Package dev.langchain4j.model

Class LambdaStreamingResponseHandler

java.lang.Object

dev.langchain4j.model.LambdaStreamingResponseHandler

public class LambdaStreamingResponseHandler
extends Object

Utility class with lambda-based streaming response handlers.

Lets you use Java lambda functions to receive onPartialResponse and onError events, from your streaming chat model, instead of creating an anonymous inner class implementing StreamingChatResponseHandler.

Example:

 import static dev.langchain4j.model.LambdaStreamingResponseHandler.*;

 model.chat("Why is the sky blue?",
       onPartialResponse(text -> System.out.println(text));
 model.chat("Why is the sky blue?",
       onPartialResponse(System.out::println);
 model.chat("Why is the sky blue?",
       onPartialResponseAndError(System.out::println, Throwable::printStackTrace));
 

See Also:

• StreamingChatResponseHandler.onPartialResponse(String)
• StreamingChatResponseHandler.onError(Throwable)

Constructor Summary

Constructors

Constructor	Description
LambdaStreamingResponseHandler()

Method Summary

Modifier and Type	Method	Description
static StreamingChatResponseHandler	onPartialResponse(Consumer<String> onPartialResponse)
static StreamingChatResponseHandler	onPartialResponseAndError(Consumer<String> onPartialResponseLambda, Consumer<Throwable> onErrorLambda)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

LambdaStreamingResponseHandler

public LambdaStreamingResponseHandler()

Method Details

onPartialResponse

public static StreamingChatResponseHandler onPartialResponse(Consumer<String> onPartialResponse)

onPartialResponseAndError

public static StreamingChatResponseHandler onPartialResponseAndError(Consumer<String> onPartialResponseLambda,
 Consumer<Throwable> onErrorLambda)