I can elaborate a little on what Peter says. The DynamicLayer support is indeed the only way to do what you want right now, but I think it is actually quite a good fit for your use case. When defining a dynamic layer you are actually just defining a 'returnable evaluator', which will be applied to the nodes during the RTree spatial search. This means that the primary search is spatial, but for each leaf node (geometry) the dynamic layer query is applied as a filter.
If you use CQL for the query, then all geometries are converted into JTS geometry classes for the filter (which adds a little overhead, so if the spatial query is not your limited factor, this can affect performance). If you use JSON for the query, it is applied directly to the graph as a pattern match. So JSON should be faster, but does also require that you know the structure of the graph, which the CQL approach does not. Peters pointer to the TestDynamicLayers class is the best place to start for seeing how to use both CQL and JSON filter syntaxes. On Mon, Aug 29, 2011 at 11:59 AM, Peter Neubauer < [email protected]> wrote: > Hi there, > well, spatial querying is not something that can be easily stuck into an > iterator. If you want more than casual querying, I think you need to use > the > GeoTools APIs, we provide support for CQL as a query lang there, see > > https://github.com/neo4j/spatial/blob/master/src/test/java/org/neo4j/gis/spatial/TestDynamicLayers.java#L60for > some examples. Basically, you define a dynamic layer witha CQL query, > which will return the subset of the full layer (e.g. a SimplePointLayer) > that matches that query. > > Would that help? > > Cheers, > > /peter neubauer > > GTalk: neubauer.peter > Skype peter.neubauer > Phone +46 704 106975 > LinkedIn http://www.linkedin.com/in/neubauer > Twitter http://twitter.com/peterneubauer > > http://www.neo4j.org - Your high performance graph database. > http://startupbootcamp.org/ - Öresund - Innovation happens HERE. > http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. > > > On Mon, Aug 29, 2011 at 1:37 AM, faffi <[email protected]> > wrote: > > > Hey guys, > > > > I'm seeing some kind of disconnect between the spatial and the regular > > graph > > traversing query. I can't find a way of executing a spatial query like in > > SimplePointLayer but also providing something like a ReturnEvaluator. > > > > My use case is essentially for all nodes within a 10km radius, return all > > with name "foo". Do I actually have to iterate through all the nodes > > returned by the query in a list and individually check them? > > > > Thanks, > > faffi > > > > -- > > View this message in context: > > > http://neo4j-community-discussions.438527.n3.nabble.com/Spatial-query-with-property-filter-tp3291410p3291410.html > > Sent from the Neo4j Community Discussions mailing list archive at > > Nabble.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 > _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
