Index

A B C D E F G H I J K L M N O P Q R S T U V W
All Classes and Interfaces|All Packages|Constant Field Values|Serialized Form

A

ABSOLUTE_DIRECTORY_PATH - Static variable in interface dev.langchain4j.data.document.Document

Common metadata key for the absolute path of the directory from which the document was loaded.

add(Embedding) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Adds a given embedding to the store.

add(Embedding, Embedded) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Adds a given embedding and the corresponding content that has been embedded to the store.

add(ChatMessage) - Method in interface dev.langchain4j.memory.ChatMemory

Adds a message to the chat memory.

add(TokenUsage) - Method in class dev.langchain4j.model.output.TokenUsage

Adds the token usage of two responses together.

add(String, Embedding) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Adds a given embedding to the store.

addAll(List<Embedding>) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Adds multiple embeddings to the store.

addAll(List<Embedding>, List<Embedded>) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Adds multiple embeddings and their corresponding contents that have been embedded to the store.

addAll(List<String>, List<Embedding>, List<Embedded>) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Adds multiple embeddings and their corresponding contents that have been embedded to the store.

addBooleanProperty(String) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds a single boolean property to the properties of this JSON object.

addBooleanProperty(String, String) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds a single boolean property with a description to the properties of this JSON object.

addContent(Content) - Method in class dev.langchain4j.data.message.UserMessage.Builder

addEnumProperty(String, List<String>) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds a single enum property to the properties of this JSON object.

addEnumProperty(String, List<String>, String) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds a single enum property with a description to the properties of this JSON object.

addIntegerProperty(String) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds a single integer property to the properties of this JSON object.

addIntegerProperty(String, String) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds a single integer property with a description to the properties of this JSON object.

additionalParams() - Method in class dev.langchain4j.web.search.WebSearchRequest

Get the additional parameters for the search request.

additionalParams(Map<String, Object>) - Method in class dev.langchain4j.web.search.WebSearchRequest.Builder

Set the additional parameters for the search request.

additionalProperties() - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema

additionalProperties(Boolean) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

addNumberProperty(String) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds a single number property to the properties of this JSON object.

addNumberProperty(String, String) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds a single number property with a description to the properties of this JSON object.

addProperties(Map<String, JsonSchemaElement>) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds all properties in the parameter Map to the properties of this JSON object.

addProperty(String, JsonSchemaElement) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds a single property to the properties of this JSON object.

addStringProperty(String) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds a single string property to the properties of this JSON object.

addStringProperty(String, String) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Adds a single string property with a description to the properties of this JSON object.

aggregate(Map<Query, Collection<List<Content>>>) - Method in interface dev.langchain4j.rag.content.aggregator.ContentAggregator

Aggregates all Contents retrieved by all ContentRetrievers using all Querys.

aggregate(Map<Query, Collection<List<Content>>>) - Method in class dev.langchain4j.rag.content.aggregator.DefaultContentAggregator

aggregate(Map<Query, Collection<List<Content>>>) - Method in class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator

AI - Enum constant in enum class dev.langchain4j.data.message.ChatMessageType

A message from the AI.

aiMessage() - Method in class dev.langchain4j.model.chat.response.ChatResponse

aiMessage(ToolExecutionRequest...) - Static method in class dev.langchain4j.data.message.AiMessage

Create a new AiMessage with the given tool execution requests.

aiMessage(AiMessage) - Method in class dev.langchain4j.model.chat.response.ChatResponse.Builder

aiMessage(String) - Static method in class dev.langchain4j.data.message.AiMessage

Create a new AiMessage with the given text.

aiMessage(String, List<ToolExecutionRequest>) - Static method in class dev.langchain4j.data.message.AiMessage

Create a new AiMessage with the given text and tool execution requests.

aiMessage(List<ToolExecutionRequest>) - Static method in class dev.langchain4j.data.message.AiMessage

Create a new AiMessage with the given tool execution requests.

AiMessage - Class in dev.langchain4j.data.message

Represents a response message from an AI (language model).

AiMessage(String) - Constructor for class dev.langchain4j.data.message.AiMessage

Create a new AiMessage with the given text.

AiMessage(String, List<ToolExecutionRequest>) - Constructor for class dev.langchain4j.data.message.AiMessage

Create a new AiMessage with the given text and tool execution requests.

AiMessage(List<ToolExecutionRequest>) - Constructor for class dev.langchain4j.data.message.AiMessage

Create a new AiMessage with the given tool execution requests.

AiMessage.Builder - Class in dev.langchain4j.data.message

AMAZON_BEDROCK - Enum constant in enum class dev.langchain4j.model.ModelProvider

and(Filter) - Method in interface dev.langchain4j.store.embedding.filter.Filter

and(Filter, Filter) - Static method in interface dev.langchain4j.store.embedding.filter.Filter

And - Class in dev.langchain4j.store.embedding.filter.logical

And(Filter, Filter) - Constructor for class dev.langchain4j.store.embedding.filter.logical.And

ANTHROPIC - Enum constant in enum class dev.langchain4j.model.ModelProvider

anyOf() - Method in class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema

anyOf(JsonSchemaElement...) - Method in class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema.Builder

anyOf(List<JsonSchemaElement>) - Method in class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema.Builder

apply(Object) - Method in class dev.langchain4j.model.input.PromptTemplate

Applies a value to a template containing a single variable.

apply(Map<String, Object>) - Method in class dev.langchain4j.model.input.PromptTemplate

Applies multiple values to a template containing multiple variables.

areNotNullOrBlank(String...) - Static method in class dev.langchain4j.internal.Utils

Are all the given strings not null and not blank?

arguments() - Method in class dev.langchain4j.agent.tool.ToolExecutionRequest

Returns the arguments of the tool.

arguments(String) - Method in class dev.langchain4j.agent.tool.ToolExecutionRequest.Builder

Sets the arguments.

attributes() - Method in class dev.langchain4j.data.message.CustomMessage

Returns the message attributes.

attributes() - Method in class dev.langchain4j.model.chat.listener.ChatModelErrorContext

attributes() - Method in class dev.langchain4j.model.chat.listener.ChatModelRequestContext

attributes() - Method in class dev.langchain4j.model.chat.listener.ChatModelResponseContext

audio() - Method in class dev.langchain4j.data.message.AudioContent

Get the Audio.

Audio - Class in dev.langchain4j.data.audio

AUDIO - Enum constant in enum class dev.langchain4j.data.message.ContentType

Audio content.

Audio.Builder - Class in dev.langchain4j.data.audio

Builder for Audio.

AudioContent - Class in dev.langchain4j.data.message

AudioContent(Audio) - Constructor for class dev.langchain4j.data.message.AudioContent

Create a new AudioContent from the given Audio.

AudioContent(String) - Constructor for class dev.langchain4j.data.message.AudioContent

Create a new AudioContent from the given url.

AudioContent(String, String) - Constructor for class dev.langchain4j.data.message.AudioContent

Create a new AudioContent from the given base64 data and mime type.

AudioContent(URI) - Constructor for class dev.langchain4j.data.message.AudioContent

Create a new AudioContent from the given url.

augment(AugmentationRequest) - Method in class dev.langchain4j.rag.DefaultRetrievalAugmentor

augment(AugmentationRequest) - Method in interface dev.langchain4j.rag.RetrievalAugmentor

Augments the ChatMessage provided in the AugmentationRequest with retrieved Contents.

AugmentationRequest - Class in dev.langchain4j.rag

Represents a request for ChatMessage augmentation.

AugmentationRequest(ChatMessage, Metadata) - Constructor for class dev.langchain4j.rag.AugmentationRequest

AugmentationResult - Class in dev.langchain4j.rag

Represents the result of a ChatMessage augmentation.

AugmentationResult(ChatMessage, List<Content>) - Constructor for class dev.langchain4j.rag.AugmentationResult

AugmentationResult.AugmentationResultBuilder - Class in dev.langchain4j.rag

AuthenticationException - Exception Class in dev.langchain4j.exception

AuthenticationException(String) - Constructor for exception class dev.langchain4j.exception.AuthenticationException

AuthenticationException(String, Throwable) - Constructor for exception class dev.langchain4j.exception.AuthenticationException

AuthenticationException(Throwable) - Constructor for exception class dev.langchain4j.exception.AuthenticationException

AUTO - Enum constant in enum class dev.langchain4j.data.message.ImageContent.DetailLevel

Auto detail.

AUTO - Enum constant in enum class dev.langchain4j.model.chat.request.ToolChoice

The chat model can choose whether to use tools, which ones to use, and how many.

AZURE_OPEN_AI - Enum constant in enum class dev.langchain4j.model.ModelProvider

B

backoffExp(double) - Method in class dev.langchain4j.internal.RetryUtils.RetryPolicy.Builder

Sets the backoff exponent.

base64Data() - Method in class dev.langchain4j.data.audio.Audio

Get the base64 data of the audio.

base64Data() - Method in class dev.langchain4j.data.image.Image

Get the base64 data of the image.

base64Data() - Method in class dev.langchain4j.data.pdf.PdfFile

Get the base64 data of the rich format document.

base64Data() - Method in class dev.langchain4j.data.video.Video

Get the base64 data of the video.

base64Data(String) - Method in class dev.langchain4j.data.audio.Audio.Builder

Set the base64 data of the audio.

base64Data(String) - Method in class dev.langchain4j.data.image.Image.Builder

Set the base64 data of the image.

base64Data(String) - Method in class dev.langchain4j.data.pdf.PdfFile.Builder

Set the base64 data of the PDF document.

base64Data(String) - Method in class dev.langchain4j.data.video.Video.Builder

Set the base64 data of the video.

between(Embedding, Embedding) - Static method in class dev.langchain4j.store.embedding.CosineSimilarity

Calculates cosine similarity between two vectors.

BlankDocumentException - Exception Class in dev.langchain4j.data.document

BlankDocumentException() - Constructor for exception class dev.langchain4j.data.document.BlankDocumentException

build() - Method in class dev.langchain4j.agent.tool.ToolExecutionRequest.Builder

Returns a ToolExecutionRequest built from the parameters previously set.

build() - Method in class dev.langchain4j.agent.tool.ToolSpecification.Builder

Returns a ToolSpecification built from the parameters previously set.

build() - Method in class dev.langchain4j.data.audio.Audio.Builder

Build the Audio.

build() - Method in class dev.langchain4j.data.image.Image.Builder

Build the Image.

build() - Method in class dev.langchain4j.data.message.AiMessage.Builder

build() - Method in class dev.langchain4j.data.message.UserMessage.Builder

build() - Method in class dev.langchain4j.data.pdf.PdfFile.Builder

Build the PdfFile.

build() - Method in class dev.langchain4j.data.video.Video.Builder

Build the Video.

build() - Method in class dev.langchain4j.internal.RetryUtils.RetryPolicy.Builder

Builds a RetryPolicy.

build() - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

build() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

build() - Method in class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema.Builder

build() - Method in class dev.langchain4j.model.chat.request.json.JsonArraySchema.Builder

build() - Method in class dev.langchain4j.model.chat.request.json.JsonBooleanSchema.Builder

build() - Method in class dev.langchain4j.model.chat.request.json.JsonEnumSchema.Builder

build() - Method in class dev.langchain4j.model.chat.request.json.JsonIntegerSchema.Builder

build() - Method in class dev.langchain4j.model.chat.request.json.JsonNumberSchema.Builder

build() - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

build() - Method in class dev.langchain4j.model.chat.request.json.JsonReferenceSchema.Builder

build() - Method in class dev.langchain4j.model.chat.request.json.JsonSchema.Builder

build() - Method in class dev.langchain4j.model.chat.request.json.JsonStringSchema.Builder

build() - Method in class dev.langchain4j.model.chat.request.ResponseFormat.Builder

build() - Method in class dev.langchain4j.model.chat.response.ChatResponse.Builder

build() - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata.Builder

build() - Method in class dev.langchain4j.rag.AugmentationResult.AugmentationResultBuilder

build() - Method in class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator.ReRankingContentAggregatorBuilder

build() - Method in class dev.langchain4j.rag.content.injector.DefaultContentInjector.DefaultContentInjectorBuilder

build() - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever.EmbeddingStoreContentRetrieverBuilder

build() - Method in class dev.langchain4j.rag.content.retriever.WebSearchContentRetriever.WebSearchContentRetrieverBuilder

build() - Method in class dev.langchain4j.rag.DefaultRetrievalAugmentor.DefaultRetrievalAugmentorBuilder

build() - Method in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter.LanguageModelQueryRouterBuilder

build() - Method in class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer.CompressingQueryTransformerBuilder

build() - Method in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer.ExpandingQueryTransformerBuilder

build() - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest.EmbeddingSearchRequestBuilder

build() - Method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor.Builder

Builds the EmbeddingStoreIngestor.

build() - Method in class dev.langchain4j.web.search.WebSearchRequest.Builder

Build the web search request.

builder() - Static method in class dev.langchain4j.agent.tool.ToolExecutionRequest

Creates builder to build ToolExecutionRequest.

builder() - Static method in class dev.langchain4j.agent.tool.ToolSpecification

Creates builder to build ToolSpecification.

builder() - Static method in class dev.langchain4j.data.audio.Audio

Create a new Audio.Builder.

builder() - Static method in class dev.langchain4j.data.image.Image

Create a new Image.Builder.

builder() - Static method in class dev.langchain4j.data.message.AiMessage

builder() - Static method in class dev.langchain4j.data.message.UserMessage

builder() - Static method in class dev.langchain4j.data.pdf.PdfFile

Create a new PdfFile.Builder.

builder() - Static method in class dev.langchain4j.data.video.Video

Create a new Video.Builder.

builder() - Static method in class dev.langchain4j.model.chat.request.ChatRequest

builder() - Static method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

builder() - Static method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

builder() - Static method in class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema

builder() - Static method in class dev.langchain4j.model.chat.request.json.JsonArraySchema

builder() - Static method in class dev.langchain4j.model.chat.request.json.JsonBooleanSchema

builder() - Static method in class dev.langchain4j.model.chat.request.json.JsonEnumSchema

builder() - Static method in class dev.langchain4j.model.chat.request.json.JsonIntegerSchema

builder() - Static method in class dev.langchain4j.model.chat.request.json.JsonNumberSchema

builder() - Static method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema

builder() - Static method in class dev.langchain4j.model.chat.request.json.JsonReferenceSchema

builder() - Static method in class dev.langchain4j.model.chat.request.json.JsonSchema

builder() - Static method in class dev.langchain4j.model.chat.request.json.JsonStringSchema

builder() - Static method in class dev.langchain4j.model.chat.request.ResponseFormat

builder() - Static method in class dev.langchain4j.model.chat.response.ChatResponse

builder() - Static method in class dev.langchain4j.model.chat.response.ChatResponseMetadata

builder() - Static method in class dev.langchain4j.rag.AugmentationResult

builder() - Static method in class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator

builder() - Static method in class dev.langchain4j.rag.content.injector.DefaultContentInjector

builder() - Static method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever

builder() - Static method in class dev.langchain4j.rag.content.retriever.WebSearchContentRetriever

builder() - Static method in class dev.langchain4j.rag.DefaultRetrievalAugmentor

builder() - Static method in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

builder() - Static method in class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer

builder() - Static method in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

builder() - Static method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest

builder() - Static method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor

Creates a new EmbeddingStoreIngestor builder.

builder() - Static method in class dev.langchain4j.web.search.WebSearchRequest

Create a new builder instance.

Builder() - Constructor for class dev.langchain4j.data.audio.Audio.Builder

Create a new Audio.Builder.

Builder() - Constructor for class dev.langchain4j.data.image.Image.Builder

Create a new Image.Builder.

Builder() - Constructor for class dev.langchain4j.data.message.AiMessage.Builder

Builder() - Constructor for class dev.langchain4j.data.message.UserMessage.Builder

Builder() - Constructor for class dev.langchain4j.data.pdf.PdfFile.Builder

Create a new PdfFile.Builder.

Builder() - Constructor for class dev.langchain4j.data.video.Video.Builder

Create a new Video.Builder.

Builder() - Constructor for class dev.langchain4j.internal.RetryUtils.RetryPolicy.Builder

Construct a RetryPolicy.Builder.

Builder() - Constructor for class dev.langchain4j.model.chat.request.ChatRequest.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.json.JsonArraySchema.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.json.JsonBooleanSchema.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.json.JsonEnumSchema.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.json.JsonIntegerSchema.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.json.JsonNumberSchema.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.json.JsonReferenceSchema.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.json.JsonSchema.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.json.JsonStringSchema.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.request.ResponseFormat.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.response.ChatResponse.Builder

Builder() - Constructor for class dev.langchain4j.model.chat.response.ChatResponseMetadata.Builder

Builder() - Constructor for class dev.langchain4j.store.embedding.EmbeddingStoreIngestor.Builder

Creates a new EmbeddingStoreIngestor builder.

C

Capability - Enum Class in dev.langchain4j.model.chat

Represents a capability of a ChatModel or StreamingChatModel.

chat(ChatMessage...) - Method in interface dev.langchain4j.model.chat.ChatModel

chat(ChatRequest) - Method in interface dev.langchain4j.model.chat.ChatModel

This is the main API to interact with the chat model.

chat(ChatRequest, StreamingChatResponseHandler) - Method in interface dev.langchain4j.model.chat.StreamingChatModel

This is the main API to interact with the chat model.

chat(String) - Method in interface dev.langchain4j.model.chat.ChatModel

chat(String, StreamingChatResponseHandler) - Method in interface dev.langchain4j.model.chat.StreamingChatModel

chat(List<ChatMessage>) - Method in interface dev.langchain4j.model.chat.ChatModel

chat(List<ChatMessage>, StreamingChatResponseHandler) - Method in interface dev.langchain4j.model.chat.StreamingChatModel

chatMemory() - Method in class dev.langchain4j.rag.query.Metadata

ChatMemory - Interface in dev.langchain4j.memory

Represents the memory (history) of a chat conversation.

chatMemoryId() - Method in class dev.langchain4j.rag.query.Metadata

ChatMemoryStore - Interface in dev.langchain4j.store.memory.chat

Represents a store for the ChatMemory state.

chatMessage() - Method in class dev.langchain4j.rag.AugmentationRequest

chatMessage() - Method in class dev.langchain4j.rag.AugmentationResult

chatMessage() - Method in class dev.langchain4j.rag.query.Metadata

chatMessage(ChatMessage) - Method in class dev.langchain4j.rag.AugmentationResult.AugmentationResultBuilder

ChatMessage - Interface in dev.langchain4j.data.message

Represents a chat message.

ChatMessageDeserializer - Class in dev.langchain4j.data.message

A deserializer for ChatMessage objects.

ChatMessageJsonCodec - Interface in dev.langchain4j.data.message

A codec for serializing and deserializing ChatMessage objects to and from JSON.

ChatMessageJsonCodecFactory - Interface in dev.langchain4j.spi.data.message

A factory for creating ChatMessageJsonCodec objects.

ChatMessageSerializer - Class in dev.langchain4j.data.message

ChatMessageSerializer() - Constructor for class dev.langchain4j.data.message.ChatMessageSerializer

ChatMessageType - Enum Class in dev.langchain4j.data.message

The type of content, e.g.

chatModel - Variable in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

chatModel - Variable in class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer

chatModel - Variable in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

chatModel(ChatModel) - Method in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter.LanguageModelQueryRouterBuilder

chatModel(ChatModel) - Method in class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer.CompressingQueryTransformerBuilder

chatModel(ChatModel) - Method in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer.ExpandingQueryTransformerBuilder

ChatModel - Interface in dev.langchain4j.model.chat

Represents a language model that has a chat API.

ChatModelErrorContext - Class in dev.langchain4j.model.chat.listener

The chat model error context.

