community: Get Document object by Document ID from Chroma DB

[raunakshrivastava7]

• Description:
  Added get_document_by_id() function in langchain_community/vectorstores/chroma.py to get Document object from
  Document ID.
  Document object is required for updating any document. get_document_by_id() function will help users to get the
  Document object from Document ID. Then the metadata or page_content of the Document object can be modified by the
  user and passed to update_document() function.

• Issue: Fixed Get Chroma vectorstore Document by doc_id for document / metadata updates. #15261

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Name	Status	Preview	Comments	Updated (UTC)
langchain	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 27, 2024 4:23pm

[baskaryan]

cc @jeffchuber

[jeffchuber]

@raunakshrivastava7 another way to do this is to by creating a chroma client and passing it to langchain.

https://python.langchain.com/docs/integrations/vectorstores/chroma#passing-a-chroma-client-into-langchain

My personal feeling is the glue between Chroma-Langchain should focus on the the tools that Langchain as a framework needs (maybe that is the case here?) - otherwise the glue will have to expand to be the full set of Chroma's API and then is more apt to break. From a user education perspective, I think it's also generally more clear "which API you are learning" if they are separate.

However... I don't feel strongly! Maybe it's just this morning cup of coffee talking.

@baskaryan thoughts?

[raunakshrivastava7]

As per my understanding, currently the Document object can be fetched using similarity_search functions in langchain. There is no direct method or API to get the Document object from Document ID. The PR solves this problem.

[raunakshrivastava7]

As per my understanding, currently the Document object can be fetched using similarity_search functions in langchain. There is no direct method or API to get the Document object from Document ID. The PR solves this problem.