--- /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.write.request;
+
+import org.junit.Test;
+import org.simantics.db.Resource;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.common.request.WriteRequest;
+import org.simantics.db.exception.CancelTransactionException;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.testing.base.ExistingDatabaseTest;
+import org.simantics.layer0.Layer0;
+
+/**
+ * Checks that unexpected write callback failures do not crash the session and
+ * that the write request results were correctly committed.
+ *
+ * @author Tuukka Lehtonen
+ */
+public class WriteCancelTest extends ExistingDatabaseTest {
+
+ private static final String AN_ENTITY = "An entity";
+ Resource written;
+ Resource writtenName;
+
+ @Test
+ public void testWriteCancel() throws DatabaseException{
+
+ try {
+ getSession().syncRequest(new WriteRequest() {
+ @Override
+ public void perform(WriteGraph graph) throws DatabaseException {
+ Layer0 b = Layer0.getInstance(graph);
+ written = graph.newResource();
+ writtenName = graph.newResource();
+ graph.claim(written, b.InstanceOf, null, b.Entity);
+ graph.claim(writtenName, b.InstanceOf, null, b.String);
+ graph.claimValue(writtenName, AN_ENTITY);
+ graph.claim(written, b.HasName, writtenName);
+
+ //throw new DatabaseException("Intentional write request cancellation by unexpected exception");
+ throw new CancelTransactionException("Intentional write request cancellation");
+ }
+ });
+ } catch (DatabaseException e) {
+ if (DEBUG)
+ e.printStackTrace();
+ }
+
+ // Make sure that we can at least start a new transaction after the
+ // cancelled one, but don't do anything yet.
+ getSession().syncRequest(new WriteRequest() {
+ @Override
+ public void perform(WriteGraph graph) throws DatabaseException {
+ }
+ });
+
+ // Ensure that the previously written data does not exist.
+ getSession().syncRequest(new WriteRequest() {
+ @Override
+ public void perform(WriteGraph graph) throws DatabaseException {
+ Layer0 b = Layer0.getInstance(graph);
+ assertTrue(!graph.hasStatement(written, b.InstanceOf, b.Entity));
+ assertTrue(!graph.hasStatement(written, b.HasName, writtenName));
+ assertTrue(!graph.hasStatement(writtenName, b.InstanceOf, b.String));
+ assertTrue(!graph.hasValue(writtenName));
+ }
+ });
+ }
+
+}