| /******************************************************************************* |
| * Copyright (c) 2008 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.utility; |
| |
| import org.eclipse.core.runtime.jobs.ISchedulingRule; |
| |
| /** |
| * A job scheduling rule that conflicts only with itself. |
| */ |
| public final class SimpleSchedulingRule |
| implements ISchedulingRule |
| { |
| |
| // singleton |
| private static final SimpleSchedulingRule INSTANCE = new SimpleSchedulingRule(); |
| |
| /** |
| * Return the singleton. |
| */ |
| public static ISchedulingRule instance() { |
| return INSTANCE; |
| } |
| |
| /** |
| * Ensure single instance. |
| */ |
| private SimpleSchedulingRule() { |
| super(); |
| } |
| |
| public boolean contains(ISchedulingRule rule) { |
| return rule == this; |
| } |
| |
| public boolean isConflicting(ISchedulingRule rule) { |
| return rule == this; |
| } |
| |
| } |