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diff --git a/bundles/org.simantics.modeling/src/org/simantics/modeling/scl/ontologymodule/GraphEntityType.java b/bundles/org.simantics.modeling/src/org/simantics/modeling/scl/ontologymodule/GraphEntityType.java
new file mode 100644
index 000000000..8ea51cfd0
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+++ b/bundles/org.simantics.modeling/src/org/simantics/modeling/scl/ontologymodule/GraphEntityType.java
@@ -0,0 +1,84 @@
+package org.simantics.modeling.scl.ontologymodule;
+
+import static org.simantics.scl.compiler.elaboration.expressions.Expressions.externalConstant;
+import gnu.trove.map.hash.THashMap;
+
+import org.simantics.databoard.Bindings;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.layer0.Layer0;
+import org.simantics.scl.compiler.common.names.Name;
+import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;
+import org.simantics.scl.compiler.elaboration.expressions.EApply;
+import org.simantics.scl.compiler.elaboration.expressions.EConstant;
+import org.simantics.scl.compiler.elaboration.expressions.EVariable;
+import org.simantics.scl.compiler.elaboration.expressions.Expression;
+import org.simantics.scl.compiler.elaboration.expressions.Variable;
+import org.simantics.scl.compiler.elaboration.java.CheckRelation;
+import org.simantics.scl.compiler.elaboration.query.QAtom;
+import org.simantics.scl.compiler.elaboration.query.QConjunction;
+import org.simantics.scl.compiler.elaboration.query.Query;
+import org.simantics.scl.compiler.elaboration.relations.SCLEntityType;
+import org.simantics.scl.compiler.elaboration.relations.SCLRelation;
+import org.simantics.scl.compiler.types.Types;
+
+public class GraphEntityType implements SCLEntityType {
+
+    Resource type;
+    THashMap<String, GraphAttribute> attributeMap = new THashMap<String, GraphAttribute>(); 
+    
+    public GraphEntityType(ReadGraph graph, Resource type) throws DatabaseException {
+        this.type = type;
+        Layer0 L0 = Layer0.getInstance(graph);
+        for(Resource stype : graph.getSupertypes(type))
+            addSupertype(graph, L0, stype);
+        addSupertype(graph, L0, type);
+        addRelation(graph, L0, L0.PartOf);
+    }
+    
+    private void addSupertype(ReadGraph graph, Layer0 L0, Resource type) throws DatabaseException {
+        for(Resource relation : graph.getObjects(type, L0.DomainOf))
+            addRelation(graph, L0, relation);
+    }
+    
+    private void addRelation(ReadGraph graph, Layer0 L0, Resource relation) throws DatabaseException {
+        String relationName = (String)graph.getRelatedValue(relation, L0.HasName, Bindings.STRING);
+        attributeMap.put(relationName, new GraphAttribute(OntologyModule.createRelation(graph, relation)));
+    }
+
+    private static final Name DB_isInstanceOf = Name.create("Simantics/DB", "isInstanceOf");
+    
+    @Override
+    public Query generateQuery(TranslationContext context, Variable base,
+            AttributeBinding[] attributeBindings) {
+        Query[] queries = new Query[attributeBindings.length+1];
+        for(int i=0;i<attributeBindings.length;++i) {
+            AttributeBinding binding = attributeBindings[i];
+            GraphAttribute attribute = (GraphAttribute)binding.attribute;
+            SCLRelation relation = attribute.relation;
+            queries[i] = new QAtom(relation, new EVariable(base), new EVariable(binding.variable));
+        }
+        queries[attributeBindings.length] = new QAtom(CheckRelation.INSTANCE,
+                new EApply(
+                        new EConstant(context.getEnvironment().getValue(DB_isInstanceOf)),
+                        new EVariable(base),
+                        externalConstant(type, Types.RESOURCE)));
+        return new QConjunction(queries);
+    }
+
+    @Override
+    public Attribute getAttribute(String name) {
+        return attributeMap.get(name);
+    }
+    
+    public static class GraphAttribute implements Attribute {
+        SCLRelation relation;
+        Expression[] evidence;
+
+        public GraphAttribute(SCLRelation relation) {
+            this.relation = relation;
+        }
+    }
+
+}