| /******************************************************************************* |
| * Copyright (c) 2005-2007 Cognos Incorporated, IBM Corporation and others |
| * 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: |
| * Cognos Incorporated - initial API and implementation |
| * IBM Corporation - bug fixes and enhancements |
| *******************************************************************************/ |
| |
| package org.eclipse.equinox.http.registry.internal; |
| |
| import org.eclipse.core.runtime.IExtensionRegistry; |
| import org.osgi.framework.*; |
| import org.osgi.service.packageadmin.PackageAdmin; |
| import org.osgi.util.tracker.ServiceTracker; |
| import org.osgi.util.tracker.ServiceTrackerCustomizer; |
| |
| public class Activator implements BundleActivator, ServiceTrackerCustomizer { |
| |
| private ServiceTracker httpServiceTracker; |
| private ServiceTracker packageAdminTracker; |
| private ServiceTracker registryTracker; |
| |
| private PackageAdmin packageAdmin; |
| private IExtensionRegistry registry; |
| private BundleContext context; |
| |
| public void start(BundleContext context) throws Exception { |
| this.context = context; |
| packageAdminTracker = new ServiceTracker(context, PackageAdmin.class.getName(), this); |
| packageAdminTracker.open(); |
| |
| registryTracker = new ServiceTracker(context, IExtensionRegistry.class.getName(), this); |
| registryTracker.open(); |
| } |
| |
| public void stop(BundleContext context) throws Exception { |
| packageAdminTracker.close(); |
| packageAdminTracker = null; |
| registryTracker.close(); |
| registryTracker = null; |
| this.context = null; |
| } |
| |
| public Object addingService(ServiceReference reference) { |
| Object service = context.getService(reference); |
| |
| if (service instanceof PackageAdmin && packageAdmin == null) |
| packageAdmin = (PackageAdmin) service; |
| |
| if (service instanceof IExtensionRegistry && registry == null) |
| registry = (IExtensionRegistry) service; |
| |
| if (packageAdmin != null && registry != null) { |
| httpServiceTracker = new HttpServiceTracker(context, packageAdmin, registry); |
| httpServiceTracker.open(); |
| } |
| |
| return service; |
| } |
| |
| public void modifiedService(ServiceReference reference, Object service) { |
| // ignore |
| } |
| |
| public void removedService(ServiceReference reference, Object service) { |
| if (service == packageAdmin) |
| packageAdmin = null; |
| |
| if (service == registry) |
| registry = null; |
| |
| if (packageAdmin == null || registry == null) { |
| if (httpServiceTracker != null) { |
| httpServiceTracker.close(); |
| httpServiceTracker = null; |
| } |
| } |
| context.ungetService(reference); |
| } |
| |
| } |