Class Context.Summarizer

java.lang.Object

dev.langchain4j.agentic.internal.Context.AgenticScopeContextGenerator

dev.langchain4j.agentic.internal.Context.Summarizer

All Implemented Interfaces:

UserMessageTransformer, BiFunction<ChatRequest, Object, ChatRequest>

Enclosing class:

Context

public static class Context.Summarizer
extends Context.AgenticScopeContextGenerator

Constructor Summary

Constructors

Constructor	Description
Summarizer(AgenticScope agenticScope, ChatModel chatModel, String... agentNames)	Creates a summarizer that eagerly builds its own summarizer AI service from the given ChatModel.

Method Summary

Modifier and Type	Method	Description
static Context.Summarizer	withChatModelProvider(AgenticScope agenticScope, Function<AgenticScope, ChatModel> chatModelProvider, String... agentNames)	Creates a summarizer whose ChatModel is resolved through the given provider at summarization time, so it follows model changes across scopes or invocations.
static Context.Summarizer	withSummarizer(AgenticScope agenticScope, Context.ContextSummarizer summarizer, String... agentNames)	Creates a summarizer backed by a pre-built Context.ContextSummarizer, typically one shared by the caller across agents or invocations using the same ChatModel.

Methods inherited from class Context.AgenticScopeContextGenerator

transformUserMessage

Methods inherited from class Object

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

Methods inherited from interface BiFunction

andThen

Methods inherited from interface UserMessageTransformer

apply

Constructor Details

Summarizer

public Summarizer(AgenticScope agenticScope,
 ChatModel chatModel,
 String... agentNames)

Creates a summarizer that eagerly builds its own summarizer AI service from the given ChatModel.

Throws:

IllegalConfigurationException - if chatModel is null

Method Details

withSummarizer

public static Context.Summarizer withSummarizer(AgenticScope agenticScope,
 Context.ContextSummarizer summarizer,
 String... agentNames)

Creates a summarizer backed by a pre-built Context.ContextSummarizer, typically one shared by the caller across agents or invocations using the same ChatModel.

withChatModelProvider

public static Context.Summarizer withChatModelProvider(AgenticScope agenticScope,
 Function<AgenticScope, ChatModel> chatModelProvider,
 String... agentNames)

Creates a summarizer whose ChatModel is resolved through the given provider at summarization time, so it follows model changes across scopes or invocations. The service built for the last resolved model is cached per summarizer instance.