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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) OSGi Alliance (2012, 2019). All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.osgi.framework.dto;

import java.util.Map;

import org.osgi.dto.DTO;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceReference;

/**
 * Data Transfer Object for a ServiceReference.
 * 
 * {@code ServiceReferenceDTO}s for all registered services can be obtained from
 * a {@link FrameworkDTO}. A {@link ServiceReference} can be adapted to a
 * {@code ServiceReferenceDTO}. A started Bundle can be adapted to provide a
 * {@code ServiceReferenceDTO[]} of the services registered by the Bundle. A
 * {@code ServiceReferenceDTO} obtained from a framework must convert service
 * property values which are not valid value types for DTOs to type
 * {@code String} using {@code String.valueOf(Object)}.
 * 
 * @author $Id: 8ac26a24b8adacdcd09f441dcdfc8d6a27bbaabd $
 * @NotThreadSafe
 */
public class ServiceReferenceDTO extends DTO {
    /**
	 * The id of the service.
	 * 
	 * @see Constants#SERVICE_ID
	 */
    public long                id;

    /**
	 * The id of the bundle that registered the service.
	 * 
	 * @see ServiceReference#getBundle()
	 */
    public long                bundle;

    /**
	 * The properties for the service.
	 * 
	 * The value type must be a numerical type, Boolean, String, DTO or an array
	 * of any of the former.
	 * 
	 * @see ServiceReference#getProperty(String)
	 */
    public Map properties;

    /**
	 * The ids of the bundles that are using the service.
	 * 
	 * @see ServiceReference#getUsingBundles()
	 */
    public long[]              usingBundles;
}