A B C D E F G H I J K L M N O P Q R S T U V W

A

add(String, Object) - Method in class dev.langchain4j.data.document.Metadata

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

Adds a message to the chat memory.

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

Adds a given embedding to the store.

add(String, 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.

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.

addOptionalParameter(String, JsonSchemaProperty...) - Method in class dev.langchain4j.agent.tool.ToolSpecification.Builder

addOptionalParameter(String, Iterable<JsonSchemaProperty>) - Method in class dev.langchain4j.agent.tool.ToolSpecification.Builder

addParameter(String, JsonSchemaProperty...) - Method in class dev.langchain4j.agent.tool.ToolSpecification.Builder

addParameter(String, Iterable<JsonSchemaProperty>) - Method in class dev.langchain4j.agent.tool.ToolSpecification.Builder

AiMessage - Class in dev.langchain4j.data.message

Represents a response message from an AI (LLM).

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

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

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

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

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.

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

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

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

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

ARRAY - Static variable in class dev.langchain4j.agent.tool.JsonSchemaProperty

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

B

BOOLEAN - Static variable in class dev.langchain4j.agent.tool.JsonSchemaProperty

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

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

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

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

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

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

C

Chain<Input,Output> - Interface in dev.langchain4j.chain

ChatLanguageModel - Interface in dev.langchain4j.model.chat

Represents a LLM that has a chat interface.

ChatMemory - Interface in dev.langchain4j.memory

Represents the memory (history) of a chat conversation.

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

Represents a store for the ChatMemory state.

ChatMessage - Class in dev.langchain4j.data.message

ChatMessageDeserializer - Class in dev.langchain4j.data.message

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

ChatMessageSerializer - Class in dev.langchain4j.data.message

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

ChatMessageType - Enum in dev.langchain4j.data.message

classOf(ChatMessageType) - Static method in enum dev.langchain4j.data.message.ChatMessageType

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

Clears the chat memory.

CodeExecutionEngine - Interface in dev.langchain4j.code

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

cosine(float[], float[]) - Static method in class dev.langchain4j.store.embedding.RelevanceScore

Calculates the relevance score between two vectors using cosine similarity.

cosine(float[], float[]) - Static method in class dev.langchain4j.store.embedding.Similarity

Calculates cosine similarity between two vectors.

D

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

description(String) - Static method in class dev.langchain4j.agent.tool.JsonSchemaProperty

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

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

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

dev.langchain4j - package dev.langchain4j

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

dev.langchain4j.chain - package dev.langchain4j.chain

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

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

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

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

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

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.embedding - package dev.langchain4j.model.embedding

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.retriever - package dev.langchain4j.retriever

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

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

Document - Class in dev.langchain4j.data.document

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

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

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

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

DOCUMENT_TYPE - Static variable in interface dev.langchain4j.data.document.DocumentParser

DocumentParser - Interface in dev.langchain4j.data.document

Defines the interface for parsing an InputStream into a Document.

DocumentSource - Interface in dev.langchain4j.data.document

Defines the interface for a Document source.

DocumentSplitter - Interface in dev.langchain4j.data.document

Defines the interface for splitting a document into text segments.

DocumentTransformer - Interface in dev.langchain4j.data.document

Defines the interface for transforming a Document.

E

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

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

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

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

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

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

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

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

EmbeddingModel - Interface in dev.langchain4j.model.embedding

Represents a LLM that generates an embedding for a given text.

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

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

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

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

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

enums(String...) - Static method in class dev.langchain4j.agent.tool.JsonSchemaProperty

enums(Object...) - Static method in class dev.langchain4j.agent.tool.JsonSchemaProperty

enums(Class<?>) - Static method in class dev.langchain4j.agent.tool.JsonSchemaProperty

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

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

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

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

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

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.message.AiMessage

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

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.segment.TextSegment

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.store.embedding.EmbeddingMatch

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

estimateTokenCount(UserMessage) - Method in interface dev.langchain4j.model.chat.TokenCountEstimator

estimateTokenCount(Prompt) - Method in interface dev.langchain4j.model.chat.TokenCountEstimator

estimateTokenCount(Object) - Method in interface dev.langchain4j.model.chat.TokenCountEstimator

estimateTokenCount(TextSegment) - Method in interface dev.langchain4j.model.chat.TokenCountEstimator

