Package dev.langchain4j.memory

Interface ChatMemory

All Known Implementing Classes:
MessageWindowChatMemory, TokenWindowChatMemory
public interface ChatMemory
Represents the memory (history) of a chat conversation. Since language models do not keep the state of the conversation, it is necessary to provide all previous messages on every interaction with the language model. ChatMemory helps with keeping track of the conversation and ensuring that messages fit within language model's context window.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    add(ChatMessage message)
    Adds a message to the chat memory.
    void
    clear()
    Clears the chat memory.
    Object
    id()
    The ID of the ChatMemory.
    List<ChatMessage>
    messages()
    Retrieves messages from the chat memory.

  • Method Details

    • id

      Object id()
      The ID of the ChatMemory.
      Returns:
      The ID of the ChatMemory.

    • add

      void add(ChatMessage message)
      Adds a message to the chat memory.
      Parameters:
      message - The ChatMessage to add.

    • messages

      List<ChatMessage> messages()
      Retrieves messages from the chat memory. Depending on the implementation, it may not return all previously added messages, but rather a subset, a summary, or a combination thereof.
      Returns:
      A list of ChatMessage objects that represent the current state of the chat memory.

    • clear

      void clear()
      Clears the chat memory.