Hi, Mattias. I floated a proposal a couple days ago for enhancements to the index framework to support this type of stuff.
Here's what I was thinking: Any thoughts on those suggestions? Best, Rick ________________________________________ From: [email protected] [[email protected]] On Behalf Of Mattias Persson [[email protected]] Sent: Sunday, May 01, 2011 5:41 AM To: Neo4j user discussions Subject: Re: [Neo4j] Lucene/Neo Indexing Question 2011/4/26 Rick Bullotta <[email protected]>: > 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). Allright, yeah such nodes can become bottlenecks, so I see your problem for sure. > > Rick > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] 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 <[email protected]>: >> 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 >> [email protected] >> https://lists.neo4j.org/mailman/listinfo/user >> > > > > -- > Mattias Persson, [[email protected]] > Hacker, Neo Technology > www.neotechnology.com > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > -- Mattias Persson, [[email protected]] Hacker, Neo Technology www.neotechnology.com _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