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

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

estimateTokenCount(TextSegment) - Method in interface dev.langchain4j.model.embedding.TokenCountEstimator

estimateTokenCount(List<TextSegment>) - Method in interface dev.langchain4j.model.embedding.TokenCountEstimator

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

estimateTokenCount(Prompt) - Method in interface dev.langchain4j.model.language.TokenCountEstimator

estimateTokenCount(Object) - Method in interface dev.langchain4j.model.language.TokenCountEstimator

estimateTokenCount(TextSegment) - Method in interface dev.langchain4j.model.language.TokenCountEstimator

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

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

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

estimateTokenCountInTools(Object) - Method in interface dev.langchain4j.model.Tokenizer

estimateTokenCountInTools(Iterable<Object>) - Method in interface dev.langchain4j.model.Tokenizer

estimateTokenCountInToolSpecification(ToolSpecification) - Method in interface dev.langchain4j.model.Tokenizer

estimateTokenCountInToolSpecifications(Iterable<ToolSpecification>) - Method in interface dev.langchain4j.model.Tokenizer

Exceptions - Class in dev.langchain4j.internal

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

execute(Input) - Method in interface dev.langchain4j.chain.Chain

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

F

findRelevant(String) - Method in interface dev.langchain4j.retriever.Retriever

findRelevant(Embedding, int) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Finds the most relevant (closest in space) embeddings to the provided reference embedding.

findRelevant(Embedding, int, double) - Method in interface dev.langchain4j.store.embedding.EmbeddingStore

Finds the most relevant (closest in space) embeddings to the provided reference embedding.

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

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

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

formatInstructions() - Method in interface dev.langchain4j.model.output.OutputParser

from(String, Object) - Static method in class dev.langchain4j.agent.tool.JsonSchemaProperty

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

G

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

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

H

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

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

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

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

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

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.message.AiMessage

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

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.segment.TextSegment

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

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

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

I

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

illegalArgument(String, Object...) - Static method in class dev.langchain4j.internal.Exceptions

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

inputStream() - Method in interface dev.langchain4j.data.document.DocumentSource

Provides an InputStream to read the content of the document.

INTEGER - Static variable in class dev.langchain4j.agent.tool.JsonSchemaProperty

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

J

Json - Class in dev.langchain4j.internal

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

JsonSchemaProperty - Class in dev.langchain4j.agent.tool

JsonSchemaProperty(String, Object) - Constructor for class dev.langchain4j.agent.tool.JsonSchemaProperty

K

key() - Method in class dev.langchain4j.agent.tool.JsonSchemaProperty

L

LanguageModel - Interface in dev.langchain4j.model.language

Represents a LLM that has a simple text interface (as opposed to a chat interface).

M

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

messageFromJson(String) - Static method in class dev.langchain4j.data.message.ChatMessageDeserializer

Deserializes a JSON string into a ChatMessage.

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

Retrieves messages from the chat memory.

messagesFromJson(String) - Static method in class dev.langchain4j.data.message.ChatMessageDeserializer

Deserializes a JSON string into a list of ChatMessage.

messagesToJson(List<ChatMessage>) - Static method in class dev.langchain4j.data.message.ChatMessageSerializer

Serializes a list of chat messages into 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.Document

metadata() - Method in interface dev.langchain4j.data.document.DocumentSource

Returns the metadata associated with the source of the document.

Metadata - Class in dev.langchain4j.data.document

Represents metadata of a Document or a TextSegment.

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

Metadata(Map<String, String>) - Constructor for class dev.langchain4j.data.document.Metadata

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

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

MightChangeInTheFuture - Annotation Type in dev.langchain4j

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

moderate(String) - Method in interface dev.langchain4j.model.moderation.ModerationModel

moderate(Prompt) - Method in interface dev.langchain4j.model.moderation.ModerationModel

moderate(Object) - Method in interface dev.langchain4j.model.moderation.ModerationModel

moderate(ChatMessage) - Method in interface dev.langchain4j.model.moderation.ModerationModel

moderate(List<ChatMessage>) - Method in interface dev.langchain4j.model.moderation.ModerationModel

moderate(TextSegment) - Method in interface dev.langchain4j.model.moderation.ModerationModel

Moderation - Class in dev.langchain4j.model.moderation

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

Moderation(String) - Constructor for class dev.langchain4j.model.moderation.Moderation

ModerationModel - Interface in dev.langchain4j.model.moderation

N

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

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

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

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

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

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

NULL - Static variable in class dev.langchain4j.agent.tool.JsonSchemaProperty

NUMBER - Static variable in class dev.langchain4j.agent.tool.JsonSchemaProperty

O

OBJECT - Static variable in class dev.langchain4j.agent.tool.JsonSchemaProperty

onComplete() - Method in interface dev.langchain4j.model.StreamingResponseHandler

This method is invoked once LLM has finished responding.

