Semantic search in P2P networks

we are doing a project that involves semantic search in P2P networks. Basically we want to do a file searching/sharing mechanism that semantically relates files based on the data. we are using RDF to represent the files' 开发者_如何学编程metadata. We are stuck with the database part. every peer has a local repository that it uses to store metadata. how do we implement this store? please help..

I would suggest you to use Sesame. It is an open source project for storage and querying of RDF data.