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diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/request/SingleObjectWithType.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/SingleObjectWithType.java
new file mode 100644
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+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/SingleObjectWithType.java
@@ -0,0 +1,53 @@
+/*******************************************************************************
+ * 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 org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.utils.NameUtils;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.exception.NoSingleResultException;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+public final class SingleObjectWithType extends ResourceRead3<Resource> {
+
+    public SingleObjectWithType(Resource resource, Resource predicate, Resource type) {
+        super(resource, predicate, type);
+    }
+
+    @Override
+    public Resource perform(ReadGraph graph) throws DatabaseException {
+        Resource result = null;
+        for (Resource object : graph.getObjects(resource, resource2)) {
+            if (graph.isInstanceOf(object, resource3)) {
+                if (result != null)
+                    throw new NoSingleResultException("More than 1 objects for relation "
+                            + NameUtils.getSafeName(graph, resource2) + " with type "
+                            + NameUtils.getSafeName(graph, resource3) + " at "
+                            + NameUtils.getSafeName(graph, resource));
+
+                result = object;
+            }
+        }
+
+        if (result == null)
+            throw new NoSingleResultException("No objects for relation "
+                    + NameUtils.getSafeName(graph, resource2) + " with type "
+                    + NameUtils.getSafeName(graph, resource3) + " at "
+                    + NameUtils.getSafeName(graph, resource));
+
+        return result;
+    }
+
+}