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

This method is invoked each time LLM sends a token.

onToolArguments(String) - Method in interface dev.langchain4j.model.StreamingResponseHandler

This method is invoked each time LLM sends a token.

onToolName(String) - Method in interface dev.langchain4j.model.StreamingResponseHandler

This method is invoked when LLM decides to execute a tool.

OutputParser<T> - Interface in dev.langchain4j.model.output

P

P - Annotation Type in dev.langchain4j.agent.tool

Parameter of a Tool

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

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

parse(InputStream) - Method in interface dev.langchain4j.data.document.DocumentParser

Parses an InputStream into a Document.

parse(String) - Method in interface dev.langchain4j.model.output.OutputParser

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

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

process(Object) - Method in interface dev.langchain4j.model.language.LanguageModel

process(String, StreamingResponseHandler) - Method in interface dev.langchain4j.model.language.StreamingLanguageModel

process(Prompt, StreamingResponseHandler) - Method in interface dev.langchain4j.model.language.StreamingLanguageModel

process(Object, StreamingResponseHandler) - Method in interface dev.langchain4j.model.language.StreamingLanguageModel

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

PromptTemplate - Class in dev.langchain4j.model.input

Represents a template of a prompt that can be reused multiple times.

properties(Map<String, Map<String, Object>>) - Method in class dev.langchain4j.agent.tool.ToolParameters.Builder

properties() - Method in class dev.langchain4j.agent.tool.ToolParameters

property(String, Object) - Static method in class dev.langchain4j.agent.tool.JsonSchemaProperty

Q

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

R

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

RelevanceScore - Class in dev.langchain4j.store.embedding

RelevanceScore() - Constructor for class dev.langchain4j.store.embedding.RelevanceScore

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

required(List<String>) - Method in class dev.langchain4j.agent.tool.ToolParameters.Builder

required() - Method in class dev.langchain4j.agent.tool.ToolParameters

Retriever<T> - Interface in dev.langchain4j.retriever

S

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.

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

Sends a sequence of messages to the LLM and returns a response.

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

Sends a list of messages to the LLM and returns a response.

sendMessages(List<ChatMessage>, List<ToolSpecification>) - Method in interface dev.langchain4j.model.chat.ChatLanguageModel

Sends a list of messages and a list of tool specifications to the LLM and returns a response.

sendMessages(List<ChatMessage>, ToolSpecification) - Method in interface dev.langchain4j.model.chat.ChatLanguageModel

Sends a list of messages and a specification of a tool that must be executed to the LLM and returns a response that contains a request to execute specified tool.

sendMessages(List<ChatMessage>, StreamingResponseHandler) - Method in interface dev.langchain4j.model.chat.StreamingChatLanguageModel

sendMessages(List<ChatMessage>, List<ToolSpecification>, StreamingResponseHandler) - Method in interface dev.langchain4j.model.chat.StreamingChatLanguageModel

sendMessages(List<ChatMessage>, ToolSpecification, StreamingResponseHandler) - Method in interface dev.langchain4j.model.chat.StreamingChatLanguageModel

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

Sends a message from a user to the LLM and returns a response.

sendUserMessage(UserMessage) - Method in interface dev.langchain4j.model.chat.ChatLanguageModel

Sends a message from a user to the LLM and returns a response.

sendUserMessage(Object) - Method in interface dev.langchain4j.model.chat.ChatLanguageModel

Sends a structured prompt as a user message to the LLM and returns a response.

sendUserMessage(String, StreamingResponseHandler) - Method in interface dev.langchain4j.model.chat.StreamingChatLanguageModel

sendUserMessage(UserMessage, StreamingResponseHandler) - Method in interface dev.langchain4j.model.chat.StreamingChatLanguageModel

sendUserMessage(Object, StreamingResponseHandler) - Method in interface dev.langchain4j.model.chat.StreamingChatLanguageModel

Similarity - Class in dev.langchain4j.store.embedding

Similarity() - Constructor for class dev.langchain4j.store.embedding.Similarity

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.

