Re: [Neo4j] Mapping domain graph to spatial layer
Marcin, in the case of points, maybe the creation of the bbox property could be done automatically, I wil raise an issue around this. Otherwise, let us know how things are progressing for you, always good to get feedback! 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 Sat, Oct 15, 2011 at 4:50 PM, Marcin Zpa se...@vp.pl wrote: Hi Peter, thank you very much! for a very detailed description. Know i understand it very good. The chunk of information which i was missing is fact that the node being added has to have bbox property in order to be indexed by spatial layer. Know it is clear to me. Once again thanks a lot and of course keep the pace! Spatial neo4j is great! Cheers, Marcin -- View this message in context: http://neo4j-community-discussions.438527.n3.nabble.com/Mapping-domain-graph-to-spatial-layer-tp3409159p3424089.html Sent from the Neo4j Community Discussions mailing list archive at Nabble.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
Re: [Neo4j] Mapping domain graph to spatial layer
Hi Peter, thank you very much! for a very detailed description. Know i understand it very good. The chunk of information which i was missing is fact that the node being added has to have bbox property in order to be indexed by spatial layer. Know it is clear to me. Once again thanks a lot and of course keep the pace! Spatial neo4j is great! Cheers, Marcin -- View this message in context: http://neo4j-community-discussions.438527.n3.nabble.com/Mapping-domain-graph-to-spatial-layer-tp3409159p3424089.html Sent from the Neo4j Community Discussions mailing list archive at Nabble.com. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Mapping domain graph to spatial layer
Marcin, look at https://github.com/neo4j/spatial/blob/master/src/test/java/org/neo4j/gis/spatial/TestSimplePointLayer.java#L42 where data is added to the SimplePointLayer, specifying that the lat/lon should be encoded into Longitude/Latitude properties on the geometry node. For adding existing data to the layer, look at https://github.com/neo4j/spatial/blob/master/src/main/java/org/neo4j/gis/spatial/server/plugin/SpatialPlugin.java#L98 - you are adding an existing node with the right lon/lat properties to the layer, using the specified GeometryEncoder at Layer setup time. I did an example of this in the functional tests, see https://github.com/neo4j/spatial/blob/master/features/start-and-stop.feature#L10 where a layer is created (assuming lon/lat/bbox per default as the geometry nodes properties to be used for indexing, then a raw node is created, then the nodes is added to the layer and indexed, and then you can search for it in different permutations (REST, Gremlin, Cypher, Neo4j Index) Does 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 Tue, Oct 11, 2011 at 6:59 PM, Marcin Zpa se...@vp.pl wrote: Hi Peter, thanks a lot for your quick feedback. What do you mean with skipping encoding step? That means that i could directly index my domain coordinate node and do not create any additional geo nodes. Sorry if you find this question stupid or obvious but i cant follow your suggestion. For me important thing is that after invoking search i want to somehow get back from results provided as SpatialDatabaserecord to domain nodes as for example user. Thanks in advance! -- View this message in context: http://neo4j-community-discussions.438527.n3.nabble.com/Mapping-domain-graph-to-spatial-layer-tp3409159p3413184.html Sent from the Neo4j Community Discussions mailing list archive at Nabble.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
[Neo4j] Mapping domain graph to spatial layer
Hi guys, i think my question is pretty simple, but since i cannot find anything in network about it i decided to ask you. I'm using SDG with cross-store functionality. I have users which are persisted in the relational database. User has Address and Address is stored in Neo4j. Going further Address has Coordinates which are saved in neo and connected with address through ADDRESS_LOCATION. First question is if this way of persisting objects is correct, perform ok and make sense (suggestion ware welcomed). In the future i will have also many routes which i want to save in neo as well. Since i want to give users possibility to find each others and to finds routes in their neighborhood i decided to use neo4 spatial (another reason was curiosity of trying something new ;) and now comes the proper question. How should i map my address coordinates to be able to use them for spatial queries. As for now I am using SimplePointEncoder and EditableLayer. I transform my domain coordinates object to coordinate object from geotool plus i pass property nodeId with the id value of coordinate node which has relationship to address. Once I get results from the search within distance, i transform SpatialDataRecord back to my coordinates using saved nodeId and finding them by id. Once I have coordinates node i traverse it get Address node. This approach seems over-complicated to me and i am convinced there is better way of doing it. I was thinking about creating relationship between domain coordinates and geo node from neo4j spatial. I tried it out with changing implementation of EditableLayer and adding one line after invocation of the method addGeomNode which connect these two but i guess that geo layer should stay isolated from domain that is why i resigned from it. How would i do it in the best way? Does whole this approach with cross-store make sense in this case? -- View this message in context: http://neo4j-community-discussions.438527.n3.nabble.com/Mapping-domain-graph-to-spatial-layer-tp3409159p3409159.html Sent from the Neo4j Community Discussions mailing list archive at Nabble.com. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
