foundation/eclipselink.core.test/src/org/eclipse/persistence/testing/tests/queries/PessimisticLockRefreshTest.java

/*******************************************************************************
 * Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the 
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 
 * which accompanies this distribution. 
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at 
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
 ******************************************************************************/
package org.eclipse.persistence.testing.tests.queries;

import org.eclipse.persistence.queries.*;
import org.eclipse.persistence.testing.models.employee.domain.*;

/**
 * Tests the decoupling of bean-level pessimistic locking and refresh queries.
 * <p>
 * 
 * @author  smcritch
 */
public class PessimisticLockRefreshTest extends PessimisticLockFineGrainedTest {

    public PessimisticLockRefreshTest(short lockMode) {
        super(lockMode);
        setDescription("This test verifies the pessimistic locking feature works " + 
                       "properly when set on the descriptor.  And especially only for queries " + 
                       " executed inside a UnitOfWork, not outside.  Outside the query should " + 
                       " be a regular NO_LOCK query.");
    }

    public void test() throws Exception {
        checkSelectForUpateSupported();

        if (this.lockMode == ObjectLevelReadQuery.LOCK_NOWAIT) {
            checkNoWaitSupported();
        }

        // If this did not work, would have had thrown a fetch out of sequence exception.
        ReadObjectQuery query = new ReadObjectQuery(Address.class);

        uow = getSession().acquireUnitOfWork();

        Address address = (Address)uow.executeQuery(query);

        String oldCity = address.getCity();

        address.setCity("Naboo");

        query.setShouldRefreshIdentityMapResult(true);
        query.setSelectionObject(address);

        Address newAddress = (Address)uow.executeQuery(query);

        strongAssert(newAddress.getCity().equals(oldCity), 
                     "A pessimistically locked object could not be refreshed.");


        // Part II: Now make sure that when lock it for the first time, that
        // it is refreshed.

        uow.release();

        uow = getSession().acquireUnitOfWork();
        query = new ReadObjectQuery(Address.class);
        query.dontAcquireLocks();
        address = (Address)uow.executeQuery(query);

        address.setCity("Naboo");

        query = new ReadObjectQuery(Address.class);
        query.setSelectionObject(address);

        newAddress = (Address)uow.executeQuery(query);

        strongAssert(!newAddress.getCity().equals("Naboo"), 
                     "A pessimistically locked object should be refreshed when read for the first time.");
    }
}