ChatModelErrorContext(Throwable, ChatRequest, ModelProvider, Map<Object, Object>) - Constructor for class dev.langchain4j.model.chat.listener.ChatModelErrorContext

ChatModelListener - Interface in dev.langchain4j.model.chat.listener

A ChatModel listener that listens for requests, responses and errors.

ChatModelRequestContext - Class in dev.langchain4j.model.chat.listener

The chat model request context.

ChatModelRequestContext(ChatRequest, ModelProvider, Map<Object, Object>) - Constructor for class dev.langchain4j.model.chat.listener.ChatModelRequestContext

ChatModelResponseContext - Class in dev.langchain4j.model.chat.listener

The chat response context.

ChatModelResponseContext(ChatResponse, ChatRequest, ModelProvider, Map<Object, Object>) - Constructor for class dev.langchain4j.model.chat.listener.ChatModelResponseContext

chatRequest() - Method in class dev.langchain4j.model.chat.listener.ChatModelErrorContext

chatRequest() - Method in class dev.langchain4j.model.chat.listener.ChatModelRequestContext

chatRequest() - Method in class dev.langchain4j.model.chat.listener.ChatModelResponseContext

ChatRequest - Class in dev.langchain4j.model.chat.request

ChatRequest(ChatRequest.Builder) - Constructor for class dev.langchain4j.model.chat.request.ChatRequest

ChatRequest.Builder - Class in dev.langchain4j.model.chat.request

ChatRequestParameters - Interface in dev.langchain4j.model.chat.request

Represents common chat request parameters supported by most LLM providers.

ChatRequestValidationUtils - Class in dev.langchain4j.internal

ChatRequestValidationUtils() - Constructor for class dev.langchain4j.internal.ChatRequestValidationUtils

chatResponse() - Method in class dev.langchain4j.model.chat.listener.ChatModelResponseContext

ChatResponse - Class in dev.langchain4j.model.chat.response

ChatResponse(ChatResponse.Builder) - Constructor for class dev.langchain4j.model.chat.response.ChatResponse

ChatResponse.Builder - Class in dev.langchain4j.model.chat.response

ChatResponseMetadata - Class in dev.langchain4j.model.chat.response

Represents common chat response metadata supported by most LLM providers.

ChatResponseMetadata(ChatResponseMetadata.Builder<?>) - Constructor for class dev.langchain4j.model.chat.response.ChatResponseMetadata

ChatResponseMetadata.Builder<T> - Class in dev.langchain4j.model.chat.response

clear() - Method in interface dev.langchain4j.memory.ChatMemory

Clears the chat memory.

CodeExecutionEngine - Interface in dev.langchain4j.code

Interface for executing code.

comparisonValue() - Method in class dev.langchain4j.store.embedding.filter.comparison.ContainsString

comparisonValue() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsEqualTo

comparisonValue() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThan

comparisonValue() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThanOrEqualTo

comparisonValue() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThan

comparisonValue() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThanOrEqualTo

comparisonValue() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotEqualTo

comparisonValues() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsIn

comparisonValues() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotIn

CompressingQueryTransformer - Class in dev.langchain4j.rag.query.transformer

A QueryTransformer that leverages a ChatModel to condense a given Query along with a chat memory (previous conversation history) into a concise Query.

CompressingQueryTransformer(ChatModel) - Constructor for class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer

CompressingQueryTransformer(ChatModel, PromptTemplate) - Constructor for class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer

CompressingQueryTransformer.CompressingQueryTransformerBuilder - Class in dev.langchain4j.rag.query.transformer

containsKey(String) - Method in class dev.langchain4j.data.document.Metadata

Check whether this Metadata contains a given key.

containsString(String) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

ContainsString - Class in dev.langchain4j.store.embedding.filter.comparison

A filter that checks if the value of a metadata key contains a specific string.

ContainsString(String, String) - Constructor for class dev.langchain4j.store.embedding.filter.comparison.ContainsString

content() - Method in class dev.langchain4j.model.output.Response

Get the content.

content() - Method in class dev.langchain4j.web.search.WebSearchOrganicResult

Returns the content scraped from the web page.

Content - Interface in dev.langchain4j.data.message

Abstract base interface for message content.

Content - Interface in dev.langchain4j.rag.content

Represents content relevant to a user Query with the potential to enhance and ground the LLM's response.

CONTENT_FILTER - Enum constant in enum class dev.langchain4j.model.output.FinishReason

The call finished signalling a need for content filtering.

contentAggregator(ContentAggregator) - Method in class dev.langchain4j.rag.DefaultRetrievalAugmentor.DefaultRetrievalAugmentorBuilder

ContentAggregator - Interface in dev.langchain4j.rag.content.aggregator

Aggregates all Contents retrieved from all ContentRetrievers using all Querys.

contentInjector(ContentInjector) - Method in class dev.langchain4j.rag.DefaultRetrievalAugmentor.DefaultRetrievalAugmentorBuilder

ContentInjector - Interface in dev.langchain4j.rag.content.injector

Injects given Contents into a given UserMessage.

ContentMetadata - Enum Class in dev.langchain4j.rag.content

contentRetriever(ContentRetriever) - Method in class dev.langchain4j.rag.DefaultRetrievalAugmentor.DefaultRetrievalAugmentorBuilder

ContentRetriever - Interface in dev.langchain4j.rag.content.retriever

Retrieves Contents from an underlying data source using a given Query.

contents() - Method in class dev.langchain4j.data.message.UserMessage

The Contents of the message.

contents() - Method in class dev.langchain4j.rag.AugmentationResult

contents(List<Content>) - Method in class dev.langchain4j.data.message.UserMessage.Builder

contents(List<Content>) - Method in class dev.langchain4j.rag.AugmentationResult.AugmentationResultBuilder

ContentType - Enum Class in dev.langchain4j.data.message

The type of content, e.g.

copy() - Method in class dev.langchain4j.data.document.Metadata

Copies the metadata.

copy(List<T>) - Static method in class dev.langchain4j.internal.Utils

Returns an (unmodifiable) copy of the provided list.

copy(Map<K, V>) - Static method in class dev.langchain4j.internal.Utils

Returns an (unmodifiable) copy of the provided map.

copy(Set<T>) - Static method in class dev.langchain4j.internal.Utils

Returns an (unmodifiable) copy of the provided set.

copyIfNotNull(List<T>) - Static method in class dev.langchain4j.internal.Utils

Returns an (unmodifiable) copy of the provided list.

copyIfNotNull(Map<K, V>) - Static method in class dev.langchain4j.internal.Utils

Returns an (unmodifiable) copy of the provided map.

copyIfNotNull(Set<T>) - Static method in class dev.langchain4j.internal.Utils

Returns an (unmodifiable) copy of the provided set.

CosineSimilarity - Class in dev.langchain4j.store.embedding

Utility class for calculating cosine similarity between two vectors.

create() - Method in interface dev.langchain4j.spi.data.document.parser.DocumentParserFactory

create() - Method in interface dev.langchain4j.spi.data.document.splitter.DocumentSplitterFactory

create() - Method in interface dev.langchain4j.spi.data.message.ChatMessageJsonCodecFactory

Creates a new ChatMessageJsonCodec object.

create() - Method in interface dev.langchain4j.spi.json.JsonCodecFactory

Create a new Json.JsonCodec.

create() - Method in interface dev.langchain4j.spi.model.embedding.EmbeddingModelFactory

create(PromptTemplateFactory.Input) - Method in interface dev.langchain4j.spi.prompt.PromptTemplateFactory

Create a new prompt template.

createPrompt(ChatMessage, List<Content>) - Method in class dev.langchain4j.rag.content.injector.DefaultContentInjector

createPrompt(Query) - Method in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

createPrompt(Query) - Method in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

createPrompt(Query, String) - Method in class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer

createVirtualThreadExecutor() - Static method in class dev.langchain4j.internal.VirtualThreadUtils

Creates a virtual thread per task executor, assuming virtual threads are supported.

createVirtualThreadExecutor(Supplier<ExecutorService>) - Static method in class dev.langchain4j.internal.VirtualThreadUtils

Creates a virtual thread per task executor using reflection.

CUSTOM - Enum constant in enum class dev.langchain4j.data.message.ChatMessageType

A custom message.

customMessage(Map<String, Object>) - Static method in class dev.langchain4j.data.message.CustomMessage

Creates a new custom message.

CustomMessage - Class in dev.langchain4j.data.message

Represents a custom message.

CustomMessage(Map<String, Object>) - Constructor for class dev.langchain4j.data.message.CustomMessage

Creates a new custom message.

CustomMimeTypesFileTypeDetector - Class in dev.langchain4j.internal

Utility class to guess the mime-type of a file from its path or URI.

CustomMimeTypesFileTypeDetector() - Constructor for class dev.langchain4j.internal.CustomMimeTypesFileTypeDetector

Create a file mime-type detector, using the internal default mappings, and fallback to JDK's built-in capabilities, when no suitable mapping is found.

CustomMimeTypesFileTypeDetector(Map<String, String>) - Constructor for class dev.langchain4j.internal.CustomMimeTypesFileTypeDetector

Create a file mime-type detector, using your own custom file extension to mime-type mappings, with a fallback to JDK's built-in capabilities, when no suitable mapping is found

D

DEFAULT - Static variable in interface dev.langchain4j.internal.ExceptionMapper

DEFAULT_DISPLAY_NAME - Static variable in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever

DEFAULT_FILTER - Static variable in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever

DEFAULT_MAX_RESULTS - Static variable in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever

DEFAULT_MIN_SCORE - Static variable in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever

DEFAULT_N - Static variable in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

DEFAULT_PROMPT_TEMPLATE - Static variable in class dev.langchain4j.rag.content.injector.DefaultContentInjector

DEFAULT_PROMPT_TEMPLATE - Static variable in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

DEFAULT_PROMPT_TEMPLATE - Static variable in class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer

DEFAULT_PROMPT_TEMPLATE - Static variable in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

DEFAULT_QUERY_SELECTOR - Static variable in class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator

DEFAULT_RETRY_POLICY - Static variable in class dev.langchain4j.internal.RetryUtils

Default retry policy used by RetryUtils.withRetry(Callable).

DefaultChatRequestParameters - Class in dev.langchain4j.model.chat.request

DefaultChatRequestParameters(DefaultChatRequestParameters.Builder<?>) - Constructor for class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

DefaultChatRequestParameters.Builder<T> - Class in dev.langchain4j.model.chat.request

DefaultContent - Class in dev.langchain4j.rag.content

A default implementation of a Content.

DefaultContent(TextSegment) - Constructor for class dev.langchain4j.rag.content.DefaultContent

DefaultContent(TextSegment, Map<ContentMetadata, Object>) - Constructor for class dev.langchain4j.rag.content.DefaultContent

DefaultContent(String) - Constructor for class dev.langchain4j.rag.content.DefaultContent

DefaultContentAggregator - Class in dev.langchain4j.rag.content.aggregator

Default implementation of ContentAggregator intended to be suitable for the majority of use cases.

DefaultContentAggregator() - Constructor for class dev.langchain4j.rag.content.aggregator.DefaultContentAggregator

DefaultContentInjector - Class in dev.langchain4j.rag.content.injector

Default implementation of ContentInjector intended to be suitable for the majority of use cases.

DefaultContentInjector() - Constructor for class dev.langchain4j.rag.content.injector.DefaultContentInjector

DefaultContentInjector(PromptTemplate) - Constructor for class dev.langchain4j.rag.content.injector.DefaultContentInjector

DefaultContentInjector(PromptTemplate, List<String>) - Constructor for class dev.langchain4j.rag.content.injector.DefaultContentInjector

DefaultContentInjector(List<String>) - Constructor for class dev.langchain4j.rag.content.injector.DefaultContentInjector

DefaultContentInjector.DefaultContentInjectorBuilder - Class in dev.langchain4j.rag.content.injector

DefaultDocument - Class in dev.langchain4j.data.document

A default implementation of a Document.

DefaultDocument(String) - Constructor for class dev.langchain4j.data.document.DefaultDocument

DefaultDocument(String, Metadata) - Constructor for class dev.langchain4j.data.document.DefaultDocument

DefaultExceptionMapper() - Constructor for class dev.langchain4j.internal.ExceptionMapper.DefaultExceptionMapper

DefaultQueryRouter - Class in dev.langchain4j.rag.query.router

Default implementation of QueryRouter intended to be suitable for the majority of use cases.

DefaultQueryRouter(ContentRetriever...) - Constructor for class dev.langchain4j.rag.query.router.DefaultQueryRouter

DefaultQueryRouter(Collection<ContentRetriever>) - Constructor for class dev.langchain4j.rag.query.router.DefaultQueryRouter

DefaultQueryTransformer - Class in dev.langchain4j.rag.query.transformer

Default implementation of QueryTransformer intended to be suitable for the majority of use cases.

DefaultQueryTransformer() - Constructor for class dev.langchain4j.rag.query.transformer.DefaultQueryTransformer

defaultRequestParameters() - Method in interface dev.langchain4j.model.chat.ChatModel

defaultRequestParameters() - Method in interface dev.langchain4j.model.chat.StreamingChatModel

DefaultRetrievalAugmentor - Class in dev.langchain4j.rag

The default implementation of RetrievalAugmentor intended to be suitable for the majority of use cases.

DefaultRetrievalAugmentor(QueryTransformer, QueryRouter, ContentAggregator, ContentInjector, Executor) - Constructor for class dev.langchain4j.rag.DefaultRetrievalAugmentor

DefaultRetrievalAugmentor.DefaultRetrievalAugmentorBuilder - Class in dev.langchain4j.rag

definitions() - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema

Used together with JsonReferenceSchema when recursion is required.

definitions(Map<String, JsonSchemaElement>) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

Used together with JsonReferenceSchema when recursion is required.

delayMillis(int) - Method in class dev.langchain4j.internal.RetryUtils.RetryPolicy.Builder

Sets the base delay in milliseconds.

deleteMessages(Object) - Method in interface dev.langchain4j.store.memory.chat.ChatMemoryStore

Deletes all messages for a specified chat memory.

deleteMessages(Object) - Method in class dev.langchain4j.store.memory.chat.InMemoryChatMemoryStore

delimiter() - Element in annotation interface dev.langchain4j.model.input.structured.StructuredPrompt

The delimiter to join the lines of the prompt template.

description() - Method in class dev.langchain4j.agent.tool.ToolSpecification

Returns the description of the tool.

description() - Method in class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema

description() - Method in class dev.langchain4j.model.chat.request.json.JsonArraySchema

description() - Method in class dev.langchain4j.model.chat.request.json.JsonBooleanSchema

description() - Method in class dev.langchain4j.model.chat.request.json.JsonEnumSchema

description() - Method in class dev.langchain4j.model.chat.request.json.JsonIntegerSchema

description() - Method in class dev.langchain4j.model.chat.request.json.JsonNullSchema

description() - Method in class dev.langchain4j.model.chat.request.json.JsonNumberSchema

description() - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema

description() - Method in class dev.langchain4j.model.chat.request.json.JsonReferenceSchema

description() - Method in interface dev.langchain4j.model.chat.request.json.JsonSchemaElement

description() - Method in class dev.langchain4j.model.chat.request.json.JsonStringSchema

description(String) - Method in class dev.langchain4j.agent.tool.ToolSpecification.Builder

Sets the description.

description(String) - Method in class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema.Builder

description(String) - Method in class dev.langchain4j.model.chat.request.json.JsonArraySchema.Builder

description(String) - Method in class dev.langchain4j.model.chat.request.json.JsonBooleanSchema.Builder

description(String) - Method in class dev.langchain4j.model.chat.request.json.JsonEnumSchema.Builder

description(String) - Method in class dev.langchain4j.model.chat.request.json.JsonIntegerSchema.Builder

description(String) - Method in class dev.langchain4j.model.chat.request.json.JsonNumberSchema.Builder

description(String) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

description(String) - Method in class dev.langchain4j.model.chat.request.json.JsonStringSchema.Builder

Description - Annotation Interface in dev.langchain4j.model.output.structured

Annotation to attach a description to a class field.

detailLevel() - Method in class dev.langchain4j.data.message.ImageContent

Get the DetailLevel.

dev.langchain4j - package dev.langchain4j

dev.langchain4j.agent.tool - package dev.langchain4j.agent.tool

dev.langchain4j.code - package dev.langchain4j.code

dev.langchain4j.data.audio - package dev.langchain4j.data.audio

dev.langchain4j.data.document - package dev.langchain4j.data.document

dev.langchain4j.data.embedding - package dev.langchain4j.data.embedding

dev.langchain4j.data.image - package dev.langchain4j.data.image

dev.langchain4j.data.message - package dev.langchain4j.data.message

dev.langchain4j.data.pdf - package dev.langchain4j.data.pdf

dev.langchain4j.data.segment - package dev.langchain4j.data.segment

dev.langchain4j.data.video - package dev.langchain4j.data.video

dev.langchain4j.exception - package dev.langchain4j.exception

dev.langchain4j.internal - package dev.langchain4j.internal

dev.langchain4j.memory - package dev.langchain4j.memory

dev.langchain4j.model - package dev.langchain4j.model

dev.langchain4j.model.chat - package dev.langchain4j.model.chat

dev.langchain4j.model.chat.listener - package dev.langchain4j.model.chat.listener

dev.langchain4j.model.chat.request - package dev.langchain4j.model.chat.request

dev.langchain4j.model.chat.request.json - package dev.langchain4j.model.chat.request.json

dev.langchain4j.model.chat.response - package dev.langchain4j.model.chat.response

dev.langchain4j.model.embedding - package dev.langchain4j.model.embedding

dev.langchain4j.model.image - package dev.langchain4j.model.image

dev.langchain4j.model.input - package dev.langchain4j.model.input

dev.langchain4j.model.input.structured - package dev.langchain4j.model.input.structured

dev.langchain4j.model.language - package dev.langchain4j.model.language

dev.langchain4j.model.moderation - package dev.langchain4j.model.moderation

dev.langchain4j.model.output - package dev.langchain4j.model.output

dev.langchain4j.model.output.structured - package dev.langchain4j.model.output.structured

dev.langchain4j.model.scoring - package dev.langchain4j.model.scoring

dev.langchain4j.rag - package dev.langchain4j.rag

dev.langchain4j.rag.content - package dev.langchain4j.rag.content

dev.langchain4j.rag.content.aggregator - package dev.langchain4j.rag.content.aggregator

dev.langchain4j.rag.content.injector - package dev.langchain4j.rag.content.injector

dev.langchain4j.rag.content.retriever - package dev.langchain4j.rag.content.retriever

dev.langchain4j.rag.query - package dev.langchain4j.rag.query

dev.langchain4j.rag.query.router - package dev.langchain4j.rag.query.router

dev.langchain4j.rag.query.transformer - package dev.langchain4j.rag.query.transformer

dev.langchain4j.spi - package dev.langchain4j.spi

dev.langchain4j.spi.data.document.parser - package dev.langchain4j.spi.data.document.parser

dev.langchain4j.spi.data.document.splitter - package dev.langchain4j.spi.data.document.splitter

dev.langchain4j.spi.data.message - package dev.langchain4j.spi.data.message

dev.langchain4j.spi.json - package dev.langchain4j.spi.json

dev.langchain4j.spi.model.embedding - package dev.langchain4j.spi.model.embedding

dev.langchain4j.spi.prompt - package dev.langchain4j.spi.prompt

dev.langchain4j.spi.prompt.structured - package dev.langchain4j.spi.prompt.structured

dev.langchain4j.store.embedding - package dev.langchain4j.store.embedding

dev.langchain4j.store.embedding.filter - package dev.langchain4j.store.embedding.filter

dev.langchain4j.store.embedding.filter.comparison - package dev.langchain4j.store.embedding.filter.comparison

dev.langchain4j.store.embedding.filter.logical - package dev.langchain4j.store.embedding.filter.logical

dev.langchain4j.store.memory.chat - package dev.langchain4j.store.memory.chat

dev.langchain4j.web.search - package dev.langchain4j.web.search

dimension - Variable in class dev.langchain4j.model.embedding.DimensionAwareEmbeddingModel

dimension of embedding

dimension() - Method in class dev.langchain4j.data.embedding.Embedding

Returns the dimension of the vector.

dimension() - Method in class dev.langchain4j.model.embedding.DimensionAwareEmbeddingModel

dimension() - Method in interface dev.langchain4j.model.embedding.EmbeddingModel

Returns the dimension of the Embedding produced by this embedding model.