StreamingChatLanguageModel - Interface in dev.langchain4j.model.chat

Represents a LLM that has a chat interface and can stream responses one token at a time.

StreamingLanguageModel - Interface in dev.langchain4j.model.language

Represents a LLM that has a simple text interface (as opposed to a chat interface) and can stream responses one token at a time.

StreamingResponseHandler - Interface in dev.langchain4j.model

STRING - Static variable in class dev.langchain4j.agent.tool.JsonSchemaProperty

StructuredPrompt - Annotation Type in dev.langchain4j.model.input.structured

StructuredPromptProcessor - Class in dev.langchain4j.model.input.structured

StructuredPromptProcessor() - Constructor for class dev.langchain4j.model.input.structured.StructuredPromptProcessor

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

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

T

text() - Method in class dev.langchain4j.data.document.Document

text - Variable in class dev.langchain4j.data.message.ChatMessage

text() - Method in class dev.langchain4j.data.message.ChatMessage

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

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

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

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

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

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

toJson(Object) - Static method in class dev.langchain4j.internal.Json

TokenCountEstimator - Interface in dev.langchain4j.model.chat

Represents an interface for estimating the count of tokens in various text types such as a text, message, prompt, text segment, etc.

TokenCountEstimator - Interface in dev.langchain4j.model.embedding

Represents an interface for estimating the count of tokens in various texts, text segments, etc.

TokenCountEstimator - Interface in dev.langchain4j.model.language

Represents an interface for estimating the count of tokens in various text types such as a text, prompt, text segment, etc.

Tokenizer - Interface in dev.langchain4j.model

Tool - Annotation Type in dev.langchain4j.agent.tool

Java methods annotated with @Tool are considered tools that LLM can use.

ToolExecutionRequest - Class in dev.langchain4j.agent.tool

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

ToolExecutionRequest.Builder - Class in dev.langchain4j.agent.tool

ToolExecutionResultMessage - Class in dev.langchain4j.data.message

Represents the result of a tool execution.

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

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

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

ToolParameters - Class in dev.langchain4j.agent.tool

ToolParameters.Builder - Class in dev.langchain4j.agent.tool

ToolSpecification - Class in dev.langchain4j.agent.tool

ToolSpecification.Builder - Class in dev.langchain4j.agent.tool

toolSpecificationFrom(Method) - Static method in class dev.langchain4j.agent.tool.ToolSpecifications

ToolSpecifications - Class in dev.langchain4j.agent.tool

ToolSpecifications() - Constructor for class dev.langchain4j.agent.tool.ToolSpecifications

toolSpecificationsFrom(Object) - Static method in class dev.langchain4j.agent.tool.ToolSpecifications

toPrompt(Object) - Static method in class dev.langchain4j.model.input.structured.StructuredPromptProcessor

toString() - Method in class dev.langchain4j.agent.tool.JsonSchemaProperty

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

toString() - Method in class dev.langchain4j.agent.tool.ToolParameters

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

toString() - Method in class dev.langchain4j.data.document.Document

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.message.AiMessage

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

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.segment.TextSegment

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

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

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

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

toTextSegment() - Method in class dev.langchain4j.data.document.Document

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

transform(Document) - Method in interface dev.langchain4j.data.document.DocumentTransformer

Transforms a provided document.

transformAll(List<Document>) - Method in interface dev.langchain4j.data.document.DocumentTransformer

Transforms all the provided documents.

type(String) - Static method in class dev.langchain4j.agent.tool.JsonSchemaProperty

type(String) - Method in class dev.langchain4j.agent.tool.ToolParameters.Builder

type() - Method in class dev.langchain4j.agent.tool.ToolParameters

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

type() - Method in class dev.langchain4j.data.message.ChatMessage

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

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

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

U

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

UserMessage - Class in dev.langchain4j.data.message

Represents a message from a user, typically an end user of the application.

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

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

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

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

Utils - Class in dev.langchain4j.internal

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

V

ValidationUtils - Class in dev.langchain4j.internal

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

value() - Method in class dev.langchain4j.agent.tool.JsonSchemaProperty

valueOf(String) - Static method in enum dev.langchain4j.data.message.ChatMessageType

Returns the enum constant of this type with the specified name.

values() - Static method in enum dev.langchain4j.data.message.ChatMessageType

Returns an array containing the constants of this enum type, in the order they are declared.

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

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

W

WillChangeSoon - Annotation Type in dev.langchain4j

Indicates that a class/constructor/method is planned to change soon.

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