/******************************************************************************* | |
* 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.unitofwork; | |
import java.io.StringWriter; | |
import java.io.Writer; | |
import org.eclipse.persistence.expressions.Expression; | |
import org.eclipse.persistence.expressions.ExpressionBuilder; | |
import org.eclipse.persistence.logging.SessionLog; | |
import org.eclipse.persistence.sessions.Session; | |
import org.eclipse.persistence.sessions.SessionEventListener; | |
import org.eclipse.persistence.sessions.UnitOfWork; | |
import org.eclipse.persistence.testing.tests.remote.RemoteModel; | |
import org.eclipse.persistence.testing.framework.AutoVerifyTestCase; | |
import org.eclipse.persistence.testing.framework.TestErrorException; | |
import org.eclipse.persistence.testing.models.employee.domain.Employee; | |
/** | |
* Test that the refresh in a unit of work does not needlessly commit changes. | |
*/ | |
public class UnitOfWorkComplexRefreshTest extends AutoVerifyTestCase { | |
protected Employee dbEmployee1; | |
protected Employee dbEmployee2; | |
protected UnitOfWork uow1; | |
protected UnitOfWork uow2; | |
protected Writer oldLog; | |
protected int oldLogLevel; | |
protected StringWriter tempWriter; | |
// On some platforms (Sybase) if conn1 updates a row but hasn't yet committed transaction then | |
// reading the row through conn2 may hang. | |
// To avoid this problem the listener would decrement transaction isolation level, | |
// then reading through conn2 no longer hangs, however may result (results on Sybase) | |
// in reading of uncommitted data. | |
SessionEventListener listener; | |
public UnitOfWorkComplexRefreshTest() { | |
setDescription("Test that a refreshed object in unit of work does not generate sql on commit."); | |
} | |
public void setup() { | |
if (getSession().isClientSession()) { | |
listener = checkTransactionIsolation(); | |
} | |
getAbstractSession().beginTransaction(); | |
uow1 = getSession().acquireUnitOfWork(); | |
uow2 = getSession().acquireUnitOfWork(); | |
Expression exp = new ExpressionBuilder().get("firstName").equal("Charles"); | |
dbEmployee1 = (Employee)uow1.readObject(Employee.class, exp); | |
dbEmployee2 = (Employee)uow2.readObject(Employee.class, exp); | |
dbEmployee1.getAddress().setCity("Bobstown"); | |
} | |
public void reset() { | |
if(getAbstractSession().isInTransaction()) { | |
getAbstractSession().rollbackTransaction(); | |
} | |
getSession().getIdentityMapAccessor().initializeAllIdentityMaps(); | |
if(listener != null) { | |
getAbstractSession().getParent().getEventManager().removeListener(listener); | |
listener = null; | |
} | |
} | |
public void switchLog(Session aSession) { | |
if (aSession instanceof org.eclipse.persistence.internal.sessions.remote.RemoteUnitOfWork) { | |
aSession = RemoteModel.getServerSession(); | |
} | |
oldLog = aSession.getLog(); | |
oldLogLevel = aSession.getLogLevel(); | |
aSession.setLogLevel(SessionLog.FINE); | |
tempWriter = new StringWriter(); | |
aSession.setLog(tempWriter); | |
} | |
public void switchLoggingBack(Session aSession) { | |
if (aSession.isRemoteUnitOfWork()) { | |
aSession = RemoteModel.getServerSession(); | |
} | |
aSession.setLogLevel(oldLogLevel); | |
aSession.setLog(oldLog); | |
} | |
public void test() { | |
dbEmployee2.getAddress().setCity("Yousersville"); | |
uow2.commit(); | |
uow1.refreshObject(dbEmployee1); | |
switchLog(uow1); | |
uow1.commit(); | |
switchLoggingBack(uow1); | |
} | |
public void verify() { | |
if (dbEmployee1.getAddress().getCity().equals("Bobstown")) { | |
// The address was not properly refreshed. | |
throw new TestErrorException("The object in the unit of work was properly refreshed."); | |
} | |
if (tempWriter.toString().indexOf("UPDATE ADDRESS SET CITY = 'Yousersville'") != -1) { | |
throw new TestErrorException("The second commit updated the database, but should not have, '" + | |
tempWriter.toString() + "'"); | |
} | |
} | |
} |