DimensionAwareEmbeddingModel - Class in dev.langchain4j.model.embedding

A dimension aware embedding model

DimensionAwareEmbeddingModel() - Constructor for class dev.langchain4j.model.embedding.DimensionAwareEmbeddingModel

DisabledChatModel - Class in dev.langchain4j.model.chat

A ChatModel which throws a ModelDisabledException for all of its methods

DisabledChatModel() - Constructor for class dev.langchain4j.model.chat.DisabledChatModel

DisabledEmbeddingModel - Class in dev.langchain4j.model.embedding

An EmbeddingModel which throws a ModelDisabledException for all of its methods

DisabledEmbeddingModel() - Constructor for class dev.langchain4j.model.embedding.DisabledEmbeddingModel

DisabledImageModel - Class in dev.langchain4j.model.image

An ImageModel which throws a ModelDisabledException for all of its methods

DisabledImageModel() - Constructor for class dev.langchain4j.model.image.DisabledImageModel

DisabledLanguageModel - Class in dev.langchain4j.model.language

A LanguageModel which throws a ModelDisabledException for all of its methods

DisabledLanguageModel() - Constructor for class dev.langchain4j.model.language.DisabledLanguageModel

DisabledModerationModel - Class in dev.langchain4j.model.moderation

A ModerationModel which throws a ModelDisabledException for all of its methods

DisabledModerationModel() - Constructor for class dev.langchain4j.model.moderation.DisabledModerationModel

DisabledStreamingChatModel - Class in dev.langchain4j.model.chat

A StreamingChatModel which throws a ModelDisabledException for all of its methods

DisabledStreamingChatModel() - Constructor for class dev.langchain4j.model.chat.DisabledStreamingChatModel

DisabledStreamingLanguageModel - Class in dev.langchain4j.model.language

A StreamingLanguageModel which throws a ModelDisabledException for all of its methods

DisabledStreamingLanguageModel() - Constructor for class dev.langchain4j.model.language.DisabledStreamingLanguageModel

displayName(String) - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever.EmbeddingStoreContentRetrieverBuilder

DO_NOT_ROUTE - Enum constant in enum class dev.langchain4j.rag.query.router.LanguageModelQueryRouter.FallbackStrategy

In this case, the Query will not be routed to any ContentRetriever, thus skipping the RAG flow.

doChat(ChatRequest) - Method in interface dev.langchain4j.model.chat.ChatModel

doChat(ChatRequest) - Method in class dev.langchain4j.model.chat.DisabledChatModel

doChat(ChatRequest, StreamingChatResponseHandler) - Method in class dev.langchain4j.model.chat.DisabledStreamingChatModel

doChat(ChatRequest, StreamingChatResponseHandler) - Method in interface dev.langchain4j.model.chat.StreamingChatModel

document(String) - Static method in interface dev.langchain4j.data.document.Document

Creates a new Document from the given text.

document(String, Metadata) - Static method in interface dev.langchain4j.data.document.Document

Creates a new Document from the given text.

Document - Interface in dev.langchain4j.data.document

Represents an unstructured piece of text that usually corresponds to a content of a single file.

DocumentLoader - Class in dev.langchain4j.data.document

Utility class for loading documents.

DocumentParser - Interface in dev.langchain4j.data.document

Defines the interface for parsing an InputStream into a Document.

DocumentParserFactory - Interface in dev.langchain4j.spi.data.document.parser

A factory for creating DocumentParser instances through SPI.

DocumentSource - Interface in dev.langchain4j.data.document

Defines the interface for a Document source.

documentSplitter(DocumentSplitter) - Method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor.Builder

Sets the document splitter.

DocumentSplitter - Interface in dev.langchain4j.data.document

Defines the interface for splitting a document into text segments.

DocumentSplitterFactory - Interface in dev.langchain4j.spi.data.document.splitter

A factory for creating DocumentSplitter instances through SPI.

documentTransformer(DocumentTransformer) - Method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor.Builder

Sets the document transformer.

DocumentTransformer - Interface in dev.langchain4j.data.document

Defines the interface for transforming a Document.

dynamicFilter(Function<Query, Filter>) - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever.EmbeddingStoreContentRetrieverBuilder

dynamicMaxResults(Function<Query, Integer>) - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever.EmbeddingStoreContentRetrieverBuilder

dynamicMinScore(Function<Query, Double>) - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever.EmbeddingStoreContentRetrieverBuilder

E

edit(Image, Image, String) - Method in class dev.langchain4j.model.image.DisabledImageModel

edit(Image, Image, String) - Method in interface dev.langchain4j.model.image.ImageModel

Given an existing image, edit this image following the given prompt and apply the changes only to the part of the image specified by the given mask.

edit(Image, String) - Method in class dev.langchain4j.model.image.DisabledImageModel

edit(Image, String) - Method in interface dev.langchain4j.model.image.ImageModel

Given an existing image, edit this image following the given prompt.

embed(TextSegment) - Method in class dev.langchain4j.model.embedding.DisabledEmbeddingModel

embed(TextSegment) - Method in interface dev.langchain4j.model.embedding.EmbeddingModel

Embed the text content of a TextSegment.

embed(String) - Method in class dev.langchain4j.model.embedding.DisabledEmbeddingModel

embed(String) - Method in interface dev.langchain4j.model.embedding.EmbeddingModel

Embed a text.

embedAll(List<TextSegment>) - Method in class dev.langchain4j.model.embedding.DisabledEmbeddingModel

embedAll(List<TextSegment>) - Method in interface dev.langchain4j.model.embedding.EmbeddingModel

Embeds the text content of a list of TextSegments.

embedded() - Method in class dev.langchain4j.store.embedding.EmbeddingMatch

Returns the original content that was embedded.

embedding() - Method in class dev.langchain4j.store.embedding.EmbeddingMatch

Returns the embedding that has been matched.

Embedding - Class in dev.langchain4j.data.embedding

Represents a dense vector embedding of a text.

Embedding(float[]) - Constructor for class dev.langchain4j.data.embedding.Embedding

Creates a new Embedding.

EMBEDDING_ID - Enum constant in enum class dev.langchain4j.rag.content.ContentMetadata

embeddingId() - Method in class dev.langchain4j.store.embedding.EmbeddingMatch

The ID of the embedding assigned when adding this embedding to the store.

EmbeddingMatch<Embedded> - Class in dev.langchain4j.store.embedding

Represents a matched embedding along with its relevance score (derivative of cosine distance), ID, and original embedded content.

EmbeddingMatch(Double, String, Embedding, Embedded) - Constructor for class dev.langchain4j.store.embedding.EmbeddingMatch

Creates a new instance.

embeddingModel(EmbeddingModel) - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever.EmbeddingStoreContentRetrieverBuilder

embeddingModel(EmbeddingModel) - Method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor.Builder

Sets the embedding model.

EmbeddingModel - Interface in dev.langchain4j.model.embedding

Represents a model that can convert a given text into an embedding (vector representation of the text).

EmbeddingModelFactory - Interface in dev.langchain4j.spi.model.embedding

A factory for creating EmbeddingModel instances through SPI.

EmbeddingSearchRequest - Class in dev.langchain4j.store.embedding

Represents a request to search in an EmbeddingStore.

EmbeddingSearchRequest(Embedding, Integer, Double, Filter) - Constructor for class dev.langchain4j.store.embedding.EmbeddingSearchRequest

Creates an instance of an EmbeddingSearchRequest.

EmbeddingSearchRequest.EmbeddingSearchRequestBuilder - Class in dev.langchain4j.store.embedding

EmbeddingSearchResult<Embedded> - Class in dev.langchain4j.store.embedding

Represents a result of a search in an EmbeddingStore.

EmbeddingSearchResult(List<EmbeddingMatch<Embedded>>) - Constructor for class dev.langchain4j.store.embedding.EmbeddingSearchResult

embeddingStore(EmbeddingStore<TextSegment>) - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever.EmbeddingStoreContentRetrieverBuilder

embeddingStore(EmbeddingStore<TextSegment>) - Method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor.Builder

Sets the embedding store.

EmbeddingStore<Embedded> - Interface in dev.langchain4j.store.embedding

Represents a store for embeddings, also known as a vector database.

EmbeddingStoreContentRetriever - Class in dev.langchain4j.rag.content.retriever

A ContentRetriever that retrieves from an EmbeddingStore.

EmbeddingStoreContentRetriever(EmbeddingStore<TextSegment>, EmbeddingModel) - Constructor for class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever

EmbeddingStoreContentRetriever(EmbeddingStore<TextSegment>, EmbeddingModel, int) - Constructor for class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever

EmbeddingStoreContentRetriever(EmbeddingStore<TextSegment>, EmbeddingModel, Integer, Double) - Constructor for class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever

EmbeddingStoreContentRetriever.EmbeddingStoreContentRetrieverBuilder - Class in dev.langchain4j.rag.content.retriever

EmbeddingStoreIngestor - Class in dev.langchain4j.store.embedding

The EmbeddingStoreIngestor represents an ingestion pipeline and is responsible for ingesting Documents into an EmbeddingStore.

EmbeddingStoreIngestor(DocumentTransformer, DocumentSplitter, TextSegmentTransformer, EmbeddingModel, EmbeddingStore<TextSegment>) - Constructor for class dev.langchain4j.store.embedding.EmbeddingStoreIngestor

Creates an instance of an EmbeddingStoreIngestor.

EmbeddingStoreIngestor.Builder - Class in dev.langchain4j.store.embedding

EmbeddingStoreIngestor builder.

ensureBetween(Double, double, double, String) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given Double value is in [min, max].

ensureBetween(Integer, int, int, String) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given Integer value is in [min, max].

ensureBetween(Long, long, long, String) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given Long value is in [min, max].

ensureEq(Object, Object, String, Object...) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensure that the two values are equal.

ensureGreaterThanZero(Double, String) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given expression is true.

ensureGreaterThanZero(Integer, String) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given expression is true.

ensureNotBlank(String, String) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given string is not null and not blank.

ensureNotEmpty(Map<K, V>, String) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given map is not null and not empty.

ensureNotEmpty(T[], String) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given array is not null and not empty.

ensureNotEmpty(T, String) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given collection is not null and not empty.

ensureNotNull(T, String) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given object is not null.

ensureNotNull(T, String, Object...) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given object is not null.

ensureTrailingForwardSlash(String) - Static method in class dev.langchain4j.internal.Utils

Appends a trailing '/' if the provided URL does not end with '/'

ensureTrue(boolean, String) - Static method in class dev.langchain4j.internal.ValidationUtils

Ensures that the given expression is true.

enumValues() - Method in class dev.langchain4j.model.chat.request.json.JsonEnumSchema

enumValues(String...) - Method in class dev.langchain4j.model.chat.request.json.JsonEnumSchema.Builder

enumValues(List<String>) - Method in class dev.langchain4j.model.chat.request.json.JsonEnumSchema.Builder

EPSILON - Static variable in class dev.langchain4j.store.embedding.CosineSimilarity

A small value to avoid division by zero.

equals(Object) - Method in class dev.langchain4j.agent.tool.ToolExecutionRequest

equals(Object) - Method in class dev.langchain4j.agent.tool.ToolSpecification

equals(Object) - Method in class dev.langchain4j.data.audio.Audio

equals(Object) - Method in class dev.langchain4j.data.document.DefaultDocument

equals(Object) - Method in class dev.langchain4j.data.document.Metadata

equals(Object) - Method in class dev.langchain4j.data.embedding.Embedding

equals(Object) - Method in class dev.langchain4j.data.image.Image

equals(Object) - Method in class dev.langchain4j.data.message.AiMessage

equals(Object) - Method in class dev.langchain4j.data.message.AudioContent

equals(Object) - Method in class dev.langchain4j.data.message.CustomMessage

equals(Object) - Method in class dev.langchain4j.data.message.ImageContent

equals(Object) - Method in class dev.langchain4j.data.message.PdfFileContent

equals(Object) - Method in class dev.langchain4j.data.message.SystemMessage

equals(Object) - Method in class dev.langchain4j.data.message.TextContent

equals(Object) - Method in class dev.langchain4j.data.message.ToolExecutionResultMessage

equals(Object) - Method in class dev.langchain4j.data.message.UserMessage

equals(Object) - Method in class dev.langchain4j.data.message.VideoContent

equals(Object) - Method in class dev.langchain4j.data.pdf.PdfFile

equals(Object) - Method in class dev.langchain4j.data.segment.TextSegment

equals(Object) - Method in class dev.langchain4j.data.video.Video

equals(Object) - Method in class dev.langchain4j.model.chat.request.ChatRequest

equals(Object) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

equals(Object) - Method in class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema

equals(Object) - Method in class dev.langchain4j.model.chat.request.json.JsonArraySchema

equals(Object) - Method in class dev.langchain4j.model.chat.request.json.JsonBooleanSchema

equals(Object) - Method in class dev.langchain4j.model.chat.request.json.JsonEnumSchema

equals(Object) - Method in class dev.langchain4j.model.chat.request.json.JsonIntegerSchema

equals(Object) - Method in class dev.langchain4j.model.chat.request.json.JsonNumberSchema

equals(Object) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema

equals(Object) - Method in class dev.langchain4j.model.chat.request.json.JsonReferenceSchema

equals(Object) - Method in class dev.langchain4j.model.chat.request.json.JsonSchema

equals(Object) - Method in class dev.langchain4j.model.chat.request.json.JsonStringSchema

equals(Object) - Method in class dev.langchain4j.model.chat.request.ResponseFormat

equals(Object) - Method in class dev.langchain4j.model.chat.response.ChatResponse

equals(Object) - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata

equals(Object) - Method in class dev.langchain4j.model.input.Prompt

equals(Object) - Method in class dev.langchain4j.model.moderation.Moderation

equals(Object) - Method in class dev.langchain4j.model.output.Response

equals(Object) - Method in class dev.langchain4j.model.output.TokenUsage

equals(Object) - Method in class dev.langchain4j.rag.content.DefaultContent

Compares this Content with another object for equality.

equals(Object) - Method in class dev.langchain4j.rag.query.Metadata

equals(Object) - Method in class dev.langchain4j.rag.query.Query

equals(Object) - Method in class dev.langchain4j.store.embedding.EmbeddingMatch

equals(Object) - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.ContainsString

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsEqualTo

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThan

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThanOrEqualTo

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsIn

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThan

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThanOrEqualTo

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotEqualTo

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotIn

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.logical.And

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.logical.Not

equals(Object) - Method in class dev.langchain4j.store.embedding.filter.logical.Or

equals(Object) - Method in class dev.langchain4j.web.search.WebSearchInformationResult

equals(Object) - Method in class dev.langchain4j.web.search.WebSearchOrganicResult

equals(Object) - Method in class dev.langchain4j.web.search.WebSearchRequest

equals(Object) - Method in class dev.langchain4j.web.search.WebSearchResults

error() - Method in class dev.langchain4j.model.chat.listener.ChatModelErrorContext

estimateTokenCountInMessage(ChatMessage) - Method in interface dev.langchain4j.model.TokenCountEstimator

Estimates the count of tokens in the given message.

estimateTokenCountInMessages(Iterable<ChatMessage>) - Method in interface dev.langchain4j.model.TokenCountEstimator

Estimates the count of tokens in the given messages.

estimateTokenCountInText(String) - Method in interface dev.langchain4j.model.TokenCountEstimator

Estimates the count of tokens in the given text.

ExceptionMapper - Interface in dev.langchain4j.internal

ExceptionMapper.DefaultExceptionMapper - Class in dev.langchain4j.internal

Exceptions - Class in dev.langchain4j.internal

Utility methods for creating common exceptions.

execute(String) - Method in interface dev.langchain4j.code.CodeExecutionEngine

Execute the given code.

executor(Executor) - Method in class dev.langchain4j.rag.DefaultRetrievalAugmentor.DefaultRetrievalAugmentorBuilder

ExpandingQueryTransformer - Class in dev.langchain4j.rag.query.transformer

A QueryTransformer that utilizes a ChatModel to expand a given Query.

ExpandingQueryTransformer(ChatModel) - Constructor for class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

ExpandingQueryTransformer(ChatModel, int) - Constructor for class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

ExpandingQueryTransformer(ChatModel, PromptTemplate) - Constructor for class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

ExpandingQueryTransformer(ChatModel, PromptTemplate, Integer) - Constructor for class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

ExpandingQueryTransformer.ExpandingQueryTransformerBuilder - Class in dev.langchain4j.rag.query.transformer

Experimental - Annotation Interface in dev.langchain4j

Indicates that a class/constructor/method is experimental and might change in the future.

expression() - Method in class dev.langchain4j.store.embedding.filter.logical.Not

F

FAIL - Enum constant in enum class dev.langchain4j.rag.query.router.LanguageModelQueryRouter.FallbackStrategy

In this case, an original exception will be re-thrown, and the RAG flow will fail.

fallback(Query, Exception) - Method in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

fallbackStrategy - Variable in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

fallbackStrategy(LanguageModelQueryRouter.FallbackStrategy) - Method in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter.LanguageModelQueryRouterBuilder

FILE_NAME - Static variable in interface dev.langchain4j.data.document.Document

Common metadata key for the name of the file from which the document was loaded.

filter() - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest

filter(Filter) - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever.EmbeddingStoreContentRetrieverBuilder

filter(Filter) - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest.EmbeddingSearchRequestBuilder

Filter - Interface in dev.langchain4j.store.embedding.filter

This class represents a filter that can be applied during search in an EmbeddingStore.

