Michael, We may start at Thing or Source (or some other node), but would like to refine by some data on hasSource in the WHERE clause (and take advantage of an index). An example query could be:
MATCH (thing:THING)-[rel:hasSource]->(source:SOURCE), (thing)-[:hasFeature]->(feature:FEATURE) WHERE feature.name IN ['someFeature', 'someFeature2'] AND rel:someData = "data" RETURN thing or it could be re-written as: MATCH (thing:THING)-[:hasFeature]->(feature:FEATURE) WHERE feature.name IN ['someFeature', 'someFeature2'] MATCH (thing)-[rel:hasSource]->(source:SOURCE) WHERE rel:someData = "data" RETURN thing Hope it helps. Thanks, Brandon On Saturday, January 24, 2015 at 5:29:43 PM UTC-6, Michael Hunger wrote: > > Brandon, > > what kind of query use-case would you want to support? > Would you still start at a Thing or Source and then only want to access as > subset of the relationships? > Or really lookup :hasSource relationships independent of Source or Thing? > > This would help us understand the scope of your question. > > Cheers, Michael > > Am 24.01.2015 um 19:20 schrieb [email protected] <javascript:>: > > Hello, > > Are edge schema indexes in the works for a future version? The main > reason I ask is for modeling data. One use case example is a "thing" can > have many "sources" and we really only want unique "things" in the graph. > > (:THING)-[:hasSource]->(:SOURCE) > > In this scenario, the bulk of the data lives on the hasSource edge, as the > "thing" has multiple sources with slightly different data from each source. > The problem is currently you cannot index any of this data as it's an edge. > > The other option is to have something like this: > > (:THING)-[:hasSourceData]->(:THINGDATA)-[:hasSource]->(:SOURCE) > > Then we can index "thing data" properties, but it introduces an extra node > and relationship. > > Just seeing what future schema index options there are planned for Neo4j. > > Unrelated, I would love to be able to specify a "case insensitive" option > for a schema index. > > Thanks, > Brandon > > -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <javascript:>. > For more options, visit https://groups.google.com/d/optout. > > > -- You received this message because you are subscribed to the Google Groups "Neo4j" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
