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/*******************************************************************************
* Copyright (c) 2008, 2009 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.core.internal;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.jpt.core.JpaProject;
import org.eclipse.jpt.utility.Command;
import org.eclipse.jpt.utility.internal.synchronizers.CallbackSynchronousSynchronizer;
import org.eclipse.jpt.utility.synchronizers.CallbackSynchronizer;
/**
* Adapt the "callback synchronizer" interface to the JPA project "updater"
* interface.
* <p>
* This updater will "update" the JPA project immediately and not return until
* the "update" and all resulting "updates" are complete. This implementation
* should be used sparingly and for as short a time as possible, as it increases
* the probability of deadlocks. A deadlock can occur when a JPA project is
* updated from multiple threads and various resources are locked in varying
* orders.
*/
public class SynchronousJpaProjectUpdater
extends AbstractSynchronizerJpaProjectUpdater
{
public SynchronousJpaProjectUpdater(JpaProject jpaProject) {
super(jpaProject);
}
@Override
protected CallbackSynchronizer buildSynchronizer() {
return new CallbackSynchronousSynchronizer(this.buildCommand());
}
protected Command buildCommand() {
return new Command() {
public void execute() {
SynchronousJpaProjectUpdater.this.jpaProject.update(new NullProgressMonitor());
}
};
}
}
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