In a previous post, I was writing that Neo4j, as CouchDB, is using Lucene for full text indexing. While agreeing that this is definitely better than reinventing the wheel, I was also raising my concern about the complexity and scalability of this approach.
Now it looks like there is some work to integrate Neo4j with Solr, the standalone full-text search server based on Lucene . This would definitely address the issue I have raised. Anyway it is not yet clear from the original message  how this integration will work though (it sounds like a two-way integration, but I may be misinterpreting the details). The code is availalbe on Neo4j ☞ SVN.