Memory with MultiQueryRetriever

[obadahalak]

how I can use FirestoreChatMessageHistory with MultiQueryRetriever in the following code...

[dosubot[bot]]

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Hey there @obadahalak! 🚀

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Based on the information provided, it seems like you want to use the FirestoreChatMessageHistory class in conjunction with the MultiQueryRetriever class. Here's a general idea of how you might go about doing this:

First, you would initialize your FirestoreChatMessageHistory and MultiQueryRetriever instances:

const messageHistory = new FirestoreChatMessageHistory({
  collectionName: "langchain",
  sessionId,
  userId: "[email protected]",
  config: { projectId: "your-project-id" },
});

const model = new ChatAnthropic({});
const retriever = MultiQueryRetriever.fromLLM({
  llm: model,
  retriever: vectorstore.asRetriever(),
  verbose: true,
});

Then, you could use the addUserMessage method of FirestoreChatMessageHistory to add a user's message to the Firestore database:

await messageHistory.addUserMessage("What are mitochondria made of?");

Next, you could use the getRelevantDocuments method of MultiQueryRetriever to retrieve documents relevant to the user's message:

const query = "What are mitochondria made of?";
const retrievedDocs = await retriever.getRelevantDocuments(query);

Finally, you could use the addAIChatMessage method of FirestoreChatMessageHistory to add the AI's response (based on the retrieved documents) to the Firestore database:

await messageHistory.addAIChatMessage(retrievedDocs[0].pageContent);

Please note that this is a simplified example and the actual implementation may vary based on your specific requirements. Also, this code assumes that the retrievedDocs[0].pageContent contains the AI's response, but you might need to process the retrievedDocs in a different way to generate the AI's response.

For more details, you can refer to the following files in the langchainjs repository:

• langchain/src/stores/tests/firestore.int.test.ts
• langchain/src/retrievers/tests/multi_query.int.test.ts

I hope this helps! If you have any further questions, please let me know.

Sources

• langchain/src/stores/tests/firestore.int.test.ts
• langchain/src/retrievers/tests/multi_query.int.test.ts

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[obadahalak]

nice,
but in my case, I have a big file include some information, I need to put my file in the FirestoreChatMessageHistory then any question comes from user, answering from this the saved history