FilterParser - Interface in dev.langchain4j.store.embedding.filter

Parses a filter expression string into a Filter object.

finishReason() - Method in class dev.langchain4j.model.chat.response.ChatResponse

finishReason() - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata

finishReason() - Method in class dev.langchain4j.model.output.Response

Get the finish reason.

finishReason(FinishReason) - Method in class dev.langchain4j.model.chat.response.ChatResponse.Builder

finishReason(FinishReason) - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata.Builder

FinishReason - Enum Class in dev.langchain4j.model.output

The reason why a model call finished.

firstChars(String, int) - Static method in class dev.langchain4j.internal.Utils

Returns the first numberOfChars characters of the given string.

flagged() - Method in class dev.langchain4j.model.moderation.Moderation

Returns true if the text was flagged.

flagged(String) - Static method in class dev.langchain4j.model.moderation.Moderation

Constructs a Moderation object that is flagged.

flaggedText() - Method in class dev.langchain4j.model.moderation.Moderation

Returns the text that was flagged.

format(Metadata) - Method in class dev.langchain4j.rag.content.injector.DefaultContentInjector

format(ChatMessage) - Method in class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer

format(Content) - Method in class dev.langchain4j.rag.content.injector.DefaultContentInjector

format(String, String) - Method in class dev.langchain4j.rag.content.injector.DefaultContentInjector

format(List<ChatMessage>) - Method in class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer

format(List<Content>) - Method in class dev.langchain4j.rag.content.injector.DefaultContentInjector

frequencyPenalty() - Method in class dev.langchain4j.model.chat.request.ChatRequest

frequencyPenalty() - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

frequencyPenalty() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

frequencyPenalty(Double) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

frequencyPenalty(Double) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

from(float[]) - Static method in class dev.langchain4j.data.embedding.Embedding

Creates a new Embedding from the given vector.

from(T) - Static method in class dev.langchain4j.model.output.Response

Create a new Response.

from(T, TokenUsage) - Static method in class dev.langchain4j.model.output.Response

Create a new Response.

from(T, TokenUsage, FinishReason) - Static method in class dev.langchain4j.model.output.Response

Create a new Response.

from(T, TokenUsage, FinishReason, Map<String, Object>) - Static method in class dev.langchain4j.model.output.Response

Create a new Response.

from(ToolExecutionRequest...) - Static method in class dev.langchain4j.data.message.AiMessage

Create a new AiMessage with the given tool execution requests.

from(ToolExecutionRequest, String) - Static method in class dev.langchain4j.data.message.ToolExecutionResultMessage

Creates a ToolExecutionResultMessage from a ToolExecutionRequest and the result of the tool execution.

from(Audio) - Static method in class dev.langchain4j.data.message.AudioContent

Create a new AudioContent from the given Audio.

from(Image) - Static method in class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given image.

from(Image, ImageContent.DetailLevel) - Static method in class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given image.

from(ChatMessage, Object, List<ChatMessage>) - Static method in class dev.langchain4j.rag.query.Metadata

from(Content...) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from contents.

from(PdfFile) - Static method in class dev.langchain4j.data.message.PdfFileContent

Create a new PdfFileContent from the given PDF.

from(TextSegment) - Static method in interface dev.langchain4j.rag.content.Content

from(TextSegment, Map<ContentMetadata, Object>) - Static method in interface dev.langchain4j.rag.content.Content

from(Video) - Static method in class dev.langchain4j.data.message.VideoContent

Create a new VideoContent from the given video.

from(EmbeddingStore<TextSegment>) - Static method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever

Creates an instance of an EmbeddingStoreContentRetriever from the specified EmbeddingStore and EmbeddingModel found through SPI (see EmbeddingModelFactory).

from(WebSearchEngine) - Static method in class dev.langchain4j.web.search.WebSearchTool

Creates a new WebSearchTool with the specified web search engine.

from(WebSearchInformationResult, List<WebSearchOrganicResult>) - Static method in class dev.langchain4j.web.search.WebSearchResults

Creates a new instance of WebSearchResults from the specified parameters.

from(Long) - Static method in class dev.langchain4j.web.search.WebSearchInformationResult

Creates a new WebSearchInformationResult with the specified total results.

from(Long, Integer, Map<String, Object>) - Static method in class dev.langchain4j.web.search.WebSearchInformationResult

Creates a new WebSearchInformationResult with the specified total results, page number, and metadata.

from(String) - Static method in interface dev.langchain4j.data.document.Document

Creates a new Document from the given text.

from(String) - Static method in class dev.langchain4j.data.message.AiMessage

Create a new AiMessage with the given text.

from(String) - Static method in class dev.langchain4j.data.message.AudioContent

Create a new AudioContent from the given url.

from(String) - Static method in class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given url.

from(String) - Static method in class dev.langchain4j.data.message.PdfFileContent

Create a new PdfFileContent from the given url.

from(String) - Static method in class dev.langchain4j.data.message.SystemMessage

Creates a new system message.

from(String) - Static method in class dev.langchain4j.data.message.TextContent

Creates a new text content.

from(String) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from a text.

from(String) - Static method in class dev.langchain4j.data.message.VideoContent

Create a new VideoContent from the given url.

from(String) - Static method in class dev.langchain4j.data.segment.TextSegment

Creates a new text segment.

from(String) - Static method in class dev.langchain4j.model.input.Prompt

Create a new Prompt.

from(String) - Static method in class dev.langchain4j.model.input.PromptTemplate

Create a new PromptTemplate.

from(String) - Static method in interface dev.langchain4j.rag.content.Content

from(String) - Static method in class dev.langchain4j.rag.query.Query

from(String) - Static method in class dev.langchain4j.web.search.WebSearchRequest

Create a web search request with the given search terms.

from(String, Metadata) - Static method in interface dev.langchain4j.data.document.Document

Creates a new Document from the given text.

from(String, Metadata) - Static method in class dev.langchain4j.data.segment.TextSegment

Creates a new text segment.

from(String, Content...) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from a name and contents.

from(String, ImageContent.DetailLevel) - Static method in class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given url and detail level.

from(String, Metadata) - Static method in class dev.langchain4j.rag.query.Query

from(String, Integer) - Static method in class dev.langchain4j.web.search.WebSearchRequest

Create a web search request with the given search terms and maximum number of results.

from(String, String) - Static method in class dev.langchain4j.data.document.Metadata

Constructs a Metadata object from a single key-value pair.

from(String, String) - Static method in class dev.langchain4j.data.message.AudioContent

Create a new AudioContent from the given base64 data and mime type.

from(String, String) - Static method in class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given base64 data and mime type.

from(String, String) - Static method in class dev.langchain4j.data.message.PdfFileContent

Create a new PdfFileContent from the given base64 data and mime type.

from(String, String) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from a name and a text.

from(String, String) - Static method in class dev.langchain4j.data.message.VideoContent

Create a new VideoContent from the given base64 data and mime type.

from(String, String, ImageContent.DetailLevel) - Static method in class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given base64 data and mime type.

from(String, String, String) - Static method in class dev.langchain4j.data.message.ToolExecutionResultMessage

Creates a ToolExecutionResultMessage from a ToolExecutionRequest and the result of the tool execution.

from(String, URI) - Static method in class dev.langchain4j.web.search.WebSearchOrganicResult

Creates a WebSearchOrganicResult object from the given title and URL.

from(String, URI, String, String) - Static method in class dev.langchain4j.web.search.WebSearchOrganicResult

Creates a WebSearchOrganicResult object from the given title, URL, snippet and/or content.

from(String, URI, String, String, Map<String, String>) - Static method in class dev.langchain4j.web.search.WebSearchOrganicResult

Creates a WebSearchOrganicResult object from the given title, URL, snippet and/or content, and result metadata.

from(String, List<ToolExecutionRequest>) - Static method in class dev.langchain4j.data.message.AiMessage

Create a new AiMessage with the given text and tool execution requests.

from(String, List<Content>) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from a name and contents.

from(URI) - Static method in class dev.langchain4j.data.message.AudioContent

Create a new AudioContent from the given url.

from(URI) - Static method in class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given url.

from(URI) - Static method in class dev.langchain4j.data.message.PdfFileContent

Create a new PdfFileContent from the given url.

from(URI) - Static method in class dev.langchain4j.data.message.VideoContent

Create a new VideoContent from the given url.

from(URI, ImageContent.DetailLevel) - Static method in class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given url and detail level.

from(List<ToolExecutionRequest>) - Static method in class dev.langchain4j.data.message.AiMessage

Create a new AiMessage with the given tool execution requests.

from(List<Content>) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from contents.

from(List<Float>) - Static method in class dev.langchain4j.data.embedding.Embedding

Creates a new Embedding from the given vector.

from(Map<String, ?>) - Static method in class dev.langchain4j.data.document.Metadata

Constructs a Metadata object from a map of key-value pairs.

from(Map<String, Object>) - Static method in class dev.langchain4j.data.message.CustomMessage

Creates a new custom message.

from(Map<String, Object>, WebSearchInformationResult, List<WebSearchOrganicResult>) - Static method in class dev.langchain4j.web.search.WebSearchResults

Creates a new instance of WebSearchResults from the specified parameters.

fromCosineSimilarity(double) - Static method in class dev.langchain4j.store.embedding.RelevanceScore

Converts cosine similarity into relevance score.

fromJson(String, Class<T>) - Static method in class dev.langchain4j.internal.Json

Convert the given JSON string to an object of the given class.

fromJson(String, Class<T>) - Method in interface dev.langchain4j.internal.Json.JsonCodec

Convert the given JSON string to an object of the given class.

fromJson(String, Type) - Static method in class dev.langchain4j.internal.Json

Convert the given JSON string to an object of the given type.

fromJson(String, Type) - Method in interface dev.langchain4j.internal.Json.JsonCodec

Convert the given JSON string to an object of the given type.

fromRelevanceScore(double) - Static method in class dev.langchain4j.store.embedding.CosineSimilarity

Converts relevance score into cosine similarity.

fuse(Collection<List<Content>>) - Static method in class dev.langchain4j.rag.content.aggregator.ReciprocalRankFuser

Fuses multiple List<Content> into a single List<Content> using the Reciprocal Rank Fusion (RRF) algorithm with k=60.

fuse(Collection<List<Content>>, int) - Static method in class dev.langchain4j.rag.content.aggregator.ReciprocalRankFuser

Fuses multiple List<Content> into a single List<Content> using the Reciprocal Rank Fusion (RRF) algorithm.

fuse(Map<Query, Collection<List<Content>>>) - Method in class dev.langchain4j.rag.content.aggregator.DefaultContentAggregator

fuse(Map<Query, Collection<List<Content>>>) - Method in class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator

G

generate(Prompt) - Method in class dev.langchain4j.model.language.DisabledLanguageModel

generate(Prompt) - Method in interface dev.langchain4j.model.language.LanguageModel

Generate a response to the given prompt.

generate(Prompt, StreamingResponseHandler<String>) - Method in class dev.langchain4j.model.language.DisabledStreamingLanguageModel

generate(Prompt, StreamingResponseHandler<String>) - Method in interface dev.langchain4j.model.language.StreamingLanguageModel

Generates a response from the model based on a prompt.

generate(String) - Method in class dev.langchain4j.model.image.DisabledImageModel

generate(String) - Method in interface dev.langchain4j.model.image.ImageModel

Given a prompt, generate an image.

generate(String) - Method in class dev.langchain4j.model.language.DisabledLanguageModel

generate(String) - Method in interface dev.langchain4j.model.language.LanguageModel

Generate a response to the given prompt.

generate(String, int) - Method in class dev.langchain4j.model.image.DisabledImageModel

generate(String, int) - Method in interface dev.langchain4j.model.image.ImageModel

Given a prompt, generate n images.

generate(String, StreamingResponseHandler<String>) - Method in class dev.langchain4j.model.language.DisabledStreamingLanguageModel

generate(String, StreamingResponseHandler<String>) - Method in interface dev.langchain4j.model.language.StreamingLanguageModel

Generates a response from the model based on a prompt.

generateIds(int) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Generates list of UUID strings

generateUUIDFrom(String) - Static method in class dev.langchain4j.internal.Utils

Generates a UUID from a hash of the given input string.

geoLocation() - Method in class dev.langchain4j.web.search.WebSearchRequest

Get the desired geolocation for search results.

geoLocation(String) - Method in class dev.langchain4j.web.search.WebSearchRequest.Builder

Set the desired geolocation for search results.

getContentClass() - Method in enum class dev.langchain4j.data.message.ContentType

Returns the class of the content type.

getDouble(String) - Method in class dev.langchain4j.data.document.Metadata

Returns the Double value associated with the given key.

getFloat(String) - Method in class dev.langchain4j.data.document.Metadata

Returns the Float value associated with the given key.

getInteger(String) - Method in class dev.langchain4j.data.document.Metadata

Returns the Integer value associated with the given key.

getLong(String) - Method in class dev.langchain4j.data.document.Metadata

Returns the Long value associated with the given key.

getMessages(Object) - Method in interface dev.langchain4j.store.memory.chat.ChatMemoryStore

Retrieves messages for a specified chat memory.

getMessages(Object) - Method in class dev.langchain4j.store.memory.chat.InMemoryChatMemoryStore

getName() - Method in interface dev.langchain4j.spi.prompt.PromptTemplateFactory.Input

Get the name of the template.

getOrDefault(List<T>, List<T>) - Static method in class dev.langchain4j.internal.Utils

Returns the given list if it is not null and not empty, otherwise returns the given default list.

getOrDefault(Map<K, V>, Map<K, V>) - Static method in class dev.langchain4j.internal.Utils

Returns the given map if it is not null and not empty, otherwise returns the given default map.

getOrDefault(T, Supplier<T>) - Static method in class dev.langchain4j.internal.Utils

Returns the given value if it is not null, otherwise returns the value returned by the given supplier.

getOrDefault(T, T) - Static method in class dev.langchain4j.internal.Utils

Returns the given value if it is not null, otherwise returns the given default value.

getString(String) - Method in class dev.langchain4j.data.document.Metadata

Returns the String value associated with the given key.

getTemplate() - Method in interface dev.langchain4j.spi.prompt.PromptTemplateFactory.Input

Get the template string.

getUUID(String) - Method in class dev.langchain4j.data.document.Metadata

Returns the UUID value associated with the given key.

GITHUB_MODELS - Enum constant in enum class dev.langchain4j.model.ModelProvider

GOOGLE_AI_GEMINI - Enum constant in enum class dev.langchain4j.model.ModelProvider

GOOGLE_VERTEX_AI_GEMINI - Enum constant in enum class dev.langchain4j.model.ModelProvider

H

hashCode() - Method in class dev.langchain4j.agent.tool.ToolExecutionRequest

hashCode() - Method in class dev.langchain4j.agent.tool.ToolSpecification

hashCode() - Method in class dev.langchain4j.data.audio.Audio

hashCode() - Method in class dev.langchain4j.data.document.DefaultDocument

hashCode() - Method in class dev.langchain4j.data.document.Metadata

hashCode() - Method in class dev.langchain4j.data.embedding.Embedding

hashCode() - Method in class dev.langchain4j.data.image.Image

hashCode() - Method in class dev.langchain4j.data.message.AiMessage

hashCode() - Method in class dev.langchain4j.data.message.AudioContent

hashCode() - Method in class dev.langchain4j.data.message.CustomMessage

hashCode() - Method in class dev.langchain4j.data.message.ImageContent

hashCode() - Method in class dev.langchain4j.data.message.PdfFileContent

hashCode() - Method in class dev.langchain4j.data.message.SystemMessage

hashCode() - Method in class dev.langchain4j.data.message.TextContent

hashCode() - Method in class dev.langchain4j.data.message.ToolExecutionResultMessage

hashCode() - Method in class dev.langchain4j.data.message.UserMessage

hashCode() - Method in class dev.langchain4j.data.message.VideoContent

hashCode() - Method in class dev.langchain4j.data.pdf.PdfFile

hashCode() - Method in class dev.langchain4j.data.segment.TextSegment

hashCode() - Method in class dev.langchain4j.data.video.Video

hashCode() - Method in class dev.langchain4j.model.chat.request.ChatRequest

hashCode() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

hashCode() - Method in class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema

hashCode() - Method in class dev.langchain4j.model.chat.request.json.JsonArraySchema

hashCode() - Method in class dev.langchain4j.model.chat.request.json.JsonBooleanSchema

hashCode() - Method in class dev.langchain4j.model.chat.request.json.JsonEnumSchema

hashCode() - Method in class dev.langchain4j.model.chat.request.json.JsonIntegerSchema

hashCode() - Method in class dev.langchain4j.model.chat.request.json.JsonNumberSchema

hashCode() - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema

hashCode() - Method in class dev.langchain4j.model.chat.request.json.JsonReferenceSchema

hashCode() - Method in class dev.langchain4j.model.chat.request.json.JsonSchema

hashCode() - Method in class dev.langchain4j.model.chat.request.json.JsonStringSchema

hashCode() - Method in class dev.langchain4j.model.chat.request.ResponseFormat

hashCode() - Method in class dev.langchain4j.model.chat.response.ChatResponse

hashCode() - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata

hashCode() - Method in class dev.langchain4j.model.input.Prompt

hashCode() - Method in class dev.langchain4j.model.moderation.Moderation

hashCode() - Method in class dev.langchain4j.model.output.Response

hashCode() - Method in class dev.langchain4j.model.output.TokenUsage

hashCode() - Method in class dev.langchain4j.rag.content.DefaultContent

Computes the hash code for this Content.

hashCode() - Method in class dev.langchain4j.rag.query.Metadata

hashCode() - Method in class dev.langchain4j.rag.query.Query

hashCode() - Method in class dev.langchain4j.store.embedding.EmbeddingMatch

hashCode() - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest

hashCode() - Method in class dev.langchain4j.store.embedding.filter.comparison.ContainsString

hashCode() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsEqualTo

hashCode() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThan

hashCode() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThanOrEqualTo

hashCode() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsIn

hashCode() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThan

hashCode() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThanOrEqualTo

hashCode() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotEqualTo

hashCode() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotIn

hashCode() - Method in class dev.langchain4j.store.embedding.filter.logical.And

hashCode() - Method in class dev.langchain4j.store.embedding.filter.logical.Not

hashCode() - Method in class dev.langchain4j.store.embedding.filter.logical.Or

hashCode() - Method in class dev.langchain4j.web.search.WebSearchInformationResult

hashCode() - Method in class dev.langchain4j.web.search.WebSearchOrganicResult

hashCode() - Method in class dev.langchain4j.web.search.WebSearchRequest

hashCode() - Method in class dev.langchain4j.web.search.WebSearchResults

hasSingleText() - Method in class dev.langchain4j.data.message.UserMessage

Whether this message contains a single TextContent.

hasToolExecutionRequests() - Method in class dev.langchain4j.data.message.AiMessage

Check if the message has ToolExecutionRequests.

HIGH - Enum constant in enum class dev.langchain4j.data.message.ImageContent.DetailLevel

High detail.

HttpException - Exception Class in dev.langchain4j.exception

HttpException(int, String) - Constructor for exception class dev.langchain4j.exception.HttpException

I

id() - Method in class dev.langchain4j.agent.tool.ToolExecutionRequest

Returns the id of the tool.

id() - Method in class dev.langchain4j.data.message.ToolExecutionResultMessage

Returns the id of the tool.

id() - Method in interface dev.langchain4j.memory.ChatMemory

The ID of the ChatMemory.

id() - Method in class dev.langchain4j.model.chat.response.ChatResponse

id() - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata

id(String) - Method in class dev.langchain4j.agent.tool.ToolExecutionRequest.Builder

Sets the id.

id(String) - Method in class dev.langchain4j.model.chat.response.ChatResponse.Builder

id(String) - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata.Builder

idToRetriever - Variable in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

illegalArgument(String, Object...) - Static method in class dev.langchain4j.internal.Exceptions

Constructs an IllegalArgumentException with the given formatted result.

image() - Method in class dev.langchain4j.data.message.ImageContent

Get the Image.

Image - Class in dev.langchain4j.data.image

Represents an image as a URL or as a Base64-encoded string.

IMAGE - Enum constant in enum class dev.langchain4j.data.message.ContentType

Image content.

Image.Builder - Class in dev.langchain4j.data.image

Builder for Image.

ImageContent - Class in dev.langchain4j.data.message

Represents an image with a DetailLevel.

ImageContent(Image) - Constructor for class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given image.

ImageContent(Image, ImageContent.DetailLevel) - Constructor for class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given image.

ImageContent(String) - Constructor for class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given url.

ImageContent(String, ImageContent.DetailLevel) - Constructor for class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given url and detail level.

ImageContent(String, String) - Constructor for class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given base64 data and mime type.

ImageContent(String, String, ImageContent.DetailLevel) - Constructor for class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given base64 data and mime type.

ImageContent(URI) - Constructor for class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given url.

ImageContent(URI, ImageContent.DetailLevel) - Constructor for class dev.langchain4j.data.message.ImageContent

Create a new ImageContent from the given url and detail level.

ImageContent.DetailLevel - Enum Class in dev.langchain4j.data.message

The detail level of an Image.

ImageModel - Interface in dev.langchain4j.model.image

Text to Image generator model.

ingest(Document) - Method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor

Ingests a specified document into an EmbeddingStore that was specified during the creation of this EmbeddingStoreIngestor.

ingest(Document...) - Method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor

Ingests specified documents into an EmbeddingStore that was specified during the creation of this EmbeddingStoreIngestor.

ingest(Document, EmbeddingStore<TextSegment>) - Static method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor

Ingests a specified Document into a specified EmbeddingStore.

ingest(List<Document>) - Method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor

Ingests specified documents into an EmbeddingStore that was specified during the creation of this EmbeddingStoreIngestor.

ingest(List<Document>, EmbeddingStore<TextSegment>) - Static method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor

Ingests specified Documents into a specified EmbeddingStore.

