Class DynamoDBChatMessageHistory

Class providing methods to interact with a DynamoDB table to store and retrieve chat messages. It extends the BaseListChatMessageHistory class.

Hierarchy (view full)

Toolkit
- DynamoDBChatMessageHistory

Index

Constructors

Methods

addMessage addMessages clear getMessages

Constructors

constructor

new DynamoDBChatMessageHistory(__namedParameters): DynamoDBChatMessageHistory
Parameters
- __namedParameters: DynamoDBChatMessageHistoryFields
Returns DynamoDBChatMessageHistory
Overrides BaseListChatMessageHistory.constructor
- Defined in libs/langchain-community/src/stores/message/dynamodb.ts:127

Methods

addMessage

addMessage(message): Promise<void>
Adds a new message to the DynamoDB table.
Parameters
- message: BaseMessage
  The message to be added to the DynamoDB table.
Returns Promise<void>
- Defined in libs/langchain-community/src/stores/message/dynamodb.ts:212

addMessages

addMessages(messages): Promise<void>
Adds new messages to the DynamoDB table.
Parameters
- messages: BaseMessage[]
  The messages to be added to the DynamoDB table.
Returns Promise<void>
- Defined in libs/langchain-community/src/stores/message/dynamodb.ts:244

clear

clear(): Promise<void>
Deletes all messages from the DynamoDB table.

Returns Promise<void>
- Defined in libs/langchain-community/src/stores/message/dynamodb.ts:278

getMessages

getMessages(): Promise<BaseMessage[]>
Retrieves all messages from the DynamoDB table and returns them as an array of BaseMessage instances.

Returns Promise<BaseMessage[]>
Array of stored messages
- Defined in libs/langchain-community/src/stores/message/dynamodb.ts:161