[Feature Request]: Metadata Filtering in GraphRAG

[matsumoto-hisa]

Do you need to file an issue?

• [X] I have searched the existing issues and this feature is not already filed.
• [X] My model is hosted on OpenAI or Azure. If not, please look at the "model providers" issue and don't file a new one here.
• [X] I believe this is a legitimate feature request, not just a question. If this is a question, please use the Discussions area.

Is your feature request related to a problem? Please describe.

I am trying to perform metadata filtering in GraphRAG to exclude data that does not contain a specific attribute, such as "x". After filtering, I want to conduct a search using GraphRAG. Currently, it seems that this functionality is not available.

Describe the solution you'd like

I would like to have the ability to filter metadata within GraphRAG, allowing for the exclusion of data based on specific attributes before performing a search. If this feature is not currently available, I would like to know if there are plans to implement it in the future.

Additional context

No response