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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) 2013, 2015 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.osgi.storage.bundlefile;

import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.Enumeration;
import org.eclipse.osgi.container.Module;
import org.eclipse.osgi.internal.hookregistry.BundleFileWrapperFactoryHook;
import org.eclipse.osgi.storage.BundleInfo;

/**
 * A {@link BundleFile bundle file} decorator.
 * 
 * Clients wishing to modify or extend the behavior of a bundle file at runtime
 * should extend this class instead. A hook is provided by the related {@link
 * BundleFileWrapperFactoryHook abstract factory} class in response to a
 * {@link BundleFileWrapperFactoryHook#wrapBundleFile(BundleFile,
 * BundleInfo.Generation, boolean) call} from the framework.
 */
public class BundleFileWrapper extends BundleFile {
	private final BundleFile bundleFile;

	/**
	 * Creates a new BundleFileWrapper instance wrapping the
	 * given {@link BundleFile bundle file}.
	 *
	 * @param bundleFile - The bundle file to wrap.
	 * @throws NullPointerException - If the bundle file is null.
	 */
	public BundleFileWrapper(BundleFile bundleFile) {
		super(bundleFile.getBaseFile());
		this.bundleFile = bundleFile;
	}

	@Override
	public File getFile(String path, boolean nativeCode) {
		return bundleFile.getFile(path, nativeCode);
	}

	@Override
	public BundleEntry getEntry(String path) {
		return bundleFile.getEntry(path);
	}

	@Override
	public Enumeration getEntryPaths(String path) {
		return bundleFile.getEntryPaths(path);
	}

	@Override
	public Enumeration getEntryPaths(String path, boolean recurse) {
		return bundleFile.getEntryPaths(path, recurse);
	}

	/**
	 * Get the wrapped bundle file.
	 *
	 * @return The wrapped bundle file.
	 */
	public BundleFile getBundleFile() {
		return bundleFile;
	}

	@Override
	public void close() throws IOException {
		bundleFile.close();
	}

	@Override
	public void open() throws IOException {
		bundleFile.open();
	}

	@Override
	public boolean containsDir(String dir) {
		return bundleFile.containsDir(dir);
	}

	@Override
	protected URL createResourceURL(BundleEntry bundleEntry, Module hostModule, int index, String path) {
		return bundleFile.createResourceURL(bundleEntry, hostModule, index, path);
	}

}