Neo4j 2.0M3空間0.12 - 空間不會爲我的查詢返回任何結果

Question

我按照教程http://neo4j.github.io/spatial/#rest-api-add-a-node-to-the-spatial-index來測試Spatial 0.12與Neo4j 2.0M03。我正在嘗試SimplePointLayer示例，以獲取半徑內的節點。

雖然它看起來像所有東西都被創建（層，索引等），並且我的域節點索引正確，我的Cypher查詢或我的Java空間查詢代碼不會返回任何結果。

當我嘗試Neo4j 1.9和Spatial 0.11完全相同的東西時，它工作得很好。

在深入研究這個問題之前，如果這是一個已知問題，我想問問Neo4j社區。提前致謝。

{ 
    "layer" : "geom", 
    "lat" : "lat", 
    "lon" : "lon" 
} 

curl -H "Content-Type: application/json" -X POST -d @geo_layer.json http://localhost:7474/db/data/ext/SpatialPlugin/graphdb/addSimplePointLayer 

geo_index.json：

{ 
    "name" : "geom", 
    "config" : { 
      "provider" : "spatial", 
      "geometry_type" : "point", 
      "lat" : "lat", 
      "lon":"lon" 
      } 
} 

curl -H "Content-Type: application/json" -X POST -d @geo_index.json http://localhost:7474/db/data/index/node 

geo_node.json：

{ 
    "lat" : 60.1, 
    "lon" : 15.2 
} 

curl -H "Content-Type: application/json" -X POST -d @geo_node.json http://localhost:7474/db/data/node 

-

geo_layer.json - 基於彼得的評論測試步驟

新節點的ID是 - 我從一個空的圖開始。

domain_node.json：

{ 
    "value": "dummy", 
    "key": "dummy", 
    "uri": "http://localhost:7474/db/data/node/5" 
} 

curl -H "Content-Type: application/json" -X POST -d @domain_node.json http://localhost:7474/db/data/index/node/geom 

cypher_query.json：

{ 
    "query": "start node = node:geom('withinDistance:[60.0,15.0, 100.0]') return node;" 
} 

curl -H "Content-Type: application/json" -X POST -d @cypher_query.json http://localhost:7474/db/data/cypher 

其結果是：

{ 
    "message" : "org.neo4j.gis.spatial.indexprovider.GeoPipeFlowHits.iterator()Lorg/neo4j/graphdb/ResourceIterator;", 
    "exception" : "AbstractMethodError", 
    "fullname" : "java.lang.AbstractMethodError", 
    "stacktrace" : [ "org.neo4j.cypher.internal.spi.gdsimpl.TransactionBoundQueryContext$NodeOperations.indexQuery(TransactionBoundQueryContext.scala:120)", "org.neo4j.cypher.internal.spi.DelegatingOperations.indexQuery(DelegatingQueryContext.scala:107)", "org.neo4j.cypher.internal.executionplan.builders.EntityProducerFactory$$anonfun$2$$anonfun$applyOrElse$2.apply(EntityProducerFactory.scala:70)", "org.neo4j.cypher.internal.executionplan.builders.EntityProducerFactory$$anonfun$2$$anonfun$applyOrElse$2.apply(EntityProducerFactory.scala:68)", "org.neo4j.cypher.internal.executionplan.builders.EntityProducerFactory$$anon$1.apply(EntityProducerFactory.scala:38)", "org.neo4j.cypher.internal.executionplan.builders.EntityProducerFactory$$anon$1.apply(EntityProducerFactory.scala:37)", "org.neo4j.cypher.internal.pipes.StartPipe$$anonfun$internalCreateResults$1.apply(StartPipe.scala:34)", "org.neo4j.cypher.internal.pipes.StartPipe$$anonfun$internalCreateResults$1.apply(StartPipe.scala:33)", "scala.collection.Iterator$$anon$13.hasNext(Iterator.scala:371)", "org.neo4j.cypher.internal.ClosingIterator$$anonfun$hasNext$1.apply$mcZ$sp(ClosingIterator.scala:36)", "org.neo4j.cypher.internal.ClosingIterator$$anonfun$hasNext$1.apply(ClosingIterator.scala:35)", "org.neo4j.cypher.internal.ClosingIterator$$anonfun$hasNext$1.apply(ClosingIterator.scala:35)", "org.neo4j.cypher.internal.ClosingIterator.failIfThrows(ClosingIterator.scala:84)", "org.neo4j.cypher.internal.ClosingIterator.hasNext(ClosingIterator.scala:35)", "org.neo4j.cypher.PipeExecutionResult.hasNext(PipeExecutionResult.scala:157)", "scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327)", "scala.collection.convert.Wrappers$IteratorWrapper.hasNext(Wrappers.scala:29)", "org.neo4j.cypher.PipeExecutionResult$$anon$1.hasNext(PipeExecutionResult.scala:73)", "org.neo4j.helpers.collection.ExceptionHandlingIterable$1.hasNext(ExceptionHandlingIterable.java:58)", "org.neo4j.helpers.collection.IteratorWrapper.hasNext(IteratorWrapper.java:42)", "org.neo4j.server.rest.repr.ListRepresentation.serialize(ListRepresentation.java:58)", "org.neo4j.server.rest.repr.Serializer.serialize(Serializer.java:75)", "org.neo4j.server.rest.repr.MappingSerializer.putList(MappingSerializer.java:61)", "org.neo4j.server.rest.repr.CypherResultRepresentation.serialize(CypherResultRepresentation.java:83)", "org.neo4j.server.rest.repr.MappingRepresentation.serialize(MappingRepresentation.java:42)", "org.neo4j.server.rest.repr.OutputFormat.assemble(OutputFormat.java:185)", "org.neo4j.server.rest.repr.OutputFormat.formatRepresentation(OutputFormat.java:133)", "org.neo4j.server.rest.repr.OutputFormat.response(OutputFormat.java:119)", "org.neo4j.server.rest.repr.OutputFormat.ok(OutputFormat.java:57)", "org.neo4j.server.rest.web.CypherService.cypher(CypherService.java:96)", "java.lang.reflect.Method.invoke(Method.java:601)", "org.neo4j.server.rest.security.SecurityFilter.doFilter(SecurityFilter.java:112)" ] 

- 可選地 -

location.json：

{ 
    "layer" : "geom", 
    "node" : "http://localhost:7474/db/data/node/5" 
} 

curl -H "Content-Type: application/json" -X POST -d @location.json http://localhost:7474/db/data/ext/SpatialPlugin/graphdb/addNodeToLayer 

geo_query.json：

{ 
    "layer" : "geom", 
    "distanceInKm" : "100", 
    "pointX" : "15", 
    "pointY" : "60" 
} 

curl -H "Content-Type: application/json" -X POST -d @geo_query.json http://localhost:7474/db/data/ext/SpatialPlugin/graphdb/findGeometriesWithinDistance 

返回結果爲空。

Answer 1

確保您通過暗號查詢它之前，將節點添加到索引，因爲這會在DB必要structurs，看到https://github.com/neo4j/spatial/blob/master/src/test/java/org/neo4j/gis/spatial/SpatialPluginFunctionalTest.java#L268