/*******************************************************************************
* Copyright (c) 1998, 2015 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:
* James Sutherland - initial impl
******************************************************************************/
package org.eclipse.persistence.testing.tests.jpa.performance.concurrent;
import java.util.List;
import javax.persistence.*;
import org.eclipse.persistence.testing.models.jpa.performance.*;
import org.eclipse.persistence.testing.framework.*;
/**
* This test compares the concurrency of updating Address.
*/
public class JPAUpdateAddressConcurrencyComparisonTest extends ConcurrentPerformanceComparisonTest {
protected List<Address> addresses;
protected String street;
protected int index;
protected long count;
protected int errors;
public JPAUpdateAddressConcurrencyComparisonTest() {
setDescription("This test compares the concurrency of update Address.");
}
public synchronized int incrementIndex() {
this.index++;
if (this.index >= this.addresses.size()) {
this.index = 0;
}
return this.index;
}
/**
* Get list of addresses.
*/
public void setup() {
super.setup();
EntityManager manager = createEntityManager();
this.addresses = manager.createQuery("Select a from Address a").getResultList();
street = this.addresses.get(0).getStreet();
manager.close();
this.index = 0;
this.count = 0;
}
/**
* Update address.
*/
public void runTask() throws Exception {
EntityManager manager = createEntityManager();
manager.getTransaction().begin();
Address address = manager.find(Address.class, this.addresses.get(incrementIndex()).getId());
count++;
address.setStreet(street + count);
try {
manager.getTransaction().commit();
} catch (Exception exception) {
this.errors++;
System.out.println("" + this.errors + ":" + exception);
}
manager.close();
}
}