| /******************************************************************************* |
| * Copyright (c) 2009 SAP AG. |
| * 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: |
| * Eduard Bartsch (SAP AG) - initial API and implementation |
| * Mathias Kinzler (SAP AG) - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.resources.semantic.spi; |
| |
| import org.eclipse.core.runtime.IPath; |
| |
| /** |
| * The default implementation for the {@link ISemanticResourceRuleFactory}. |
| * <p> |
| * This will return the root store of the relevant content provider for any |
| * requested rule. Content providers may chose to override |
| * {@link ISemanticContentProvider#getRuleFactory()} by returning a subclass of |
| * this class to achieve a different behavior. |
| * <p> |
| * The default behavior should be overridden if it causes too much lock |
| * contention. |
| * <p> |
| * Note that a return value of <code>null</code> means that the workspace root |
| * is used as scheduling rule. This behavior is intended as fall-back solution |
| * and should be avoided wherever possible. |
| * <p> |
| * |
| */ |
| public class DefaultSemanticResourceRuleFactory implements ISemanticResourceRuleFactory { |
| |
| protected final ISemanticFileStore rootStore; |
| |
| /** |
| * @param rootStore |
| * the root store of the responsible content provider |
| */ |
| public DefaultSemanticResourceRuleFactory(ISemanticFileStore rootStore) { |
| this.rootStore = rootStore; |
| } |
| |
| public ISemanticFileStore charsetRule(ISemanticFileStore resource) { |
| return this.rootStore; |
| } |
| |
| public ISemanticFileStore copyRule(ISemanticFileStore source, ISemanticFileStore destination) { |
| return (ISemanticFileStore) this.rootStore.getParent(); |
| } |
| |
| public ISemanticFileStore createRule(ISemanticFileStore resource) { |
| return (ISemanticFileStore) this.rootStore.getParent(); |
| } |
| |
| public ISemanticFileStore deleteRule(ISemanticFileStore resource) { |
| return (ISemanticFileStore) this.rootStore.getParent(); |
| } |
| |
| public ISemanticFileStore modifyRule(ISemanticFileStore resource) { |
| return this.rootStore; |
| } |
| |
| public ISemanticFileStore moveRule(ISemanticFileStore source, ISemanticFileStore destination) { |
| IPath sourcePath = source.getPath(); |
| IPath destinationPath = destination.getPath(); |
| |
| int matchingSegments = sourcePath.matchingFirstSegments(destinationPath); |
| if (matchingSegments < rootStore.getPath().segmentCount()) { |
| // either source or destination is outside of this content |
| // provider |
| return null; |
| } |
| return (ISemanticFileStore) this.rootStore.getParent(); |
| } |
| |
| public ISemanticFileStore refreshRule(ISemanticFileStore resource) { |
| return (ISemanticFileStore) this.rootStore.getParent(); |
| } |
| |
| public ISemanticFileStore validateEditRule(ISemanticFileStore[] resources) { |
| return (ISemanticFileStore) this.rootStore.getParent(); |
| } |
| |
| } |