IngestionResult - Class in dev.langchain4j.store.embedding

Represents the result of a EmbeddingStoreIngestor ingestion process.

IngestionResult(TokenUsage) - Constructor for class dev.langchain4j.store.embedding.IngestionResult

inject(List<Content>, ChatMessage) - Method in interface dev.langchain4j.rag.content.injector.ContentInjector

Injects given Contents into a given ChatMessage.

inject(List<Content>, ChatMessage) - Method in class dev.langchain4j.rag.content.injector.DefaultContentInjector

InMemoryChatMemoryStore - Class in dev.langchain4j.store.memory.chat

Implementation of ChatMemoryStore that stores state of ChatMemory (chat messages) in-memory.

InMemoryChatMemoryStore() - Constructor for class dev.langchain4j.store.memory.chat.InMemoryChatMemoryStore

Constructs a new InMemoryChatMemoryStore.

inputStream() - Method in interface dev.langchain4j.data.document.DocumentSource

Provides an InputStream to read the content of the document.

inputTokenCount() - Method in class dev.langchain4j.model.output.TokenUsage

Returns the input token count, or null if unknown.

Internal - Annotation Interface in dev.langchain4j

Indicates that the annotated class is intended for internal use only within the library.

InternalServerException - Exception Class in dev.langchain4j.exception

InternalServerException(String) - Constructor for exception class dev.langchain4j.exception.InternalServerException

InternalServerException(String, Throwable) - Constructor for exception class dev.langchain4j.exception.InternalServerException

InternalServerException(Throwable) - Constructor for exception class dev.langchain4j.exception.InternalServerException

InvalidRequestException - Exception Class in dev.langchain4j.exception

InvalidRequestException(String) - Constructor for exception class dev.langchain4j.exception.InvalidRequestException

InvalidRequestException(String, Throwable) - Constructor for exception class dev.langchain4j.exception.InvalidRequestException

InvalidRequestException(Throwable) - Constructor for exception class dev.langchain4j.exception.InvalidRequestException

isBetween(double, double) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isBetween(float, float) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isBetween(int, int) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isBetween(long, long) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isBetween(String, String) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isEqualTo(double) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isEqualTo(float) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isEqualTo(int) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isEqualTo(long) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isEqualTo(String) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isEqualTo(UUID) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

IsEqualTo - Class in dev.langchain4j.store.embedding.filter.comparison

IsEqualTo(String, Object) - Constructor for class dev.langchain4j.store.embedding.filter.comparison.IsEqualTo

isGreaterThan(double) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isGreaterThan(float) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isGreaterThan(int) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isGreaterThan(long) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isGreaterThan(String) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

IsGreaterThan - Class in dev.langchain4j.store.embedding.filter.comparison

IsGreaterThan(String, Comparable<?>) - Constructor for class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThan

isGreaterThanOrEqualTo(double) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isGreaterThanOrEqualTo(float) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isGreaterThanOrEqualTo(int) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isGreaterThanOrEqualTo(long) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isGreaterThanOrEqualTo(String) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

IsGreaterThanOrEqualTo - Class in dev.langchain4j.store.embedding.filter.comparison

IsGreaterThanOrEqualTo(String, Comparable<?>) - Constructor for class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThanOrEqualTo

isIn(double...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isIn(float...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isIn(int...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isIn(long...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isIn(String...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isIn(Collection<?>) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isIn(UUID...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

IsIn - Class in dev.langchain4j.store.embedding.filter.comparison

IsIn(String, Collection<?>) - Constructor for class dev.langchain4j.store.embedding.filter.comparison.IsIn

isLessThan(double) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isLessThan(float) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isLessThan(int) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isLessThan(long) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isLessThan(String) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

IsLessThan - Class in dev.langchain4j.store.embedding.filter.comparison

IsLessThan(String, Comparable<?>) - Constructor for class dev.langchain4j.store.embedding.filter.comparison.IsLessThan

isLessThanOrEqualTo(double) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isLessThanOrEqualTo(float) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isLessThanOrEqualTo(int) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isLessThanOrEqualTo(long) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isLessThanOrEqualTo(String) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

IsLessThanOrEqualTo - Class in dev.langchain4j.store.embedding.filter.comparison

IsLessThanOrEqualTo(String, Comparable<?>) - Constructor for class dev.langchain4j.store.embedding.filter.comparison.IsLessThanOrEqualTo

isNotEqualTo(double) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isNotEqualTo(float) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isNotEqualTo(int) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isNotEqualTo(long) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isNotEqualTo(String) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isNotEqualTo(UUID) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

IsNotEqualTo - Class in dev.langchain4j.store.embedding.filter.comparison

IsNotEqualTo(String, Object) - Constructor for class dev.langchain4j.store.embedding.filter.comparison.IsNotEqualTo

isNotIn(double...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isNotIn(float...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isNotIn(int...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isNotIn(long...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isNotIn(String...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isNotIn(Collection<?>) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

isNotIn(UUID...) - Method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

IsNotIn - Class in dev.langchain4j.store.embedding.filter.comparison

IsNotIn(String, Collection<?>) - Constructor for class dev.langchain4j.store.embedding.filter.comparison.IsNotIn

isNotNullOrBlank(String) - Static method in class dev.langchain4j.internal.Utils

Is the given string not null and not blank?

isNotNullOrEmpty(String) - Static method in class dev.langchain4j.internal.Utils

Is the given string not null and not empty ("")?

isNullOrBlank(String) - Static method in class dev.langchain4j.internal.Utils

Is the given string null or blank?

isNullOrEmpty(Iterable<?>) - Static method in class dev.langchain4j.internal.Utils

Is the iterable object null or empty?

isNullOrEmpty(String) - Static method in class dev.langchain4j.internal.Utils

Is the given string null or empty ("")?

isNullOrEmpty(Collection<?>) - Static method in class dev.langchain4j.internal.Utils

Is the collection null or empty?

isNullOrEmpty(Map<?, ?>) - Static method in class dev.langchain4j.internal.Utils

Is the map object null or empty?

isVirtualThread() - Static method in class dev.langchain4j.internal.VirtualThreadUtils

Checks if the current thread is a virtual thread.

isVirtualThreadsSupported() - Static method in class dev.langchain4j.internal.VirtualThreadUtils

Checks if virtual threads are supported in the current runtime environment.

items() - Method in class dev.langchain4j.model.chat.request.json.JsonArraySchema

items(JsonSchemaElement) - Method in class dev.langchain4j.model.chat.request.json.JsonArraySchema.Builder

J

JacocoIgnoreCoverageGenerated - Annotation Interface in dev.langchain4j.internal

Annotation to mark methods where JaCoCo coverage should be ignored.

jitterDelayMillis(int) - Method in class dev.langchain4j.internal.RetryUtils.RetryPolicy

This method returns the jitter delay in milliseconds after a given retry.

jitterScale(double) - Method in class dev.langchain4j.internal.RetryUtils.RetryPolicy.Builder

Sets the jitter scale.

join(StructuredPrompt) - Static method in class dev.langchain4j.model.input.structured.StructuredPrompt.Util

Joins the lines of the prompt template.

Json - Class in dev.langchain4j.internal

JSON helper class.

JSON - Enum constant in enum class dev.langchain4j.model.chat.request.ResponseFormatType

JSON - Static variable in class dev.langchain4j.model.chat.request.ResponseFormat

Json.JsonCodec - Interface in dev.langchain4j.internal

The abstract JSON codec interface.

JsonAnyOfSchema - Class in dev.langchain4j.model.chat.request.json

JsonAnyOfSchema(JsonAnyOfSchema.Builder) - Constructor for class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema

JsonAnyOfSchema.Builder - Class in dev.langchain4j.model.chat.request.json

JsonArraySchema - Class in dev.langchain4j.model.chat.request.json

JsonArraySchema(JsonArraySchema.Builder) - Constructor for class dev.langchain4j.model.chat.request.json.JsonArraySchema

JsonArraySchema.Builder - Class in dev.langchain4j.model.chat.request.json

JsonBooleanSchema - Class in dev.langchain4j.model.chat.request.json

JsonBooleanSchema() - Constructor for class dev.langchain4j.model.chat.request.json.JsonBooleanSchema

JsonBooleanSchema(JsonBooleanSchema.Builder) - Constructor for class dev.langchain4j.model.chat.request.json.JsonBooleanSchema

JsonBooleanSchema.Builder - Class in dev.langchain4j.model.chat.request.json

JsonCodecFactory - Interface in dev.langchain4j.spi.json

A factory for creating Json.JsonCodec instances through SPI.

JsonEnumSchema - Class in dev.langchain4j.model.chat.request.json

JsonEnumSchema(JsonEnumSchema.Builder) - Constructor for class dev.langchain4j.model.chat.request.json.JsonEnumSchema

JsonEnumSchema.Builder - Class in dev.langchain4j.model.chat.request.json

JsonIntegerSchema - Class in dev.langchain4j.model.chat.request.json

JsonIntegerSchema() - Constructor for class dev.langchain4j.model.chat.request.json.JsonIntegerSchema

JsonIntegerSchema(JsonIntegerSchema.Builder) - Constructor for class dev.langchain4j.model.chat.request.json.JsonIntegerSchema

JsonIntegerSchema.Builder - Class in dev.langchain4j.model.chat.request.json

JsonNullSchema - Class in dev.langchain4j.model.chat.request.json

JsonNullSchema() - Constructor for class dev.langchain4j.model.chat.request.json.JsonNullSchema

JsonNumberSchema - Class in dev.langchain4j.model.chat.request.json

JsonNumberSchema() - Constructor for class dev.langchain4j.model.chat.request.json.JsonNumberSchema

JsonNumberSchema(JsonNumberSchema.Builder) - Constructor for class dev.langchain4j.model.chat.request.json.JsonNumberSchema

JsonNumberSchema.Builder - Class in dev.langchain4j.model.chat.request.json

jsonObjectOrReferenceSchemaFrom(Class<?>, String, boolean, Map<Class<?>, JsonSchemaElementUtils.VisitedClassMetadata>, boolean) - Static method in class dev.langchain4j.internal.JsonSchemaElementUtils

JsonObjectSchema - Class in dev.langchain4j.model.chat.request.json

JsonObjectSchema(JsonObjectSchema.Builder) - Constructor for class dev.langchain4j.model.chat.request.json.JsonObjectSchema

JsonObjectSchema.Builder - Class in dev.langchain4j.model.chat.request.json

JsonReferenceSchema - Class in dev.langchain4j.model.chat.request.json

Can reference JsonObjectSchema when recursion is required.

JsonReferenceSchema(JsonReferenceSchema.Builder) - Constructor for class dev.langchain4j.model.chat.request.json.JsonReferenceSchema

JsonReferenceSchema.Builder - Class in dev.langchain4j.model.chat.request.json

jsonSchema() - Method in class dev.langchain4j.model.chat.request.ResponseFormat

jsonSchema(JsonSchema) - Method in class dev.langchain4j.model.chat.request.ResponseFormat.Builder

JsonSchema - Class in dev.langchain4j.model.chat.request.json

JsonSchema.Builder - Class in dev.langchain4j.model.chat.request.json

jsonSchemaElement - Variable in class dev.langchain4j.internal.JsonSchemaElementUtils.VisitedClassMetadata

JsonSchemaElement - Interface in dev.langchain4j.model.chat.request.json

A base interface for a JSON schema element.

jsonSchemaElementFrom(Class<?>) - Static method in class dev.langchain4j.internal.JsonSchemaElementUtils

jsonSchemaElementFrom(Class<?>, Type, String, boolean, Map<Class<?>, JsonSchemaElementUtils.VisitedClassMetadata>) - Static method in class dev.langchain4j.internal.JsonSchemaElementUtils

JsonSchemaElementUtils - Class in dev.langchain4j.internal

JsonSchemaElementUtils() - Constructor for class dev.langchain4j.internal.JsonSchemaElementUtils

JsonSchemaElementUtils.VisitedClassMetadata - Class in dev.langchain4j.internal

JsonStringSchema - Class in dev.langchain4j.model.chat.request.json

JsonStringSchema() - Constructor for class dev.langchain4j.model.chat.request.json.JsonStringSchema

JsonStringSchema(JsonStringSchema.Builder) - Constructor for class dev.langchain4j.model.chat.request.json.JsonStringSchema

JsonStringSchema.Builder - Class in dev.langchain4j.model.chat.request.json

K

key() - Method in class dev.langchain4j.store.embedding.filter.comparison.ContainsString

key() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsEqualTo

key() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThan

key() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThanOrEqualTo

key() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsIn

key() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThan

key() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThanOrEqualTo

key() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotEqualTo

key() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotIn

knownDimension() - Method in class dev.langchain4j.model.embedding.DimensionAwareEmbeddingModel

When known (e.g., can be derived from the model name), returns the dimension of the Embedding produced by this embedding model.

L

LambdaStreamingResponseHandler - Class in dev.langchain4j.model

Utility class with lambda-based streaming response handlers.

LambdaStreamingResponseHandler() - Constructor for class dev.langchain4j.model.LambdaStreamingResponseHandler

LangChain4jException - Exception Class in dev.langchain4j.exception

LangChain4jException(String) - Constructor for exception class dev.langchain4j.exception.LangChain4jException

LangChain4jException(String, Throwable) - Constructor for exception class dev.langchain4j.exception.LangChain4jException

LangChain4jException(Throwable) - Constructor for exception class dev.langchain4j.exception.LangChain4jException

language() - Method in class dev.langchain4j.web.search.WebSearchRequest

Get the desired language for search results.

language(String) - Method in class dev.langchain4j.web.search.WebSearchRequest.Builder

Set the desired language for search results.

LanguageModel - Interface in dev.langchain4j.model.language

Represents a language model that has a simple text interface (as opposed to a chat interface).

LanguageModelQueryRouter - Class in dev.langchain4j.rag.query.router

A QueryRouter that utilizes a ChatModel to make a routing decision.

LanguageModelQueryRouter(ChatModel, Map<ContentRetriever, String>) - Constructor for class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

LanguageModelQueryRouter(ChatModel, Map<ContentRetriever, String>, PromptTemplate, LanguageModelQueryRouter.FallbackStrategy) - Constructor for class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

LanguageModelQueryRouter.FallbackStrategy - Enum Class in dev.langchain4j.rag.query.router

Strategy applied if the call to the LLM fails of if LLM does not return a valid response.

LanguageModelQueryRouter.LanguageModelQueryRouterBuilder - Class in dev.langchain4j.rag.query.router

left() - Method in class dev.langchain4j.store.embedding.filter.logical.And

left() - Method in class dev.langchain4j.store.embedding.filter.logical.Or

LENGTH - Enum constant in enum class dev.langchain4j.model.output.FinishReason

The call finished because the token length was reached.

listeners() - Method in interface dev.langchain4j.model.chat.ChatModel

listeners() - Method in interface dev.langchain4j.model.chat.StreamingChatModel

load(DocumentSource, DocumentParser) - Static method in class dev.langchain4j.data.document.DocumentLoader

Loads a document from the given source using the given parser.

loadFactories(Class<T>) - Static method in class dev.langchain4j.spi.ServiceHelper

Load all the services of a given type.

loadFactories(Class<T>, ClassLoader) - Static method in class dev.langchain4j.spi.ServiceHelper

Load all the services of a given type.

LOW - Enum constant in enum class dev.langchain4j.data.message.ImageContent.DetailLevel

Low detail.

M

mapException(Throwable) - Method in class dev.langchain4j.internal.ExceptionMapper.DefaultExceptionMapper

mapException(Throwable) - Method in interface dev.langchain4j.internal.ExceptionMapper

mapHttpStatusCode(Throwable, int) - Method in class dev.langchain4j.internal.ExceptionMapper.DefaultExceptionMapper

mappingException(Callable<T>) - Static method in interface dev.langchain4j.internal.ExceptionMapper

Markers - Class in dev.langchain4j.internal

matches() - Method in class dev.langchain4j.store.embedding.EmbeddingSearchResult

maxOutputTokens() - Method in class dev.langchain4j.model.chat.request.ChatRequest

maxOutputTokens() - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

maxOutputTokens() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

maxOutputTokens(Integer) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

maxOutputTokens(Integer) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

maxResults() - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest

maxResults() - Method in class dev.langchain4j.web.search.WebSearchRequest

Get the maximum number of results.

maxResults(Integer) - Method in class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator.ReRankingContentAggregatorBuilder

maxResults(Integer) - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever.EmbeddingStoreContentRetrieverBuilder

maxResults(Integer) - Method in class dev.langchain4j.rag.content.retriever.WebSearchContentRetriever.WebSearchContentRetrieverBuilder

maxResults(Integer) - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest.EmbeddingSearchRequestBuilder

maxResults(Integer) - Method in class dev.langchain4j.web.search.WebSearchRequest.Builder

Set the maximum number of results.

maxRetries(int) - Method in class dev.langchain4j.internal.RetryUtils.RetryPolicy.Builder

Sets the default maximum number of retries.

merge(Metadata) - Method in class dev.langchain4j.data.document.Metadata

Merges the current Metadata object with another Metadata object.

messageClass() - Method in enum class dev.langchain4j.data.message.ChatMessageType

Returns the class of the message type.

messageFromJson(String) - Static method in class dev.langchain4j.data.message.ChatMessageDeserializer

Deserializes a JSON string into a ChatMessage.

messageFromJson(String) - Method in interface dev.langchain4j.data.message.ChatMessageJsonCodec

Deserializes a JSON string to a ChatMessage object.

messages() - Method in interface dev.langchain4j.memory.ChatMemory

Retrieves messages from the chat memory.

messages() - Method in class dev.langchain4j.model.chat.request.ChatRequest

messages(ChatMessage...) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

messages(List<ChatMessage>) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

messagesFromJson(String) - Static method in class dev.langchain4j.data.message.ChatMessageDeserializer

Deserializes a JSON string into a list of ChatMessage.

messagesFromJson(String) - Method in interface dev.langchain4j.data.message.ChatMessageJsonCodec

Deserializes a JSON string to a list of ChatMessage objects.

messagesToJson(List<ChatMessage>) - Method in interface dev.langchain4j.data.message.ChatMessageJsonCodec

Serializes a list of ChatMessage objects to a JSON string.

messagesToJson(List<ChatMessage>) - Static method in class dev.langchain4j.data.message.ChatMessageSerializer

Serializes a list of chat messages into a JSON string.

messageToJson(ChatMessage) - Method in interface dev.langchain4j.data.message.ChatMessageJsonCodec

Serializes a ChatMessage object to a JSON string.

messageToJson(ChatMessage) - Static method in class dev.langchain4j.data.message.ChatMessageSerializer

Serializes a chat message into a JSON string.

metadata() - Method in class dev.langchain4j.data.document.DefaultDocument

metadata() - Method in interface dev.langchain4j.data.document.Document

Returns the metadata associated with this document.

metadata() - Method in interface dev.langchain4j.data.document.DocumentSource

Returns the metadata associated with the source of the document.

metadata() - Method in class dev.langchain4j.data.segment.TextSegment

Returns the metadata.

metadata() - Method in class dev.langchain4j.model.chat.response.ChatResponse

metadata() - Method in class dev.langchain4j.model.output.Response

Get the response metadata.

metadata() - Method in class dev.langchain4j.rag.AugmentationRequest

metadata() - Method in interface dev.langchain4j.rag.content.Content

metadata() - Method in class dev.langchain4j.rag.content.DefaultContent

metadata() - Method in class dev.langchain4j.rag.query.Query

metadata() - Method in class dev.langchain4j.web.search.WebSearchInformationResult

Gets the metadata.

metadata() - Method in class dev.langchain4j.web.search.WebSearchOrganicResult

Returns the result metadata associated with the search result.

metadata(ChatResponseMetadata) - Method in class dev.langchain4j.model.chat.response.ChatResponse.Builder

metadata(String, String) - Static method in class dev.langchain4j.data.document.Metadata

Constructs a Metadata object from a single key-value pair.

