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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) 2009, 2017 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.serviceregistry;

import java.util.Map;
import org.osgi.framework.*;

/**
 * ServiceEvent subtype for MODIFIED_ENDMATCH computation.
 *
 */
class ModifiedServiceEvent extends ServiceEvent {
	private static final long serialVersionUID = -5373850978543026102L;
	private final ServiceEvent modified;
	private final ServiceEvent modifiedEndMatch;
	private final Map previousProperties;

	/**
	 * Create a ServiceEvent containing the service properties prior to modification.
	 *
	 * @param reference Reference to service with modified properties.
	 * @param previousProperties Service properties prior to modification.
	 */
	ModifiedServiceEvent(ServiceReference reference, Map previousProperties) {
		super(ServiceEvent.MODIFIED, reference);
		this.modified = new ServiceEvent(ServiceEvent.MODIFIED, reference);
		this.modifiedEndMatch = new ServiceEvent(ServiceEvent.MODIFIED_ENDMATCH, reference);
		this.previousProperties = previousProperties;
	}

	/**
	 * Return the service event of type MODIFIED.
	 *
	 * @return The service event of type MODIFIED.
	 */
	ServiceEvent getModifiedEvent() {
		return modified;
	}

	/**
	 * Return the service event of type MODIFIED_ENDMATCH.
	 *
	 * @return The service event of type MODIFIED_ENDMATCH.
	 */
	ServiceEvent getModifiedEndMatchEvent() {
		return modifiedEndMatch;
	}

	/**
	 * Return if the specified filter matches the previous service
	 * properties.
	 *
	 * @param filter The filer to evaluate using the previous service
	 * properties.
	 * @return True is the filter matches the previous service properties.
	 */
	boolean matchPreviousProperties(Filter filter) {
		/* We use matches here since ServiceProperties already
		 * does case insensitive lookup.
		 */
		return filter.matches(previousProperties);
	}
}