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 addAIMessage addMessage addMessages addUserMessage clear getMessages toJSON toJSONNotImplemented

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

addAIChatMessage

addAIChatMessage(message): Promise<void>
Parameters
- message: string
Returns Promise<void>
Deprecated
Use addAIMessage instead
Inherited from BaseListChatMessageHistory.addAIChatMessage
- Defined in langchain-core/dist/chat_history.d.ts:43

addAIMessage

addAIMessage(message): Promise<void>
This is a convenience method for adding an AI message string to the store. Please note that this is a convenience method. Code should favor the bulk addMessages interface instead to save on round-trips to the underlying persistence layer. This method may be deprecated in a future release.
Parameters
- message: string
Returns Promise<void>
Inherited from BaseListChatMessageHistory.addAIMessage
- Defined in langchain-core/dist/chat_history.d.ts:51

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 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>
Overrides BaseListChatMessageHistory.addMessages
- Defined in libs/langchain-community/src/stores/message/dynamodb.ts:244

addUserMessage

addUserMessage(message): Promise<void>
This is a convenience method for adding a human message string to the store. Please note that this is a convenience method. Code should favor the bulk addMessages interface instead to save on round-trips to the underlying persistence layer. This method may be deprecated in a future release.
Parameters
- message: string
Returns Promise<void>
Inherited from BaseListChatMessageHistory.addUserMessage
- Defined in langchain-core/dist/chat_history.d.ts:41

clear

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

Returns Promise<void>
Overrides BaseListChatMessageHistory.clear
- 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
Overrides BaseListChatMessageHistory.getMessages
- Defined in libs/langchain-community/src/stores/message/dynamodb.ts:161

toJSON

toJSON(): Serialized
Returns Serialized
Inherited from BaseListChatMessageHistory.toJSON
- Defined in langchain-core/dist/load/serializable.d.ts:69

toJSONNotImplemented

toJSONNotImplemented(): SerializedNotImplemented
Returns SerializedNotImplemented
Inherited from BaseListChatMessageHistory.toJSONNotImplemented
- Defined in langchain-core/dist/load/serializable.d.ts:70