Metadata - Class in dev.langchain4j.data.document

Represents metadata of a Document or a TextSegment.

Metadata - Class in dev.langchain4j.rag.query

Represents metadata that may be useful or necessary for retrieval or augmentation purposes.

Metadata() - Constructor for class dev.langchain4j.data.document.Metadata

Construct a Metadata object with an empty map of key-value pairs.

Metadata(ChatMessage, Object, List<ChatMessage>) - Constructor for class dev.langchain4j.rag.query.Metadata

Metadata(Map<String, ?>) - Constructor for class dev.langchain4j.data.document.Metadata

Constructs a Metadata object from a map of key-value pairs.

MetadataFilterBuilder - Class in dev.langchain4j.store.embedding.filter

A helper class for building a Filter for Metadata key.

MetadataFilterBuilder(String) - Constructor for class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

metadataKey(String) - Static method in class dev.langchain4j.store.embedding.filter.MetadataFilterBuilder

metadataKeysToInclude(List<String>) - Method in class dev.langchain4j.rag.content.injector.DefaultContentInjector.DefaultContentInjectorBuilder

mimeType() - Method in class dev.langchain4j.data.audio.Audio

Get the mime type of the audio.

mimeType() - Method in class dev.langchain4j.data.image.Image

Get the mime type of the image.

mimeType() - Method in class dev.langchain4j.data.pdf.PdfFile

Get the mime type of the rich format document.

mimeType() - Method in class dev.langchain4j.data.video.Video

Get the mime type of the video.

mimeType(String) - Method in class dev.langchain4j.data.audio.Audio.Builder

Set the mime type of the audio.

mimeType(String) - Method in class dev.langchain4j.data.image.Image.Builder

Set the mime type of the image.

mimeType(String) - Method in class dev.langchain4j.data.pdf.PdfFile.Builder

Set the mime type of the PDF document.

mimeType(String) - Method in class dev.langchain4j.data.video.Video.Builder

Set the mime type of the video.

minScore() - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest

minScore(Double) - Method in class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator.ReRankingContentAggregatorBuilder

minScore(Double) - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever.EmbeddingStoreContentRetrieverBuilder

minScore(Double) - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest.EmbeddingSearchRequestBuilder

MISTRAL_AI - Enum constant in enum class dev.langchain4j.model.ModelProvider

ModelDisabledException - Exception Class in dev.langchain4j.model

An exception thrown by a model that could be disabled by a user.

ModelDisabledException(String) - Constructor for exception class dev.langchain4j.model.ModelDisabledException

modelName() - Method in class dev.langchain4j.model.chat.request.ChatRequest

modelName() - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

modelName() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

modelName() - Method in class dev.langchain4j.model.chat.response.ChatResponse

modelName() - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata

modelName(String) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

modelName(String) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

modelName(String) - Method in class dev.langchain4j.model.chat.response.ChatResponse.Builder

modelName(String) - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata.Builder

ModelNotFoundException - Exception Class in dev.langchain4j.exception

ModelNotFoundException(String) - Constructor for exception class dev.langchain4j.exception.ModelNotFoundException

ModelNotFoundException(String, Throwable) - Constructor for exception class dev.langchain4j.exception.ModelNotFoundException

ModelNotFoundException(Throwable) - Constructor for exception class dev.langchain4j.exception.ModelNotFoundException

modelProvider() - Method in class dev.langchain4j.model.chat.listener.ChatModelErrorContext

modelProvider() - Method in class dev.langchain4j.model.chat.listener.ChatModelRequestContext

modelProvider() - Method in class dev.langchain4j.model.chat.listener.ChatModelResponseContext

ModelProvider - Enum Class in dev.langchain4j.model

moderate(ChatMessage) - Method in class dev.langchain4j.model.moderation.DisabledModerationModel

moderate(ChatMessage) - Method in interface dev.langchain4j.model.moderation.ModerationModel

Moderates the given chat message.

moderate(TextSegment) - Method in class dev.langchain4j.model.moderation.DisabledModerationModel

moderate(TextSegment) - Method in interface dev.langchain4j.model.moderation.ModerationModel

Moderates the given text segment.

moderate(Prompt) - Method in class dev.langchain4j.model.moderation.DisabledModerationModel

moderate(Prompt) - Method in interface dev.langchain4j.model.moderation.ModerationModel

Moderates the given prompt.

moderate(String) - Method in class dev.langchain4j.model.moderation.DisabledModerationModel

moderate(String) - Method in interface dev.langchain4j.model.moderation.ModerationModel

Moderates the given text.

moderate(List<ChatMessage>) - Method in class dev.langchain4j.model.moderation.DisabledModerationModel

moderate(List<ChatMessage>) - Method in interface dev.langchain4j.model.moderation.ModerationModel

Moderates the given list of chat messages.

Moderation - Class in dev.langchain4j.model.moderation

Represents moderation status.

Moderation() - Constructor for class dev.langchain4j.model.moderation.Moderation

Construct a Moderation object that is not flagged.

Moderation(String) - Constructor for class dev.langchain4j.model.moderation.Moderation

Construct a Moderation object that is flagged.

ModerationModel - Interface in dev.langchain4j.model.moderation

Represents a model that can moderate text.

N

n - Variable in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

n(Integer) - Method in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer.ExpandingQueryTransformerBuilder

name() - Element in annotation interface dev.langchain4j.agent.tool.Tool

Name of the tool.

name() - Method in class dev.langchain4j.agent.tool.ToolExecutionRequest

Returns the name of the tool.

name() - Method in class dev.langchain4j.agent.tool.ToolSpecification

Returns the name of the tool.

name() - Method in class dev.langchain4j.data.message.UserMessage

The name of the user.

name() - Method in class dev.langchain4j.model.chat.request.json.JsonSchema

name(String) - Method in class dev.langchain4j.agent.tool.ToolExecutionRequest.Builder

Sets the name.

name(String) - Method in class dev.langchain4j.agent.tool.ToolSpecification.Builder

Sets the name.

name(String) - Method in class dev.langchain4j.data.message.UserMessage.Builder

name(String) - Method in class dev.langchain4j.model.chat.request.json.JsonSchema.Builder

NonRetriableException - Exception Class in dev.langchain4j.exception

NonRetriableException(String) - Constructor for exception class dev.langchain4j.exception.NonRetriableException

NonRetriableException(String, Throwable) - Constructor for exception class dev.langchain4j.exception.NonRetriableException

NonRetriableException(Throwable) - Constructor for exception class dev.langchain4j.exception.NonRetriableException

normalize() - Method in class dev.langchain4j.data.embedding.Embedding

Normalize vector

not(Filter) - Static method in interface dev.langchain4j.store.embedding.filter.Filter

Not - Class in dev.langchain4j.store.embedding.filter.logical

Not(Filter) - Constructor for class dev.langchain4j.store.embedding.filter.logical.Not

notFlagged() - Static method in class dev.langchain4j.model.moderation.Moderation

Constructs a Moderation object that is not flagged.

O

OLLAMA - Enum constant in enum class dev.langchain4j.model.ModelProvider

onComplete(Response<T>) - Method in interface dev.langchain4j.model.StreamingResponseHandler

Invoked when the language model has finished streaming a response.

onCompleteResponse(ChatResponse) - Method in interface dev.langchain4j.model.chat.response.StreamingChatResponseHandler

Invoked when the model has finished streaming a response.

onError(ChatModelErrorContext) - Method in interface dev.langchain4j.model.chat.listener.ChatModelListener

This method is called when an error occurs during interaction with the model.

onError(Throwable) - Method in interface dev.langchain4j.model.chat.response.StreamingChatResponseHandler

This method is invoked when an error occurs during streaming.

onError(Throwable) - Method in interface dev.langchain4j.model.StreamingResponseHandler

This method is invoked when an error occurs during streaming.

onNext(String) - Method in interface dev.langchain4j.model.StreamingResponseHandler

Invoked each time the language model generates a new token in a textual response.

onPartialResponse(String) - Method in interface dev.langchain4j.model.chat.response.StreamingChatResponseHandler

Invoked each time the model generates a partial response (usually a single token) in a textual response.

onPartialResponse(Consumer<String>) - Static method in class dev.langchain4j.model.LambdaStreamingResponseHandler

onPartialResponseAndError(Consumer<String>, Consumer<Throwable>) - Static method in class dev.langchain4j.model.LambdaStreamingResponseHandler

onRequest(ChatModelRequestContext) - Method in interface dev.langchain4j.model.chat.listener.ChatModelListener

This method is called before the request is sent to the model.

onResponse(ChatModelResponseContext) - Method in interface dev.langchain4j.model.chat.listener.ChatModelListener

This method is called after the response is received from the model.

OPEN_AI - Enum constant in enum class dev.langchain4j.model.ModelProvider

options - Variable in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

or(Filter) - Method in interface dev.langchain4j.store.embedding.filter.Filter

or(Filter, Filter) - Static method in interface dev.langchain4j.store.embedding.filter.Filter

Or - Class in dev.langchain4j.store.embedding.filter.logical

Or(Filter, Filter) - Constructor for class dev.langchain4j.store.embedding.filter.logical.Or

OTHER - Enum constant in enum class dev.langchain4j.model.ModelProvider

OTHER - Enum constant in enum class dev.langchain4j.model.output.FinishReason

The call finished for some other reason.

outputTokenCount() - Method in class dev.langchain4j.model.output.TokenUsage

Returns the output token count, or null if unknown.

overrideWith(ChatRequestParameters) - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

Creates a new ChatRequestParameters by combining the current parameters with the specified ones.

overrideWith(ChatRequestParameters) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

overrideWith(ChatRequestParameters) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

P

P - Annotation Interface in dev.langchain4j.agent.tool

Parameter of a Tool

pageNumber() - Method in class dev.langchain4j.web.search.WebSearchInformationResult

Gets the page number.

parameters() - Method in class dev.langchain4j.agent.tool.ToolSpecification

Returns the parameters of the tool.

parameters() - Method in class dev.langchain4j.model.chat.request.ChatRequest

parameters(ChatRequestParameters) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

parameters(JsonObjectSchema) - Method in class dev.langchain4j.agent.tool.ToolSpecification.Builder

Sets the parameters.

parse(InputStream) - Method in interface dev.langchain4j.data.document.DocumentParser

Parses a given InputStream into a Document.

parse(String) - Method in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

parse(String) - Method in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

parse(String) - Method in interface dev.langchain4j.store.embedding.filter.FilterParser

Parses a filter expression string into a Filter object.

PDF - Enum constant in enum class dev.langchain4j.data.message.ContentType

PDF file content.

pdfFile() - Method in class dev.langchain4j.data.message.PdfFileContent

Get the PdfFile.

PdfFile - Class in dev.langchain4j.data.pdf

PdfFile.Builder - Class in dev.langchain4j.data.pdf

Builder for PdfFile.

PdfFileContent - Class in dev.langchain4j.data.message

PdfFileContent(PdfFile) - Constructor for class dev.langchain4j.data.message.PdfFileContent

Create a new PdfFileContent from the given PDF file.

PdfFileContent(String) - Constructor for class dev.langchain4j.data.message.PdfFileContent

Create a new PdfFileContent from the given url.

PdfFileContent(String, String) - Constructor for class dev.langchain4j.data.message.PdfFileContent

Create a new PdfFileContent from the given base64 data and mime type.

PdfFileContent(URI) - Constructor for class dev.langchain4j.data.message.PdfFileContent

Create a new PdfFileContent from the given url.

presencePenalty() - Method in class dev.langchain4j.model.chat.request.ChatRequest

presencePenalty() - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

presencePenalty() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

presencePenalty(Double) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

presencePenalty(Double) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

probeContentType(String) - Method in class dev.langchain4j.internal.CustomMimeTypesFileTypeDetector

probeContentType(URI) - Method in class dev.langchain4j.internal.CustomMimeTypesFileTypeDetector

Guess the mime-type of a given URI.

probeContentType(Path) - Method in class dev.langchain4j.internal.CustomMimeTypesFileTypeDetector

Guess the mime-type of a given path.

Prompt - Class in dev.langchain4j.model.input

Represents a prompt (an input text sent to the LLM).

Prompt(String) - Constructor for class dev.langchain4j.model.input.Prompt

Create a new Prompt.

promptTemplate - Variable in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

promptTemplate - Variable in class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer

promptTemplate - Variable in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

promptTemplate(PromptTemplate) - Method in class dev.langchain4j.rag.content.injector.DefaultContentInjector.DefaultContentInjectorBuilder

promptTemplate(PromptTemplate) - Method in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter.LanguageModelQueryRouterBuilder

promptTemplate(PromptTemplate) - Method in class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer.CompressingQueryTransformerBuilder

promptTemplate(PromptTemplate) - Method in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer.ExpandingQueryTransformerBuilder

PromptTemplate - Class in dev.langchain4j.model.input

Represents a template of a prompt that can be reused multiple times.

PromptTemplate(String) - Constructor for class dev.langchain4j.model.input.PromptTemplate

Create a new PromptTemplate.

PromptTemplateFactory - Interface in dev.langchain4j.spi.prompt

A factory for creating prompt templates.

PromptTemplateFactory.Input - Interface in dev.langchain4j.spi.prompt

Interface for input for the factory.

PromptTemplateFactory.Template - Interface in dev.langchain4j.spi.prompt

Interface for a prompt template.

properties() - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema

provider() - Method in interface dev.langchain4j.model.chat.ChatModel

provider() - Method in interface dev.langchain4j.model.chat.StreamingChatModel

put(String, double) - Method in class dev.langchain4j.data.document.Metadata

Adds a key-value pair to the metadata.

put(String, float) - Method in class dev.langchain4j.data.document.Metadata

Adds a key-value pair to the metadata.

put(String, int) - Method in class dev.langchain4j.data.document.Metadata

Adds a key-value pair to the metadata.

put(String, long) - Method in class dev.langchain4j.data.document.Metadata

Adds a key-value pair to the metadata.

put(String, String) - Method in class dev.langchain4j.data.document.Metadata

Adds a key-value pair to the metadata.

put(String, UUID) - Method in class dev.langchain4j.data.document.Metadata

Adds a key-value pair to the metadata.

putAll(Map<String, Object>) - Method in class dev.langchain4j.data.document.Metadata

Q

Query - Class in dev.langchain4j.rag.query

Represents a query from the user intended for retrieving relevant Contents.

Query(String) - Constructor for class dev.langchain4j.rag.query.Query

Query(String, Metadata) - Constructor for class dev.langchain4j.rag.query.Query

queryEmbedding() - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest

queryEmbedding(Embedding) - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest.EmbeddingSearchRequestBuilder

queryRouter(QueryRouter) - Method in class dev.langchain4j.rag.DefaultRetrievalAugmentor.DefaultRetrievalAugmentorBuilder

QueryRouter - Interface in dev.langchain4j.rag.query.router

Routes the given Query to one or multiple ContentRetrievers.

querySelector(Function<Map<Query, Collection<List<Content>>>, Query>) - Method in class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator.ReRankingContentAggregatorBuilder

queryTransformer(QueryTransformer) - Method in class dev.langchain4j.rag.DefaultRetrievalAugmentor.DefaultRetrievalAugmentorBuilder

QueryTransformer - Interface in dev.langchain4j.rag.query.transformer

Transforms the given Query into one or multiple Querys.

quoted(Object) - Static method in class dev.langchain4j.internal.Utils

Returns the given object's toString() surrounded by quotes.

R

randomUUID() - Static method in class dev.langchain4j.internal.Utils

Returns a random UUID.

RateLimitException - Exception Class in dev.langchain4j.exception

RateLimitException(String) - Constructor for exception class dev.langchain4j.exception.RateLimitException

RateLimitException(String, Throwable) - Constructor for exception class dev.langchain4j.exception.RateLimitException

RateLimitException(Throwable) - Constructor for exception class dev.langchain4j.exception.RateLimitException

rawDelayMs(int) - Method in class dev.langchain4j.internal.RetryUtils.RetryPolicy

This method returns the raw delay in milliseconds after a given retry.

readBytes(String) - Static method in class dev.langchain4j.internal.Utils

Reads the content as bytes from the given URL as a GET request for HTTP/HTTPS resources, and from files stored on the local filesystem.

ReciprocalRankFuser - Class in dev.langchain4j.rag.content.aggregator

Implementation of Reciprocal Rank Fusion.

ReciprocalRankFuser() - Constructor for class dev.langchain4j.rag.content.aggregator.ReciprocalRankFuser

recursionDetected - Variable in class dev.langchain4j.internal.JsonSchemaElementUtils.VisitedClassMetadata

reference - Variable in class dev.langchain4j.internal.JsonSchemaElementUtils.VisitedClassMetadata

reference() - Method in class dev.langchain4j.model.chat.request.json.JsonReferenceSchema

reference(String) - Method in class dev.langchain4j.model.chat.request.json.JsonReferenceSchema.Builder

RelevanceScore - Class in dev.langchain4j.store.embedding

Utility class for converting between cosine similarity and relevance score.

remove(String) - Method in class dev.langchain4j.data.document.Metadata

Removes the given key from the metadata.

remove(String) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Removes a single embedding from the store by ID.

removeAll() - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Removes all embeddings from the store.

removeAll(Filter) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Removes all embeddings that match the specified Filter from the store.

removeAll(Collection<String>) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Removes all embeddings that match the specified IDs from the store.

render(Map<String, Object>) - Method in interface dev.langchain4j.spi.prompt.PromptTemplateFactory.Template

Render the template.

repeat(String, int) - Static method in class dev.langchain4j.internal.Utils

Returns a string consisting of the given string repeated times times.

required() - Element in annotation interface dev.langchain4j.agent.tool.P

Whether the parameter is required

required() - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema

required(String...) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

required(List<String>) - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema.Builder

REQUIRED - Enum constant in enum class dev.langchain4j.model.chat.request.ToolChoice

The chat model is required to use one or more tools.

reRankAndFilter(List<Content>, Query) - Method in class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator

RERANKED_SCORE - Enum constant in enum class dev.langchain4j.rag.content.ContentMetadata

ReRankingContentAggregator - Class in dev.langchain4j.rag.content.aggregator

A ContentAggregator that performs re-ranking using a ScoringModel, such as Cohere.

ReRankingContentAggregator(ScoringModel) - Constructor for class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator

ReRankingContentAggregator(ScoringModel, Function<Map<Query, Collection<List<Content>>>, Query>, Double) - Constructor for class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator

ReRankingContentAggregator(ScoringModel, Function<Map<Query, Collection<List<Content>>>, Query>, Double, Integer) - Constructor for class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator

ReRankingContentAggregator.ReRankingContentAggregatorBuilder - Class in dev.langchain4j.rag.content.aggregator

Response<T> - Class in dev.langchain4j.model.output

Represents the response from various types of models, including language, chat, embedding, and moderation models.

Response(T) - Constructor for class dev.langchain4j.model.output.Response

Create a new Response.

Response(T, TokenUsage, FinishReason) - Constructor for class dev.langchain4j.model.output.Response

Create a new Response.

Response(T, TokenUsage, FinishReason, Map<String, Object>) - Constructor for class dev.langchain4j.model.output.Response

Create a new Response.

RESPONSE_FORMAT_JSON_SCHEMA - Enum constant in enum class dev.langchain4j.model.chat.Capability

Indicates whether ChatModel or StreamingChatModel supports responding in JSON format according to the specified JSON schema.

responseFormat() - Method in class dev.langchain4j.model.chat.request.ChatRequest

responseFormat() - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

responseFormat() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

responseFormat(JsonSchema) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

responseFormat(ResponseFormat) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

responseFormat(ResponseFormat) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

ResponseFormat - Class in dev.langchain4j.model.chat.request

ResponseFormat.Builder - Class in dev.langchain4j.model.chat.request

ResponseFormatType - Enum Class in dev.langchain4j.model.chat.request

results() - Method in class dev.langchain4j.web.search.WebSearchResults

Gets the list of organic search results.

