activator.java

Introduction to Sybase IQ.pdf

/* Copyright (c) 2005-2008 Jan S. Rellermeyer
 * Systems Group,
 * Department of Computer Science, ETH Zurich.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *    - Redistributions of source code must retain the above copyright notice,
 *      this list of conditions and the following disclaimer.
 *    - Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *    - Neither the name of ETH Zurich nor the names of its contributors may be
 *      used to endorse or promote products derived from this software without
 *      specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

package ch.ethz.iks.slp.impl;

import org.osgi.framework.Bundle;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceFactory;
import org.osgi.framework.ServiceRegistration;

/**
 * Bundle Activator
 * 
 * @author Jan S. Rellermeyer, ETH Zurich
 */
public class Activator implements BundleActivator {

	/**
	 * 
	 * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
	 */
	public void start(final BundleContext context) throws Exception {

		// create the platform abstraction layer but do not initialize!!!
		SLPCore.platform = new OSGiPlatformAbstraction(context);

		// register the service factories so each consumer gets its own Locator/Activator instance
		context.registerService("ch.ethz.iks.slp.Advertiser", new ServiceFactory() {
			public Object getService(Bundle bundle, ServiceRegistration registration) {
				SLPCore.init();
				SLPCore.initMulticastSocket();
				return new AdvertiserImpl();
			}
			public void ungetService(Bundle bundle, ServiceRegistration registration, Object service) {
			}
		}, null);
		context.registerService("ch.ethz.iks.slp.Locator", new ServiceFactory() {
			public Object getService(Bundle bundle, ServiceRegistration registration) {
				SLPCore.init();
				return new LocatorImpl();
			}
			public void ungetService(Bundle bundle,	ServiceRegistration registration, Object service) {
			}
		}, null);
	}

	/**
	 * 
	 * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
	 */
	public void stop(final BundleContext context) throws Exception {

	}
}