Merge pull request #1 from paddydub/master

WithinDistance Query
craigtaverner · Dec 5, 2011 · 27e5fbc · 27e5fbc
2 parents 20ac178 + ea0e097
commit 27e5fbc
Showing 1 changed file with 21 additions and 0 deletions.
diff --git a/examples/withindistance_query.rb b/examples/withindistance_query.rb
@@ -0,0 +1,21 @@
+#!/usr/bin/env jruby
+
+$: << 'lib'
+$: << '../lib'
+
+require 'rubygems'
+require 'neo4j/spatial'
+
+
+Neo4j::Transaction.run do
+  index = org.neo4j.gis.spatial.indexprovider.LayerNodeIndex.new("layer1", Neo4j.db.graph, java.util.HashMap.new)
+  batman = Neo4j::Node.new :lat=>37.88, :lon=>41.14, :name => "batman"
+  index.add(batman, "dummy", "value")
+  params = java.util.HashMap.new
+  params[org.neo4j.gis.spatial.indexprovider.LayerNodeIndex::POINT_PARAMETER] = [37.87, 41.13].to_java :Double
+  params[org.neo4j.gis.spatial.indexprovider.LayerNodeIndex::DISTANCE_IN_KM_PARAMETER] = 2.0
+  hits = index.query(org.neo4j.gis.spatial.indexprovider.LayerNodeIndex::WITHIN_DISTANCE_QUERY, params)
+  spatialRecord = hits.single
+  node = Neo4j.db.graph.getNodeById(spatialRecord["id"])
+  puts "Name: #{node["name"]}, Distance: #{spatialRecord["distanceInKm"]}"
+end