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/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.core;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
/**
* This class provides a scheduling rule that can be used to ensure exclusive access
* to the resources of a project under the control of a repository provider. When a
* RepositoryProviderSchedulingRule is held, the holding thread may still modify resources
* within the project. However, resources in other projects are not contained by a
* RepositoryProviderSchedulingRule.
*/
public class RepositoryProviderSchedulingRule implements ISchedulingRule {
private RepositoryProvider provider;
public RepositoryProviderSchedulingRule(RepositoryProvider provider) {
this.provider = provider;
}
public RepositoryProvider getProvider() {
return provider;
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.jobs.ISchedulingRule#contains(org.eclipse.core.runtime.jobs.ISchedulingRule)
*/
public boolean contains(ISchedulingRule rule) {
if (rule instanceof RepositoryProviderSchedulingRule) {
// In general, RepositoryProviderSchedulingRule can contain other RepositoryProviderSchedulingRules
RepositoryProvider otherProvider = ((RepositoryProviderSchedulingRule)rule).getProvider();
if (otherProvider == getProvider()) return true;
} else if (rule instanceof IResource) {
// Rules can contain resource modifications in the provider's project
return getProvider().getProject().contains(rule);
}
return false;
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.jobs.ISchedulingRule#isConflicting(org.eclipse.core.runtime.jobs.ISchedulingRule)
*/
public boolean isConflicting(ISchedulingRule rule) {
if (rule instanceof RepositoryProviderSchedulingRule) {
// In general, RepositoryProviderSchedulingRules on the same provider conflict
if (((RepositoryProviderSchedulingRule)rule).getProvider() == getProvider()) {
// We can use identity for the check since a RepositoryProvider
// is only created once for each project
return true;
}
}
return false;
}
}
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