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diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ObjectsWithSupertype.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ObjectsWithSupertype.java
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+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ObjectsWithSupertype.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2010 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.db.common.request;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+
+final public class ObjectsWithSupertype extends ResourceRead3<Set<Resource>> {
+
+    public ObjectsWithSupertype(Resource subject, Resource subrelationOf, Resource instanceOf) {
+        super(subject, subrelationOf, instanceOf);
+    }
+
+    @Override
+    public Set<Resource> perform(ReadGraph graph) throws DatabaseException {
+        
+    	Set<Resource> result = new HashSet<Resource>();
+    	for(Resource object : graph.getObjects(resource, resource2)) {
+    		if(graph.isInheritedFrom(object, resource3)) result.add(object);
+    	}
+    	return result;
+        
+    }
+
+}