org.eclipse.core.resources.IResourceDeltaVisitor Maven / Gradle / Ivy

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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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/*******************************************************************************
 *  Copyright (c) 2000, 2009 IBM Corporation and others.
 *
 *  This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License 2.0
 *  which accompanies this distribution, and is available at
 *  https://www.eclipse.org/legal/epl-2.0/
 *
 *  SPDX-License-Identifier: EPL-2.0
 *
 *  Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.core.resources;

import org.eclipse.core.runtime.CoreException;

/**
 * An objects that visits resource deltas.
 * 
 * Usage:
 * 
 *  * class Visitor implements IResourceDeltaVisitor {
 *     public boolean visit(IResourceDelta delta) {
 *         switch (delta.getKind()) {
 *         case IResourceDelta.ADDED :
 *             // handle added resource
 *             break;
 *         case IResourceDelta.REMOVED :
 *             // handle removed resource
 *             break;
 *         case IResourceDelta.CHANGED :
 *             // handle changed resource
 *             break;
 *         }
 *     return true;
 *     }
 * }
 * IResourceDelta rootDelta = ...;
 * rootDelta.accept(new Visitor());
 * 
 * 
 * Clients may implement this interface.
 * 
 *
 * @see IResource#accept(IResourceVisitor)
 */
public interface IResourceDeltaVisitor {
	/**
	 * Visits the given resource delta.
	 *
	 * @return true if the resource delta's children should
	 *		be visited; false if they should be skipped.
	 * @exception CoreException if the visit fails for some reason.
	 */
	boolean visit(IResourceDelta delta) throws CoreException;
}