X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.objmap2%2Fsrc%2Forg%2Fsimantics%2Fobjmap%2Fgraph%2Fimpl%2FMapping.java;h=4820dae016b44c358fe52206d876f25a66b42fe3;hp=1589e94326ef2be74755dbd1e114895bdc111ca1;hb=d5db319fc2c400a8c76249e1ed7ffd9deb9f7609;hpb=9ad22e13e54566a293067b8708bff387682deb1b

diff --git a/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/impl/Mapping.java b/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/impl/Mapping.java
index 1589e9432..4820dae01 100644
--- a/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/impl/Mapping.java
+++ b/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/impl/Mapping.java
@@ -12,8 +12,6 @@
 package org.simantics.objmap.graph.impl;
 
 
-import gnu.trove.map.hash.THashMap;
-
 import java.util.AbstractSet;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -21,12 +19,9 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.simantics.db.ReadGraph;
 import org.simantics.db.WriteGraph;
 import org.simantics.db.exception.DatabaseException;
-
 import org.simantics.objmap.backward.IBackwardMapping;
 import org.simantics.objmap.exceptions.MappingException;
 import org.simantics.objmap.forward.IForwardMapping;
@@ -34,6 +29,10 @@ import org.simantics.objmap.graph.IMapping;
 import org.simantics.objmap.graph.IMappingListener;
 import org.simantics.objmap.graph.schema.ILinkType;
 import org.simantics.objmap.graph.schema.IMappingSchema;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import gnu.trove.map.hash.THashMap;
 
 /**
  * An implementation of IMapping. The class should not be created
@@ -306,13 +305,15 @@ public class Mapping<Domain, Range> implements IMapping<Domain, Range> {
 			
 			if(listensDomain) {
 			    RangeUpdateRequest<Domain,Range> request = new RangeUpdateRequest<Domain,Range>(link, map, this);
+			    boolean changes;
 			    try {
-                    g.syncRequest(request, request);
+			    	changes = g.syncRequest(request, request) > 0;
                 } catch (DatabaseException e) {
                     throw new MappingException(e);
                 }
-			    // TODO check if really modified
-			    updated.add(link.rangeElement);
+			    
+			    if (changes)
+			    	updated.add(link.rangeElement);
 			}
 			else
 			    if(link.type.updateRange(g, map, link.domainElement, link.rangeElement))