Fixed 'When setting an indexed property = nil, raises an undefined me…

…thod root_class exception' issue 4 [#122 state:resolved]

CONTRIBUTORS

@@ -13,3 +13,4 @@ Contributors:
 * Carlo Cabanilla
 * Anders Janmyr
 * Nick Sieger
+* Sean Bowman

lib/neo4j/mixins/java_property_mixin.rb

@@ -74,7 +74,7 @@ def []=(key, value)
   def delete_property (name)
     removed = !removeProperty(name).nil?
     if (removed and @_wrapper and name[0] != '_') # do not want events on internal properties
-      @_wrapper.class.indexer.on_property_changed(self, name)
+      @_wrapper.class.indexer.on_property_changed(@_wrapper, name)
     end
     removed
   end

test/neo4j/node_lucene_spec.rb

@@ -26,6 +26,23 @@ class TestNode
     end
 
     after(:each) { stop }
+
+    it "should allow to set an indexed property to nil" do 
+# see http://github.com/andreasronge/neo4j/issues#issue/4
+      Neo4j::Transaction.run do
+        t = TestNode.new
+        t.name = 'hello'
+      end
+
+      Neo4j::Transaction.new
+      t2 = TestNode.find(:name => 'hello')[0]
+      t2.name = nil #should not raise an exception
+      Neo4j::Transaction.finish
+
+      Neo4j::Transaction.new
+      t2 = TestNode.find(:name => 'hello').should be_empty
+      Neo4j::Transaction.finish
+    end
 
     it "should keep index on filesystem if specifed" do
       Lucene::Config[:store_on_file] = true