| //------------------------------------------------------------------------------ |
| // Copyright (c) 2005, 2006 IBM Corporation and others. |
| // 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: |
| // IBM Corporation - initial implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.persistence.util; |
| |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.jobs.ISchedulingRule; |
| import org.eclipse.core.runtime.jobs.MultiRule; |
| import org.eclipse.epf.uma.MethodLibrary; |
| |
| /** |
| * Scheduling rule used to lock a library during a operation and defer the |
| * broadcasting of resource change event until the operation is finished. |
| * |
| * @author Phong Nguyen Le - Aug 15, 2006 |
| * @since 1.0 |
| */ |
| public class LibrarySchedulingRule implements ISchedulingRule { |
| private MethodLibrary library; |
| |
| /** |
| * @param lib |
| */ |
| public LibrarySchedulingRule(MethodLibrary lib) { |
| this.library = lib; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.core.runtime.jobs.ISchedulingRule#contains(org.eclipse.core.runtime.jobs.ISchedulingRule) |
| */ |
| public boolean contains(ISchedulingRule rule) { |
| if (this == rule) { |
| return true; |
| } |
| if (rule instanceof LibrarySchedulingRule) { |
| return ((LibrarySchedulingRule) rule).library == library; |
| } |
| if (rule instanceof MultiRule) { |
| MultiRule mrule = (MultiRule) rule; |
| ISchedulingRule[] childRules = mrule.getChildren(); |
| for (int i=0; i<childRules.length; i++) { |
| if (! (childRules[i] instanceof IResource)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| // allow any IResource rule to nest within the same thread |
| // |
| return rule instanceof IResource; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.core.runtime.jobs.ISchedulingRule#isConflicting(org.eclipse.core.runtime.jobs.ISchedulingRule) |
| */ |
| public boolean isConflicting(ISchedulingRule rule) { |
| return equals(rule); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| public boolean equals(Object obj) { |
| return this == obj |
| || (obj instanceof LibrarySchedulingRule && ((LibrarySchedulingRule) obj).library == library); |
| } |
| |
| @Override |
| public int hashCode() { |
| return library.hashCode(); |
| } |
| } |