Hi, Mattias. Here's a use case:
I have a million nodes representing cars, and those nodes are all "tagged" with some value, let's say a color name, as a property. I have indexed those nodes on the color property value. Now I'd like to present a list of the distinct color values with which nodes (cars) have been tagged. At present, I'd need to iterate through all million, read the property, and maintain a "distinct" HashSet as I iterate through them. I've tried using relationships from the "car" node(s) to a set of "color" node(s), but had scalability/performance issues when there are lots of car nodes being added/deleted (the "color" node quickly becomes a hot spot/synchronization choke point). Rick -----Original Message----- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Mattias Persson Sent: Tuesday, April 26, 2011 2:17 PM To: Neo4j user discussions Subject: Re: [Neo4j] Lucene/Neo Indexing Question Hi Rick, No, not really. What the use case for having such a method? 2011/4/26 Rick Bullotta <rick.bullo...@thingworx.com>: > Hi, all. > > Is there a method or suggested approach for obtaining a list of all of the > distinct key values in a given index? I don't care about the indexed nodes > or relationships themselves, just the value(s) of the key. > > Thanks, > > Rick > > _______________________________________________ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Mattias Persson, [matt...@neotechnology.com] Hacker, Neo Technology www.neotechnology.com _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