RetriableException - Exception Class in dev.langchain4j.exception

RetriableException(String) - Constructor for exception class dev.langchain4j.exception.RetriableException

RetriableException(String, Throwable) - Constructor for exception class dev.langchain4j.exception.RetriableException

RetriableException(Throwable) - Constructor for exception class dev.langchain4j.exception.RetriableException

RetrievalAugmentor - Interface in dev.langchain4j.rag

Augments the provided ChatMessage with retrieved Contents.

retrieve(Query) - Method in interface dev.langchain4j.rag.content.retriever.ContentRetriever

Retrieves relevant Contents using a given Query.

retrieve(Query) - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever

retrieve(Query) - Method in class dev.langchain4j.rag.content.retriever.WebSearchContentRetriever

retrieverToDescription(Map<ContentRetriever, String>) - Method in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter.LanguageModelQueryRouterBuilder

RetryPolicy(int, int, double, double) - Constructor for class dev.langchain4j.internal.RetryUtils.RetryPolicy

Construct a RetryPolicy.

retryPolicyBuilder() - Static method in class dev.langchain4j.internal.RetryUtils

This method returns a RetryPolicy.Builder.

RetryUtils - Class in dev.langchain4j.internal

Utility class for retrying actions.

RetryUtils.RetryPolicy - Class in dev.langchain4j.internal

This class encapsulates a retry policy.

RetryUtils.RetryPolicy.Builder - Class in dev.langchain4j.internal

This class encapsulates a retry policy builder.

revisedPrompt() - Method in class dev.langchain4j.data.image.Image

Get the revised prompt of the image.

revisedPrompt(String) - Method in class dev.langchain4j.data.image.Image.Builder

Set the revised prompt of the image.

right() - Method in class dev.langchain4j.store.embedding.filter.logical.And

right() - Method in class dev.langchain4j.store.embedding.filter.logical.Or

rootElement() - Method in class dev.langchain4j.model.chat.request.json.JsonSchema

rootElement(JsonSchemaElement) - Method in class dev.langchain4j.model.chat.request.json.JsonSchema.Builder

route(Query) - Method in class dev.langchain4j.rag.query.router.DefaultQueryRouter

route(Query) - Method in class dev.langchain4j.rag.query.router.LanguageModelQueryRouter

route(Query) - Method in interface dev.langchain4j.rag.query.router.QueryRouter

Routes the given Query to one or multiple ContentRetrievers.

ROUTE_TO_ALL - Enum constant in enum class dev.langchain4j.rag.query.router.LanguageModelQueryRouter.FallbackStrategy

In this case, the Query will be routed to all ContentRetrievers.

runtime(String, Object...) - Static method in class dev.langchain4j.internal.Exceptions

Constructs an RuntimeException with the given formatted result.

S

safeSearch() - Method in class dev.langchain4j.web.search.WebSearchRequest

Get the safe search flag.

safeSearch(Boolean) - Method in class dev.langchain4j.web.search.WebSearchRequest.Builder

Set the safe search flag.

score() - Method in class dev.langchain4j.store.embedding.EmbeddingMatch

Returns the relevance score (derivative of cosine distance) of this embedding compared to a reference embedding during a search.

score(TextSegment, String) - Method in interface dev.langchain4j.model.scoring.ScoringModel

Scores a given TextSegment against a given query.

score(String, String) - Method in interface dev.langchain4j.model.scoring.ScoringModel

Scores a given text against a given query.

SCORE - Enum constant in enum class dev.langchain4j.rag.content.ContentMetadata

scoreAll(List<TextSegment>, String) - Method in interface dev.langchain4j.model.scoring.ScoringModel

Scores all provided TextSegments against a given query.

scoringModel(ScoringModel) - Method in class dev.langchain4j.rag.content.aggregator.ReRankingContentAggregator.ReRankingContentAggregatorBuilder

ScoringModel - Interface in dev.langchain4j.model.scoring

Represents a model capable of scoring a text against a query.

search(EmbeddingSearchRequest) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Searches for the most similar (closest in the embedding space) Embeddings.

search(WebSearchRequest) - Method in interface dev.langchain4j.web.search.WebSearchEngine

Performs a search request on the web search engine and returns the search results.

search(String) - Method in interface dev.langchain4j.web.search.WebSearchEngine

Performs a search query on the web search engine and returns the search results.

searchInformation() - Method in class dev.langchain4j.web.search.WebSearchResults

Gets the information about the web search.

searchMetadata() - Method in class dev.langchain4j.web.search.WebSearchResults

Gets the metadata associated with the web search.

searchTerms() - Method in class dev.langchain4j.web.search.WebSearchRequest

Get the search terms.

searchTerms(String) - Method in class dev.langchain4j.web.search.WebSearchRequest.Builder

Set the search terms.

searchWeb(String) - Method in class dev.langchain4j.web.search.WebSearchTool

Runs a search query on the web search engine and returns a pretty-string representation of the search results.

SENSITIVE - Static variable in class dev.langchain4j.internal.Markers

ServiceHelper - Class in dev.langchain4j.spi

Utility wrapper around ServiceLoader.load().

singleText() - Method in class dev.langchain4j.data.message.UserMessage

Returns text from a single TextContent.

sleep(int) - Method in class dev.langchain4j.internal.RetryUtils.RetryPolicy

This method sleeps after a given retry.

snippet() - Method in class dev.langchain4j.web.search.WebSearchOrganicResult

Returns the snippet associated with the web page.

split(Document) - Method in interface dev.langchain4j.data.document.DocumentSplitter

Splits a single Document into a list of TextSegment objects.

splitAll(List<Document>) - Method in interface dev.langchain4j.data.document.DocumentSplitter

Splits a list of Documents into a list of TextSegment objects.

startIndex() - Method in class dev.langchain4j.web.search.WebSearchRequest

Get the start index for search results.

startIndex(Integer) - Method in class dev.langchain4j.web.search.WebSearchRequest.Builder

Set the start index for search results.

startPage() - Method in class dev.langchain4j.web.search.WebSearchRequest

Get the start page number for search results.

startPage(Integer) - Method in class dev.langchain4j.web.search.WebSearchRequest.Builder

Set the start page number for search results.

statusCode() - Method in exception class dev.langchain4j.exception.HttpException

STOP - Enum constant in enum class dev.langchain4j.model.output.FinishReason

The model call finished because the model decided the request was done.

stopSequences() - Method in class dev.langchain4j.model.chat.request.ChatRequest

stopSequences() - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

stopSequences() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

stopSequences(String...) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

stopSequences(List<String>) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

stopSequences(List<String>) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

StreamingChatModel - Interface in dev.langchain4j.model.chat

Represents a language model that has a chat API and can stream a response one token at a time.

StreamingChatResponseHandler - Interface in dev.langchain4j.model.chat.response

Represents a handler for a StreamingChatModel response.

StreamingLanguageModel - Interface in dev.langchain4j.model.language

Represents a language model that has a simple text interface (as opposed to a chat interface) and can stream a response one token at a time.

StreamingResponseHandler<T> - Interface in dev.langchain4j.model

Represents a handler for streaming responses from a language model.

StructuredPrompt - Annotation Interface in dev.langchain4j.model.input.structured

Represents a structured prompt.

StructuredPrompt.Util - Class in dev.langchain4j.model.input.structured

Utility class for StructuredPrompt.

StructuredPromptFactory - Interface in dev.langchain4j.spi.prompt.structured

Represents a factory for structured prompts.

StructuredPromptProcessor - Class in dev.langchain4j.model.input.structured

Utility class for structured prompts.

sum(TokenUsage, TokenUsage) - Static method in class dev.langchain4j.model.output.TokenUsage

Adds two token usages.

sum(Integer, Integer) - Static method in class dev.langchain4j.model.output.TokenUsage

Sum two integers, returning null if both are null.

supportedCapabilities() - Method in interface dev.langchain4j.model.chat.ChatModel

supportedCapabilities() - Method in interface dev.langchain4j.model.chat.StreamingChatModel

SYSTEM - Enum constant in enum class dev.langchain4j.data.message.ChatMessageType

A message from the system, typically defined by a developer.

systemMessage(String) - Static method in class dev.langchain4j.data.message.SystemMessage

Creates a new system message.

SystemMessage - Class in dev.langchain4j.data.message

Represents a system message, typically defined by a developer.

SystemMessage(String) - Constructor for class dev.langchain4j.data.message.SystemMessage

Creates a new system message.

T

temperature() - Method in class dev.langchain4j.model.chat.request.ChatRequest

temperature() - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

temperature() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

temperature(Double) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

temperature(Double) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

template() - Method in class dev.langchain4j.model.input.PromptTemplate

test(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.ContainsString

test(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsEqualTo

test(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThan

test(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThanOrEqualTo

test(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsIn

test(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThan

test(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThanOrEqualTo

test(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotEqualTo

test(Object) - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotIn

test(Object) - Method in interface dev.langchain4j.store.embedding.filter.Filter

Tests if a given object satisfies this Filter.

test(Object) - Method in class dev.langchain4j.store.embedding.filter.logical.And

test(Object) - Method in class dev.langchain4j.store.embedding.filter.logical.Not

test(Object) - Method in class dev.langchain4j.store.embedding.filter.logical.Or

text() - Method in class dev.langchain4j.data.document.DefaultDocument

text() - Method in interface dev.langchain4j.data.document.Document

Returns the text of this document.

text() - Method in class dev.langchain4j.data.message.AiMessage

Get the text of the message.

text() - Method in class dev.langchain4j.data.message.SystemMessage

Returns the message text.

text() - Method in class dev.langchain4j.data.message.TextContent

Returns the text.

text() - Method in class dev.langchain4j.data.message.ToolExecutionResultMessage

Returns the result of the tool execution.

text() - Method in class dev.langchain4j.data.segment.TextSegment

Returns the text.

text() - Method in class dev.langchain4j.model.input.Prompt

The text of the prompt.

text() - Method in class dev.langchain4j.rag.query.Query

text(String) - Method in class dev.langchain4j.data.message.AiMessage.Builder

TEXT - Enum constant in enum class dev.langchain4j.data.message.ContentType

Text content.

TEXT - Enum constant in enum class dev.langchain4j.model.chat.request.ResponseFormatType

TEXT - Static variable in class dev.langchain4j.model.chat.request.ResponseFormat

TextContent - Class in dev.langchain4j.data.message

Represents a text content.

TextContent(String) - Constructor for class dev.langchain4j.data.message.TextContent

Creates a new text content.

textSegment() - Method in interface dev.langchain4j.rag.content.Content

textSegment() - Method in class dev.langchain4j.rag.content.DefaultContent

textSegment(String) - Static method in class dev.langchain4j.data.segment.TextSegment

Creates a new text segment.

textSegment(String, Metadata) - Static method in class dev.langchain4j.data.segment.TextSegment

Creates a new text segment.

TextSegment - Class in dev.langchain4j.data.segment

Represents a semantically meaningful segment (chunk/piece/fragment) of a larger entity such as a document or chat conversation.

TextSegment(String, Metadata) - Constructor for class dev.langchain4j.data.segment.TextSegment

Creates a new text segment.

textSegmentTransformer(TextSegmentTransformer) - Method in class dev.langchain4j.store.embedding.EmbeddingStoreIngestor.Builder

Sets the text segment transformer.

TextSegmentTransformer - Interface in dev.langchain4j.data.segment

Defines the interface for transforming a TextSegment.

TimeoutException - Exception Class in dev.langchain4j.exception

TimeoutException(String) - Constructor for exception class dev.langchain4j.exception.TimeoutException

TimeoutException(String, Throwable) - Constructor for exception class dev.langchain4j.exception.TimeoutException

TimeoutException(Throwable) - Constructor for exception class dev.langchain4j.exception.TimeoutException

title() - Method in class dev.langchain4j.web.search.WebSearchOrganicResult

Returns the title of the web page.

toAiMessage() - Method in class dev.langchain4j.model.input.Prompt

Convert this prompt to an AiMessage.

toBuilder() - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata

toBuilder(ChatResponseMetadata.Builder<?>) - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata

toDocument() - Method in class dev.langchain4j.web.search.WebSearchOrganicResult

Converts this WebSearchOrganicResult to a Document.

toDocuments() - Method in class dev.langchain4j.web.search.WebSearchResults

Converts the organic search results to a list of documents.

toJson(Object) - Method in interface dev.langchain4j.internal.Json.JsonCodec

Convert the given object to JSON.

toJson(Object) - Static method in class dev.langchain4j.internal.Json

Convert the given object to JSON.

TokenCountEstimator - Interface in dev.langchain4j.model

Represents an interface for estimating the count of tokens in various text types such as a text, prompt, text segment, etc.

tokenUsage() - Method in class dev.langchain4j.model.chat.response.ChatResponse

tokenUsage() - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata

tokenUsage() - Method in class dev.langchain4j.model.output.Response

Get the token usage statistics.

tokenUsage() - Method in class dev.langchain4j.store.embedding.IngestionResult

tokenUsage(TokenUsage) - Method in class dev.langchain4j.model.chat.response.ChatResponse.Builder

tokenUsage(TokenUsage) - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata.Builder

TokenUsage - Class in dev.langchain4j.model.output

Represents the token usage of a response.

TokenUsage() - Constructor for class dev.langchain4j.model.output.TokenUsage

Creates a new TokenUsage instance with all fields set to null.

TokenUsage(Integer) - Constructor for class dev.langchain4j.model.output.TokenUsage

Creates a new TokenUsage instance with the given input token count.

TokenUsage(Integer, Integer) - Constructor for class dev.langchain4j.model.output.TokenUsage

Creates a new TokenUsage instance with the given input and output token counts.

TokenUsage(Integer, Integer, Integer) - Constructor for class dev.langchain4j.model.output.TokenUsage

Creates a new TokenUsage instance with the given input, output and total token counts.

toMap() - Method in class dev.langchain4j.data.document.Metadata

Get a copy of the metadata as a map of key-value pairs.

toMap(JsonSchemaElement) - Static method in class dev.langchain4j.internal.JsonSchemaElementUtils

toMap(JsonSchemaElement, boolean) - Static method in class dev.langchain4j.internal.JsonSchemaElementUtils

toMap(JsonSchemaElement, boolean, boolean) - Static method in class dev.langchain4j.internal.JsonSchemaElementUtils

toMap(Map<String, JsonSchemaElement>) - Static method in class dev.langchain4j.internal.JsonSchemaElementUtils

toMap(Map<String, JsonSchemaElement>, boolean) - Static method in class dev.langchain4j.internal.JsonSchemaElementUtils

Tool - Annotation Interface in dev.langchain4j.agent.tool

Java methods annotated with @Tool are considered tools/functions that language model can execute/call.

TOOL_EXECUTION - Enum constant in enum class dev.langchain4j.model.output.FinishReason

The call finished signalling a need for tool execution.

TOOL_EXECUTION_RESULT - Enum constant in enum class dev.langchain4j.data.message.ChatMessageType

A message from a tool.

toolChoice() - Method in class dev.langchain4j.model.chat.request.ChatRequest

toolChoice() - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

toolChoice() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

toolChoice(ToolChoice) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

toolChoice(ToolChoice) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

ToolChoice - Enum Class in dev.langchain4j.model.chat.request

Specifies how ChatModel should use tools.

ToolExecutionRequest - Class in dev.langchain4j.agent.tool

Represents an LLM-generated request to execute a tool.

ToolExecutionRequest.Builder - Class in dev.langchain4j.agent.tool

ToolExecutionRequest builder static inner class.

toolExecutionRequests() - Method in class dev.langchain4j.data.message.AiMessage

Get the tool execution requests of the message.

toolExecutionRequests(List<ToolExecutionRequest>) - Method in class dev.langchain4j.data.message.AiMessage.Builder

toolExecutionResultMessage(ToolExecutionRequest, String) - Static method in class dev.langchain4j.data.message.ToolExecutionResultMessage

Creates a ToolExecutionResultMessage from a ToolExecutionRequest and the result of the tool execution.

toolExecutionResultMessage(String, String, String) - Static method in class dev.langchain4j.data.message.ToolExecutionResultMessage

Creates a ToolExecutionResultMessage from a ToolExecutionRequest and the result of the tool execution.

ToolExecutionResultMessage - Class in dev.langchain4j.data.message

Represents the result of a tool execution in response to a ToolExecutionRequest.

ToolExecutionResultMessage(String, String, String) - Constructor for class dev.langchain4j.data.message.ToolExecutionResultMessage

Creates a ToolExecutionResultMessage.

ToolMemoryId - Annotation Interface in dev.langchain4j.agent.tool

If a Tool method parameter is annotated with this annotation, memory id (parameter annotated with @MemoryId in AI Service) will be injected automatically.

toolName() - Method in class dev.langchain4j.data.message.ToolExecutionResultMessage

Returns the name of the tool.

ToolSpecification - Class in dev.langchain4j.agent.tool

Describes a tool that language model can execute.

