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diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ObjectsWithTypeAsync.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ObjectsWithTypeAsync.java
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+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ObjectsWithTypeAsync.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.Collection;
+import java.util.Set;
+import java.util.concurrent.ConcurrentLinkedQueue;
+
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.ProcedureBarrier;
+import org.simantics.db.common.utils.Logger;
+import org.simantics.db.procedure.AsyncMultiProcedure;
+import org.simantics.db.procedure.AsyncProcedure;
+
+final public class ObjectsWithTypeAsync extends ResourceAsyncRead3<Collection<Resource>> {
+
+    public ObjectsWithTypeAsync(Resource subject, Resource subrelationOf, Resource instanceOf) {
+        super(subject, subrelationOf, instanceOf);
+    }
+
+    @Override
+    public void perform(AsyncReadGraph graph, final AsyncProcedure<Collection<Resource>> procedure) {
+
+    	final Collection<Resource> result = new ConcurrentLinkedQueue<Resource>();
+    	final ProcedureBarrier<Collection<Resource>> ready = new ProcedureBarrier<Collection<Resource>>(1);
+    	
+    	graph.forEachObject(resource, resource2, new AsyncMultiProcedure<Resource>() {
+
+			@Override
+			public void execute(AsyncReadGraph graph, final Resource object) {
+				
+				ready.incrementAndGet();
+				
+				graph.forTypes(object, new AsyncProcedure<Set<Resource>>() {
+					
+					@Override
+					public void execute(AsyncReadGraph graph, Set<Resource> types) {
+
+						if(types.contains(resource3)) {
+							result.add(object);
+						}
+						
+						ready.dec(graph, procedure, result);
+						
+					}
+					
+					@Override
+					public void exception(AsyncReadGraph graph, Throwable throwable) {
+						
+						throwable.printStackTrace();
+			    		Logger.defaultLogError(throwable);
+						
+						ready.except(throwable);
+						ready.dec(graph, procedure, result);
+						
+					}
+					
+				});
+				
+			}
+
+			@Override
+			public void finished(AsyncReadGraph graph) {
+				
+				ready.dec(graph, procedure, result);
+				
+			}
+
+			@Override
+			public void exception(AsyncReadGraph graph, Throwable throwable) {
+				
+				throwable.printStackTrace();
+	    		Logger.defaultLogError(throwable);
+				
+				ready.except(throwable);
+				ready.dec(graph, procedure, result);
+				
+			}
+    		
+    	});
+    	
+    }
+    
+//    @Override
+//    public Collection<Resource> perform(ReadGraph graph) throws DatabaseException {
+//        
+//    	Set<Resource> result = new HashSet<Resource>();
+//    	for(Resource object : graph.getObjects(resource, resource2)) {
+//    		if(graph.isInstanceOf(object, resource3)) result.add(object);
+//    	}
+//    	return result;
+//        
+//    }
+
+}