InMemoryChatMemoryStore

All Implemented Interfaces:

dev.langchain4j.store.memory.chat.ChatMemoryStore
```
public class InMemoryChatMemoryStore
 implements ChatMemoryStore
                    
```
Implementation of ChatMemoryStore that stores state of dev.langchain4j.memory.ChatMemory (chat messages) in-memory.
This storage mechanism is transient and does not persist data across application restarts.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description

Constructor Summary

Constructors
Constructor	Description
`InMemoryChatMemoryStore()`	Constructs a new InMemoryChatMemoryStore.

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`List<ChatMessage>`	`getMessages(Object memoryId)`	Retrieves messages for a specified chat memory.
`void`	`updateMessages(Object memoryId, List<ChatMessage> messages)`	Updates messages for a specified chat memory.
`void`	`deleteMessages(Object memoryId)`	Deletes all messages for a specified chat memory.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - InMemoryChatMemoryStore
```
InMemoryChatMemoryStore()
```
    Constructs a new InMemoryChatMemoryStore.
- Method Detail
  - getMessages
```
 List<ChatMessage> getMessages(Object memoryId)
```
    Retrieves messages for a specified chat memory.
    
    Parameters:
    
    memoryId - The ID of the chat memory.
    
    Returns:
    
    List of messages for the specified chat memory. Must not be null. Can be deserialized from JSON using ChatMessageDeserializer.
  - updateMessages
```
 void updateMessages(Object memoryId, List<ChatMessage> messages)
```
    Updates messages for a specified chat memory.
    
    Parameters:
    
    memoryId - The ID of the chat memory.
    
    messages - List of messages for the specified chat memory, that represent the current state of the ChatMemory.
  - deleteMessages
```
 void deleteMessages(Object memoryId)
```
    Deletes all messages for a specified chat memory.
    
    Parameters:
    
    memoryId - The ID of the chat memory.