2010/10/26 Marko Rodriguez <okramma...@gmail.com> > Hello, > > > It could be added... what exactly do you need it for? Is there a use case > > for it? > > Lets say I connect to some graph database and need to know what the indices > are so I can make intelligent queries. If I don't know what indices exist, > then I'm bound to generate new indices (e.g. I called it "people" the first > time and "person" the second time). In MySQL, my most used operation when > coming into a new database is to see what indices exist so I know what my > running time for various queries will be. > > However, personally, I'm providing Blueprints support for multi-indexes and > graph.getIndexNames() is an UnsupportedOperation currently for the Neo4j > implementation. >
Allright, so more from a dba point of views, so to speak. > > > Do you want the Index instances, or just the names/configurations? > > I would want just the names. From there I can get the instances. As, from > what I can tell, you can't get the name from the instance. So, in effect, > you get more information if you start with names first. > The index name could be exposed in the interface as well, and maybe even its configuration... in neo4j you can create indices with a Map of strings as config. > > QUESTION: In Neo4j, are indices unique up to > String[name]/Class[node/relationship]? Meaning, can two indices have the > same name -- one for nodes and one for relationships? > They are name/class unique so e.g. a "persons" Node index as well as a "persons" Relationship index can coexist. And each index can have different implementations... f.ex. one using Lucene<http://lucene.apache.org/java/docs/index.html>and another using Babudb <http://code.google.com/p/babudb/> or whatever (controlled by the "provider" key in the config map at creation of the index). > > Thank you for your time, > Marko. > > http://tinkerpop.com > _______________________________________________ > 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
