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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) 2019, 2021 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.internal.connect;

import java.io.IOException;
import java.net.URL;
import java.util.Collections;
import java.util.Enumeration;
import org.eclipse.osgi.internal.framework.EquinoxConfiguration;
import org.eclipse.osgi.internal.loader.BundleLoader;
import org.eclipse.osgi.internal.loader.EquinoxClassLoader;
import org.eclipse.osgi.storage.BundleInfo.Generation;

public class DelegatingConnectClassLoader extends EquinoxClassLoader {
	static {
		try {
			ClassLoader.registerAsParallelCapable();
		} catch (Throwable t) {
			// ignore any error
		}
	}
	private final ClassLoader connectClassLoader;

	public DelegatingConnectClassLoader(ClassLoader parent, EquinoxConfiguration configuration, BundleLoader delegate, Generation generation, ClassLoader connectClassLoader) {
		super(parent, configuration, delegate, generation);
		this.connectClassLoader = connectClassLoader;
	}

	@Override
	public Class findLocalClass(String classname) throws ClassNotFoundException {
		if (connectClassLoader == null) {
			return null;
		}
		return connectClassLoader.loadClass(classname);
	}

	@Override
	public URL findLocalResource(String resource) {
		if (connectClassLoader == null) {
			return null;
		}
		return connectClassLoader.getResource(resource);
	}

	@Override
	public Enumeration findLocalResources(String resource) {
		if (connectClassLoader == null) {
			return Collections.emptyEnumeration();
		}
		try {
			return connectClassLoader.getResources(resource);
		} catch (IOException e) {
			return Collections.emptyEnumeration();
		}
	}
}