Class DynamoDBChatMessageHistory

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

Hierarchy

BaseListChatMessageHistory
- DynamoDBChatMessageHistory

Index

Constructors

Methods

addAIChatMessage addMessage addUserMessage clear getMessages toJSON toJSONNotImplemented

Constructors

constructor

new DynamoDBChatMessageHistory(__namedParameters): DynamoDBChatMessageHistory
Parameters
- __namedParameters: DynamoDBChatMessageHistoryFields
Returns DynamoDBChatMessageHistory
Overrides BaseListChatMessageHistory.constructor
- Defined in docs/api_refs/langchain/src/stores/message/dynamodb.ts:89

Methods

addAIChatMessage

addAIChatMessage(message): Promise<void>
Parameters
- message: string
Returns Promise<void>
Inherited from BaseListChatMessageHistory.addAIChatMessage
- Defined in docs/api_refs/langchain/src/schema/index.ts:895

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>
Overrides BaseListChatMessageHistory.addMessage
- Defined in docs/api_refs/langchain/src/stores/message/dynamodb.ts:163

addUserMessage

addUserMessage(message): Promise<void>
Parameters
- message: string
Returns Promise<void>
Inherited from BaseListChatMessageHistory.addUserMessage
- Defined in docs/api_refs/langchain/src/schema/index.ts:891

clear

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

Returns Promise<void>
- Defined in docs/api_refs/langchain/src/stores/message/dynamodb.ts:151

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 docs/api_refs/langchain/src/stores/message/dynamodb.ts:123

toJSON

toJSON(): Serialized
Returns Serialized
Inherited from BaseListChatMessageHistory.toJSON
- Defined in docs/api_refs/langchain/src/load/serializable.ts:148

toJSONNotImplemented

toJSONNotImplemented(): SerializedNotImplemented
Returns SerializedNotImplemented
Inherited from BaseListChatMessageHistory.toJSONNotImplemented
- Defined in docs/api_refs/langchain/src/load/serializable.ts:222

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