/******************************************************************************* | |
* 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: | |
* John Vandale - initial API and implementation | |
******************************************************************************/ | |
package org.eclipse.persistence.testing.tests.unitofwork; | |
import java.util.List; | |
import java.util.Random; | |
import org.eclipse.persistence.sessions.*; | |
import org.eclipse.persistence.testing.framework.TestCase; | |
import org.eclipse.persistence.testing.models.employee.domain.PhoneNumber; | |
import org.eclipse.persistence.testing.tests.clientserver.Server; | |
//bug 331064 | |
/** | |
* Test to ensure objects are deleted in order of PK when should order is set to avoid deadlock. | |
*/ | |
public class UnitOfWorkDeleteOrderTest extends TestCase { | |
protected DatabaseLogin login; | |
protected UpdateDeadlockClientDeleteOrder[] clients; | |
protected Server server; | |
public static int NUM_CLIENTS = 20; | |
protected class UpdateDeadlockClientDeleteOrder extends Thread { | |
protected int index; | |
protected Server server; | |
protected Session clientSession; | |
protected Session session; | |
public Throwable exception; | |
public UpdateDeadlockClientDeleteOrder(Server server, Session session, String name, int index) { | |
super(name); | |
this.index = index; | |
this.server = server; | |
this.session = session; | |
this.clientSession = this.server.serverSession.acquireClientSession(); | |
} | |
public void release() { | |
this.clientSession.release(); | |
} | |
public void run() { | |
try { | |
for (int index = 0; index < 5; index++) { | |
UnitOfWork uow = this.clientSession.acquireUnitOfWork(); | |
uow.setShouldOrderUpdates(true); | |
List<PhoneNumber> phoneNumbers = uow.readAllObjects(PhoneNumber.class); | |
Random random = new Random(); | |
for (PhoneNumber phoneNumber : phoneNumbers) { | |
if (random.nextBoolean()) { | |
uow.deleteObject(phoneNumber); | |
} | |
} | |
uow.writeChanges(); | |
Thread.sleep(1000); | |
uow.commit(); | |
} | |
} catch (Throwable t) { | |
t.printStackTrace(); | |
exception = t; | |
} | |
} | |
} | |
public UnitOfWorkDeleteOrderTest() { | |
this.clients = new UpdateDeadlockClientDeleteOrder[NUM_CLIENTS]; | |
setDescription("Test to ensure objects are deleted in order of PK when should order is set to avoid deadlock."); | |
} | |
public void setup() { | |
this.login = (DatabaseLogin)getSession().getLogin().clone(); | |
this.server = new Server(this.login); | |
this.server.serverSession.setSessionLog(getSession().getSessionLog()); | |
this.server.login(); | |
this.server.copyDescriptors(getSession()); | |
for (int index = 0; index < NUM_CLIENTS; index++) { | |
clients[index] = new UpdateDeadlockClientDeleteOrder(this.server, getSession(), "Client" + index, index); | |
} | |
} | |
public void reset() { | |
for (int i = 0; i < NUM_CLIENTS; i++) { | |
this.clients[i].release(); | |
} | |
this.server.logout(); | |
} | |
public void test() { | |
for (int i = 0; i < NUM_CLIENTS; i++) { | |
this.clients[i].start(); | |
} | |
try { | |
for (int i = 0; i < NUM_CLIENTS; i++) { | |
this.clients[i].join(); | |
} | |
} catch (InterruptedException ex) { | |
} | |
} | |
public void verify() { | |
for (int i = 0; i < NUM_CLIENTS; i++) { | |
if (this.clients[i].exception != null) { | |
throwError("Deleting objects caused deadlock."); | |
} | |
} | |
} | |
} |