ToolSpecification.Builder - Class in dev.langchain4j.agent.tool

ToolSpecification builder static inner class.

toolSpecificationFrom(Method) - Static method in class dev.langchain4j.agent.tool.ToolSpecifications

Returns the ToolSpecification for the given method annotated with @Tool.

toolSpecifications() - Method in class dev.langchain4j.model.chat.request.ChatRequest

toolSpecifications() - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

toolSpecifications() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

toolSpecifications(ToolSpecification...) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

toolSpecifications(ToolSpecification...) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

toolSpecifications(List<ToolSpecification>) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

toolSpecifications(List<ToolSpecification>) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

ToolSpecifications - Class in dev.langchain4j.agent.tool

Utility methods for ToolSpecifications.

toolSpecificationsFrom(Class<?>) - Static method in class dev.langchain4j.agent.tool.ToolSpecifications

Returns ToolSpecifications for all methods annotated with @Tool within the specified class.

toolSpecificationsFrom(Object) - Static method in class dev.langchain4j.agent.tool.ToolSpecifications

Returns ToolSpecifications for all methods annotated with @Tool within the class of the specified object.

topK() - Method in class dev.langchain4j.model.chat.request.ChatRequest

topK() - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

topK() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

topK(Integer) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

topK(Integer) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

topP() - Method in class dev.langchain4j.model.chat.request.ChatRequest

topP() - Method in interface dev.langchain4j.model.chat.request.ChatRequestParameters

topP() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

topP(Double) - Method in class dev.langchain4j.model.chat.request.ChatRequest.Builder

topP(Double) - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters.Builder

toPrompt(Object) - Static method in class dev.langchain4j.model.input.structured.StructuredPromptProcessor

Converts the given structured prompt to a prompt.

toPrompt(Object) - Method in interface dev.langchain4j.spi.prompt.structured.StructuredPromptFactory

Converts the given structured prompt to a prompt.

toString() - Method in class dev.langchain4j.agent.tool.ToolExecutionRequest

toString() - Method in class dev.langchain4j.agent.tool.ToolSpecification

toString() - Method in class dev.langchain4j.data.audio.Audio

toString() - Method in class dev.langchain4j.data.document.DefaultDocument

toString() - Method in class dev.langchain4j.data.document.Metadata

toString() - Method in class dev.langchain4j.data.embedding.Embedding

toString() - Method in class dev.langchain4j.data.image.Image

toString() - Method in class dev.langchain4j.data.message.AiMessage

toString() - Method in class dev.langchain4j.data.message.AudioContent

toString() - Method in class dev.langchain4j.data.message.CustomMessage

toString() - Method in class dev.langchain4j.data.message.ImageContent

toString() - Method in class dev.langchain4j.data.message.PdfFileContent

toString() - Method in class dev.langchain4j.data.message.SystemMessage

toString() - Method in class dev.langchain4j.data.message.TextContent

toString() - Method in class dev.langchain4j.data.message.ToolExecutionResultMessage

toString() - Method in class dev.langchain4j.data.message.UserMessage

toString() - Method in class dev.langchain4j.data.message.VideoContent

toString() - Method in class dev.langchain4j.data.pdf.PdfFile

toString() - Method in class dev.langchain4j.data.segment.TextSegment

toString() - Method in class dev.langchain4j.data.video.Video

toString() - Method in class dev.langchain4j.model.chat.request.ChatRequest

toString() - Method in class dev.langchain4j.model.chat.request.DefaultChatRequestParameters

toString() - Method in class dev.langchain4j.model.chat.request.json.JsonAnyOfSchema

toString() - Method in class dev.langchain4j.model.chat.request.json.JsonArraySchema

toString() - Method in class dev.langchain4j.model.chat.request.json.JsonBooleanSchema

toString() - Method in class dev.langchain4j.model.chat.request.json.JsonEnumSchema

toString() - Method in class dev.langchain4j.model.chat.request.json.JsonIntegerSchema

toString() - Method in class dev.langchain4j.model.chat.request.json.JsonNumberSchema

toString() - Method in class dev.langchain4j.model.chat.request.json.JsonObjectSchema

toString() - Method in class dev.langchain4j.model.chat.request.json.JsonReferenceSchema

toString() - Method in class dev.langchain4j.model.chat.request.json.JsonSchema

toString() - Method in class dev.langchain4j.model.chat.request.json.JsonStringSchema

toString() - Method in class dev.langchain4j.model.chat.request.ResponseFormat

toString() - Method in class dev.langchain4j.model.chat.response.ChatResponse

toString() - Method in class dev.langchain4j.model.chat.response.ChatResponseMetadata

toString() - Method in class dev.langchain4j.model.input.Prompt

toString() - Method in class dev.langchain4j.model.moderation.Moderation

toString() - Method in class dev.langchain4j.model.output.Response

toString() - Method in class dev.langchain4j.model.output.TokenUsage

toString() - Method in class dev.langchain4j.rag.content.DefaultContent

toString() - Method in class dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever

toString() - Method in class dev.langchain4j.rag.query.Metadata

toString() - Method in class dev.langchain4j.rag.query.Query

toString() - Method in class dev.langchain4j.store.embedding.EmbeddingMatch

toString() - Method in class dev.langchain4j.store.embedding.EmbeddingSearchRequest

toString() - Method in class dev.langchain4j.store.embedding.filter.comparison.ContainsString

toString() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsEqualTo

toString() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThan

toString() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsGreaterThanOrEqualTo

toString() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsIn

toString() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThan

toString() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsLessThanOrEqualTo

toString() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotEqualTo

toString() - Method in class dev.langchain4j.store.embedding.filter.comparison.IsNotIn

toString() - Method in class dev.langchain4j.store.embedding.filter.logical.And

toString() - Method in class dev.langchain4j.store.embedding.filter.logical.Not

toString() - Method in class dev.langchain4j.store.embedding.filter.logical.Or

toString() - Method in class dev.langchain4j.web.search.WebSearchInformationResult

toString() - Method in class dev.langchain4j.web.search.WebSearchOrganicResult

toString() - Method in class dev.langchain4j.web.search.WebSearchRequest

toString() - Method in class dev.langchain4j.web.search.WebSearchResults

toStringValueMap(Map<String, Object>) - Static method in class dev.langchain4j.internal.Utils

toSystemMessage() - Method in class dev.langchain4j.model.input.Prompt

Convert this prompt to a SystemMessage.

totalResults() - Method in class dev.langchain4j.web.search.WebSearchInformationResult

Gets the total number of results.

totalTokenCount() - Method in class dev.langchain4j.model.output.TokenUsage

Returns the total token count, or null if unknown.

toTextSegment() - Method in interface dev.langchain4j.data.document.Document

Builds a TextSegment from this document.

toTextSegment() - Method in class dev.langchain4j.web.search.WebSearchOrganicResult

Converts this WebSearchOrganicResult to a TextSegment.

toTextSegments() - Method in class dev.langchain4j.web.search.WebSearchResults

Converts the organic search results to a list of text segments.

toUserMessage() - Method in class dev.langchain4j.model.input.Prompt

Convert this prompt to a UserMessage.

toUserMessage(String) - Method in class dev.langchain4j.model.input.Prompt

Convert this prompt to a UserMessage with specified userName.

transform(Document) - Method in interface dev.langchain4j.data.document.DocumentTransformer

Transforms a provided document.

transform(TextSegment) - Method in interface dev.langchain4j.data.segment.TextSegmentTransformer

Transforms a provided segment.

transform(Query) - Method in class dev.langchain4j.rag.query.transformer.CompressingQueryTransformer

transform(Query) - Method in class dev.langchain4j.rag.query.transformer.DefaultQueryTransformer

transform(Query) - Method in class dev.langchain4j.rag.query.transformer.ExpandingQueryTransformer

transform(Query) - Method in interface dev.langchain4j.rag.query.transformer.QueryTransformer

Transforms the given Query into one or multiple Querys.

transformAll(List<Document>) - Method in interface dev.langchain4j.data.document.DocumentTransformer

Transforms all the provided documents.

transformAll(List<TextSegment>) - Method in interface dev.langchain4j.data.segment.TextSegmentTransformer

Transforms all the provided segments.

type() - Method in class dev.langchain4j.data.message.AiMessage

type() - Method in class dev.langchain4j.data.message.AudioContent

type() - Method in interface dev.langchain4j.data.message.ChatMessage

The type of the message.

type() - Method in interface dev.langchain4j.data.message.Content

Returns the type of content.

type() - Method in class dev.langchain4j.data.message.CustomMessage

type() - Method in class dev.langchain4j.data.message.ImageContent

type() - Method in class dev.langchain4j.data.message.PdfFileContent

type() - Method in class dev.langchain4j.data.message.SystemMessage

type() - Method in class dev.langchain4j.data.message.TextContent

type() - Method in class dev.langchain4j.data.message.ToolExecutionResultMessage

type() - Method in class dev.langchain4j.data.message.UserMessage

type() - Method in class dev.langchain4j.data.message.VideoContent

type() - Method in class dev.langchain4j.model.chat.request.ResponseFormat

type(ResponseFormatType) - Method in class dev.langchain4j.model.chat.request.ResponseFormat.Builder

U

UnresolvedModelServerException - Exception Class in dev.langchain4j.exception

UnresolvedModelServerException(String) - Constructor for exception class dev.langchain4j.exception.UnresolvedModelServerException

UnresolvedModelServerException(String, Throwable) - Constructor for exception class dev.langchain4j.exception.UnresolvedModelServerException

UnresolvedModelServerException(Throwable) - Constructor for exception class dev.langchain4j.exception.UnresolvedModelServerException

UnsupportedFeatureException - Exception Class in dev.langchain4j.exception

UnsupportedFeatureException(String) - Constructor for exception class dev.langchain4j.exception.UnsupportedFeatureException

updateMessages(Object, List<ChatMessage>) - Method in interface dev.langchain4j.store.memory.chat.ChatMemoryStore

Updates messages for a specified chat memory.

updateMessages(Object, List<ChatMessage>) - Method in class dev.langchain4j.store.memory.chat.InMemoryChatMemoryStore

url() - Method in class dev.langchain4j.data.audio.Audio

Get the url of the audio.

url() - Method in class dev.langchain4j.data.image.Image

Get the url of the image.

url() - Method in class dev.langchain4j.data.pdf.PdfFile

Get the url of the PDF.

url() - Method in class dev.langchain4j.data.video.Video

Get the url of the video.

url() - Method in class dev.langchain4j.web.search.WebSearchOrganicResult

Returns the URL associated with the web page.

url(String) - Method in class dev.langchain4j.data.audio.Audio.Builder

Set the url of the audio.

url(String) - Method in class dev.langchain4j.data.image.Image.Builder

Set the url of the image.

url(String) - Method in class dev.langchain4j.data.pdf.PdfFile.Builder

Set the url of the PDF document.

url(String) - Method in class dev.langchain4j.data.video.Video.Builder

Set the url of the video.

url(URI) - Method in class dev.langchain4j.data.audio.Audio.Builder

Set the url of the audio.

url(URI) - Method in class dev.langchain4j.data.image.Image.Builder

Set the url of the image.

url(URI) - Method in class dev.langchain4j.data.pdf.PdfFile.Builder

Set the url of the PDF document.

url(URI) - Method in class dev.langchain4j.data.video.Video.Builder

Set the url of the video.

URL - Static variable in interface dev.langchain4j.data.document.Document

Common metadata key for the URL from which the document was loaded.

USER - Enum constant in enum class dev.langchain4j.data.message.ChatMessageType

A message from the user.

userMessage(Content...) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from contents.

userMessage(String) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from a text.

userMessage(String, Content...) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from a name and contents.

userMessage(String, String) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from a name and a text.

userMessage(String, List<Content>) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from a name and contents.

userMessage(List<Content>) - Static method in class dev.langchain4j.data.message.UserMessage

Create a UserMessage from contents.

UserMessage - Class in dev.langchain4j.data.message

Represents a message from a user, typically an end user of the application.

UserMessage(Content...) - Constructor for class dev.langchain4j.data.message.UserMessage

Creates a UserMessage from one or multiple Contents.

UserMessage(String) - Constructor for class dev.langchain4j.data.message.UserMessage

Creates a UserMessage from a text.

UserMessage(String, Content...) - Constructor for class dev.langchain4j.data.message.UserMessage

Creates a UserMessage from a name and one or multiple Contents.

UserMessage(String, String) - Constructor for class dev.langchain4j.data.message.UserMessage

Creates a UserMessage from a name and a text.

UserMessage(String, List<Content>) - Constructor for class dev.langchain4j.data.message.UserMessage

Creates a UserMessage from a name and a list of Contents.

UserMessage(List<Content>) - Constructor for class dev.langchain4j.data.message.UserMessage

Creates a UserMessage from a list of Contents.

UserMessage.Builder - Class in dev.langchain4j.data.message

Utils - Class in dev.langchain4j.internal

Utility methods.

V

validate(ResponseFormat) - Static method in class dev.langchain4j.internal.ChatRequestValidationUtils

validate(ToolChoice) - Static method in class dev.langchain4j.internal.ChatRequestValidationUtils

validate(List<ToolSpecification>) - Static method in class dev.langchain4j.internal.ChatRequestValidationUtils

validateMessages(List<ChatMessage>) - Static method in class dev.langchain4j.internal.ChatRequestValidationUtils

validateParameters(ChatRequestParameters) - Static method in class dev.langchain4j.internal.ChatRequestValidationUtils

validateSpecifications(List<ToolSpecification>) - Static method in class dev.langchain4j.agent.tool.ToolSpecifications

Validates all the ToolSpecifications.

validateStructuredPrompt(Object) - Static method in class dev.langchain4j.model.input.structured.StructuredPrompt.Util

Validates that the given object is annotated with StructuredPrompt.

ValidationUtils - Class in dev.langchain4j.internal

Utility class for validating method arguments.

value() - Element in annotation interface dev.langchain4j.agent.tool.P

Description of a parameter

value() - Element in annotation interface dev.langchain4j.agent.tool.Tool

Description of the tool.

value() - Element in annotation interface dev.langchain4j.model.input.structured.StructuredPrompt

Prompt template can be defined in one line or multiple lines.

value() - Element in annotation interface dev.langchain4j.model.output.structured.Description

The description can be defined in one line or multiple lines.

valueOf(String) - Static method in enum class dev.langchain4j.data.message.ChatMessageType

Returns the enum constant of this class with the specified name.

valueOf(String) - Static method in enum class dev.langchain4j.data.message.ContentType

Returns the enum constant of this class with the specified name.

valueOf(String) - Static method in enum class dev.langchain4j.data.message.ImageContent.DetailLevel

Returns the enum constant of this class with the specified name.

valueOf(String) - Static method in enum class dev.langchain4j.model.chat.Capability

Returns the enum constant of this class with the specified name.

valueOf(String) - Static method in enum class dev.langchain4j.model.chat.request.ResponseFormatType

Returns the enum constant of this class with the specified name.

valueOf(String) - Static method in enum class dev.langchain4j.model.chat.request.ToolChoice

Returns the enum constant of this class with the specified name.

valueOf(String) - Static method in enum class dev.langchain4j.model.ModelProvider

Returns the enum constant of this class with the specified name.

valueOf(String) - Static method in enum class dev.langchain4j.model.output.FinishReason

Returns the enum constant of this class with the specified name.

valueOf(String) - Static method in enum class dev.langchain4j.rag.content.ContentMetadata

Returns the enum constant of this class with the specified name.

valueOf(String) - Static method in enum class dev.langchain4j.rag.query.router.LanguageModelQueryRouter.FallbackStrategy

Returns the enum constant of this class with the specified name.

values() - Static method in enum class dev.langchain4j.data.message.ChatMessageType

Returns an array containing the constants of this enum class, in the order they are declared.

values() - Static method in enum class dev.langchain4j.data.message.ContentType

Returns an array containing the constants of this enum class, in the order they are declared.

values() - Static method in enum class dev.langchain4j.data.message.ImageContent.DetailLevel

Returns an array containing the constants of this enum class, in the order they are declared.

values() - Static method in enum class dev.langchain4j.model.chat.Capability

Returns an array containing the constants of this enum class, in the order they are declared.

values() - Static method in enum class dev.langchain4j.model.chat.request.ResponseFormatType

Returns an array containing the constants of this enum class, in the order they are declared.

values() - Static method in enum class dev.langchain4j.model.chat.request.ToolChoice

Returns an array containing the constants of this enum class, in the order they are declared.

values() - Static method in enum class dev.langchain4j.model.ModelProvider

Returns an array containing the constants of this enum class, in the order they are declared.

values() - Static method in enum class dev.langchain4j.model.output.FinishReason

Returns an array containing the constants of this enum class, in the order they are declared.

values() - Static method in enum class dev.langchain4j.rag.content.ContentMetadata

Returns an array containing the constants of this enum class, in the order they are declared.

values() - Static method in enum class dev.langchain4j.rag.query.router.LanguageModelQueryRouter.FallbackStrategy

Returns an array containing the constants of this enum class, in the order they are declared.

vector() - Method in class dev.langchain4j.data.embedding.Embedding

Returns the vector.

vectorAsList() - Method in class dev.langchain4j.data.embedding.Embedding

Returns a copy of the vector as a list.

video() - Method in class dev.langchain4j.data.message.VideoContent

Get the Video.

Video - Class in dev.langchain4j.data.video

VIDEO - Enum constant in enum class dev.langchain4j.data.message.ContentType

Video content.

Video.Builder - Class in dev.langchain4j.data.video

Builder for Video.

VideoContent - Class in dev.langchain4j.data.message

VideoContent(Video) - Constructor for class dev.langchain4j.data.message.VideoContent

Create a new VideoContent from the given video.

VideoContent(String) - Constructor for class dev.langchain4j.data.message.VideoContent

Create a new VideoContent from the given url.

VideoContent(String, String) - Constructor for class dev.langchain4j.data.message.VideoContent

Create a new VideoContent from the given base64 data and mime type.

VideoContent(URI) - Constructor for class dev.langchain4j.data.message.VideoContent

Create a new VideoContent from the given url.

VirtualThreadUtils - Class in dev.langchain4j.internal

Utility class for working with virtual threads introduced in Java 21.

VirtualThreadUtils() - Constructor for class dev.langchain4j.internal.VirtualThreadUtils

VisitedClassMetadata(JsonSchemaElement, String, boolean) - Constructor for class dev.langchain4j.internal.JsonSchemaElementUtils.VisitedClassMetadata

W

WebSearchContentRetriever - Class in dev.langchain4j.rag.content.retriever

A ContentRetriever that retrieves relevant Content from the web using a WebSearchEngine.

WebSearchContentRetriever(WebSearchEngine, Integer) - Constructor for class dev.langchain4j.rag.content.retriever.WebSearchContentRetriever

WebSearchContentRetriever.WebSearchContentRetrieverBuilder - Class in dev.langchain4j.rag.content.retriever

webSearchEngine(WebSearchEngine) - Method in class dev.langchain4j.rag.content.retriever.WebSearchContentRetriever.WebSearchContentRetrieverBuilder

WebSearchEngine - Interface in dev.langchain4j.web.search

Represents a web search engine that can be used to perform searches on the Web in response to a user query.

WebSearchInformationResult - Class in dev.langchain4j.web.search

Represents general information about the web search performed.

WebSearchInformationResult(Long) - Constructor for class dev.langchain4j.web.search.WebSearchInformationResult

Constructs a new WebSearchInformationResult with the specified total results.

WebSearchInformationResult(Long, Integer, Map<String, Object>) - Constructor for class dev.langchain4j.web.search.WebSearchInformationResult

Constructs a new WebSearchInformationResult with the specified total results, page number, and metadata.

WebSearchOrganicResult - Class in dev.langchain4j.web.search

Represents an organic search results are the web pages that are returned by the search engine in response to a search query.

WebSearchOrganicResult(String, URI) - Constructor for class dev.langchain4j.web.search.WebSearchOrganicResult

Constructs a WebSearchOrganicResult object with the given title and URL.

WebSearchOrganicResult(String, URI, String, String) - Constructor for class dev.langchain4j.web.search.WebSearchOrganicResult

Constructs a WebSearchOrganicResult object with the given title, URL, snippet and/or content.

WebSearchOrganicResult(String, URI, String, String, Map<String, String>) - Constructor for class dev.langchain4j.web.search.WebSearchOrganicResult

Constructs a WebSearchOrganicResult object with the given title, URL, snippet and/or content, and metadata.

WebSearchRequest - Class in dev.langchain4j.web.search

Represents a search request that can be made by the user to perform searches in any implementation of WebSearchEngine.

WebSearchRequest.Builder - Class in dev.langchain4j.web.search

WebSearchResults - Class in dev.langchain4j.web.search

Represents the response of a web search performed.

WebSearchResults(WebSearchInformationResult, List<WebSearchOrganicResult>) - Constructor for class dev.langchain4j.web.search.WebSearchResults

Constructs a new instance of WebSearchResults.

WebSearchResults(Map<String, Object>, WebSearchInformationResult, List<WebSearchOrganicResult>) - Constructor for class dev.langchain4j.web.search.WebSearchResults

Constructs a new instance of WebSearchResults.

WebSearchTool - Class in dev.langchain4j.web.search

WebSearchTool(WebSearchEngine) - Constructor for class dev.langchain4j.web.search.WebSearchTool

withExceptionMapper(Callable<T>) - Method in interface dev.langchain4j.internal.ExceptionMapper

withRetry(Runnable, int) - Static method in class dev.langchain4j.internal.RetryUtils

This method attempts to execute a given action up to a specified number of times with an exponential backoff.

withRetry(Callable<T>) - Method in class dev.langchain4j.internal.RetryUtils.RetryPolicy

This method attempts to execute a given action up to 3 times with an exponential backoff.

withRetry(Callable<T>) - Static method in class dev.langchain4j.internal.RetryUtils

This method attempts to execute a given action up to 3 times with an exponential backoff.

withRetry(Callable<T>, int) - Method in class dev.langchain4j.internal.RetryUtils.RetryPolicy

This method attempts to execute a given action up to a specified number of times with an exponential backoff.

withRetry(Callable<T>, int) - Static method in class dev.langchain4j.internal.RetryUtils

This method attempts to execute a given action up to a specified number of times with an exponential backoff.

withRetryMappingExceptions(Callable<T>) - Static method in class dev.langchain4j.internal.RetryUtils

This method attempts to execute a given action up to 3 times with an exponential backoff.

withRetryMappingExceptions(Callable<T>, int) - Static method in class dev.langchain4j.internal.RetryUtils

This method attempts to execute a given action up to a specified number of times with an exponential backoff.

withRetryMappingExceptions(Callable<T>, int, ExceptionMapper) - Static method in class dev.langchain4j.internal.RetryUtils

This method attempts to execute a given action up to a specified number of times with an exponential backoff.

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