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/*
* Copyright (c) 1998, 2021 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 v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// John Vandale - initial API and implementation
// 12/14/2017-3.0 Tomas Kraus
// - 291546: Performance degradation due to usage of Vector in DescriptorEventManager
package org.eclipse.persistence.testing.tests.workbenchintegration;
import java.io.File;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import org.eclipse.persistence.descriptors.ClassDescriptor;
import org.eclipse.persistence.descriptors.DescriptorEventAdapter;
import org.eclipse.persistence.descriptors.DescriptorEventListener;
import org.eclipse.persistence.sessions.factories.XMLProjectReader;
import org.eclipse.persistence.sessions.factories.XMLProjectWriter;
import org.eclipse.persistence.testing.models.employee.domain.Employee;
import org.eclipse.persistence.testing.models.employee.relational.EmployeeProject;
/**
* Bug 295383
* Test to ensure that NonSynchronizedVector is used instead of java.util.Vector
* for event listeners collection when coming from project XML.
*/
public class EventListenerCollectionTest extends org.eclipse.persistence.testing.framework.TestCase {
protected org.eclipse.persistence.sessions.Project project = null;
public static final String FILENAME = "EventListenersCollectionShouldBeNonSynchronizedTest.xml";
public EventListenerCollectionTest() {
setDescription("Ensure event listeners collection is a NonSynchronizedVector.");
}
@Override
public void setup() {
project = new EmployeeProject();
ClassDescriptor descriptor =
project.getDescriptors().get(Employee.class);
descriptor.getEventManager().addListener(new DescriptorEventAdapter());
}
@Override
public void test() {
XMLProjectWriter.write(FILENAME, project);
project = XMLProjectReader.read(FILENAME, getClass().getClassLoader());
}
@Override
public void verify() {
ClassDescriptor descriptor =
project.getDescriptors().get(Employee.class);
List<DescriptorEventListener> listeners = descriptor.getEventManager().getEventListeners();
//test that the collection type is a NonSynchronizedVector
if (!(listeners instanceof CopyOnWriteArrayList)) {
throwError("Descriptor from project XML with event listeners does not use CopyOnWriteArrayList for event listeners collection.");
}
}
@Override
public void reset() {
File file = new File(FILENAME);
file.delete();
}
}