--- /dev/null
+/*******************************************************************************
+ * 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.tests.api.request.listening;
+
+import java.util.Collection;
+
+import org.junit.Test;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.Session;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.common.procedure.adapter.ListenerAdapter;
+import org.simantics.db.common.request.WriteRequest;
+import org.simantics.db.common.request.WriteResultRequest;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.request.Read;
+import org.simantics.db.testing.base.ExistingDatabaseTest;
+import org.simantics.layer0.Layer0;
+
+public class QueryResultCompareTest1 extends ExistingDatabaseTest {
+
+ @Test
+ public void testNullArrayCompare() throws Exception {
+
+ final Session session = getSession();
+
+ final Resource newResource = getSession().syncRequest(new WriteResultRequest<Resource>() {
+ @Override
+ public Resource perform(WriteGraph graph) throws DatabaseException {
+ return graph.newResource();
+ }
+ });
+
+ session.syncRequest(new Read<Resource[]>() {
+ @Override
+ public Resource[] perform(ReadGraph graph) throws DatabaseException {
+ Layer0 b = Layer0.getInstance(graph);
+ Collection<Resource> coll = graph.getObjects(newResource, b.ConsistsOf);
+ if(coll.isEmpty()) return null;
+ else return coll.toArray(Resource.NONE);
+ }
+ }, new ListenerAdapter<Resource[]>() {
+ @Override
+ public boolean isDisposed() {
+ return false;
+ }
+ });
+
+ getSession().syncRequest(new WriteRequest() {
+ @Override
+ public void perform(WriteGraph graph) throws DatabaseException {
+ Layer0 b = Layer0.getInstance(graph);
+ graph.claim(newResource, b.ConsistsOf, graph.newResource());
+ }
+ });
+
+ }
+}