| /******************************************************************************* |
| * Copyright (c) 2005 IBM Corporation. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipsei.equinox.event.mapper; |
| |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.ServiceReference; |
| import org.osgi.service.log.LogReaderService; |
| import org.osgi.util.tracker.ServiceTracker; |
| |
| /** |
| * @version $Revision: 1.4 $ |
| */ |
| public class LogReaderServiceTracker extends ServiceTracker { |
| private final LogReaderServiceListener listener; |
| private ServiceReference reference; |
| |
| public LogReaderServiceTracker(BundleContext context, |
| LogReaderServiceListener listener) { |
| super(context, LogReaderService.class.getName(), null); |
| this.listener = listener; |
| } |
| |
| public Object addingService(ServiceReference reference) { |
| Object object = super.addingService(reference); |
| if ((object != null) && (this.reference == null) |
| && (object instanceof LogReaderService)) { |
| this.reference = reference; |
| listener.logReaderServiceAdding(reference, |
| (LogReaderService) object); |
| } |
| return object; |
| } |
| |
| public void removedService(ServiceReference reference, Object service) { |
| if ((service != null) && (this.reference.equals(reference)) |
| && (service instanceof LogReaderService)) { |
| listener.logReaderServiceRemoved(reference, |
| (LogReaderService) service); |
| this.reference = null; |
| } |
| super.removedService(reference, service); |
| //this method calls ungetService() |
| } |
| } |