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diff --git a/bundles/org.simantics.objmap2/src/org/simantics/objmap/structural/annotations/factories/RelatedValueRuleFactory.java b/bundles/org.simantics.objmap2/src/org/simantics/objmap/structural/annotations/factories/RelatedValueRuleFactory.java
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+++ b/bundles/org.simantics.objmap2/src/org/simantics/objmap/structural/annotations/factories/RelatedValueRuleFactory.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2013 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.objmap.structural.annotations.factories;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Field;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.ResourceNotFoundException;
+import org.simantics.db.exception.ServiceException;
+import org.simantics.db.exception.ValidationException;
+
+import org.simantics.objmap.bidirectional.IBidirectionalMappingRule;
+import org.simantics.objmap.graph.annotations.RelatedValue;
+import org.simantics.objmap.graph.rules.ValueRule;
+import org.simantics.objmap.graph.rules.adapters.IdentityAdapter;
+import org.simantics.objmap.graph.rules.adapters.ValueAdapter;
+import org.simantics.objmap.structural.rules.domain.RelatedValueAccessor;
+import org.simantics.objmap.graph.rules.factory.IFieldRuleFactory;
+import org.simantics.objmap.graph.rules.range.AdaptedRangeAccessor;
+import org.simantics.objmap.graph.rules.range.FieldAccessor;
+import org.simantics.objmap.graph.rules.range.IRangeAccessor;
+import org.simantics.objmap.structural.StructuralResource;
+
+
+public class RelatedValueRuleFactory<Range> implements IFieldRuleFactory<StructuralResource, Range> {
+
+    @Override
+    public IBidirectionalMappingRule<StructuralResource, Range> create(ReadGraph g, Annotation _annotation, Field field) throws ResourceNotFoundException,
+            ValidationException, ServiceException {
+        RelatedValue annotation = (RelatedValue) _annotation;
+        Class<? extends ValueAdapter> adapterClass = annotation.adapter();
+        IRangeAccessor<Range,Object> rangeAccessor = new FieldAccessor<Range,Object>(field);
+        Resource valueType;
+        if (adapterClass == IdentityAdapter.class) {
+            valueType = DataTypeUtils.dataTypeOfClass(g, field.getType());
+        } else {
+            try {
+                ValueAdapter adapter = adapterClass.newInstance();
+                rangeAccessor = new AdaptedRangeAccessor<Range>(rangeAccessor, adapter);
+                valueType = adapter.rangeTypeToDomainType(g, field.getType());
+            } catch (InstantiationException e) {
+                throw new RuntimeException(e);
+            } catch (IllegalAccessException e) {
+                throw new RuntimeException(e);
+            }
+        }
+        return new ValueRule<StructuralResource,Range>(new RelatedValueAccessor(g.getResource(annotation.value()), valueType,false,true,false), rangeAccessor);
+    }
+
+}