| /******************************************************************************* |
| * Copyright (c) 2007, 2008 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.equinox.internal.p2.installer; |
| |
| import org.osgi.framework.*; |
| import org.osgi.service.packageadmin.PackageAdmin; |
| |
| /** |
| * The activator class controls the plug-in life cycle |
| */ |
| public class InstallerActivator implements BundleActivator { |
| // The plug-in ID |
| public static final String PI_INSTALLER = "org.eclipse.equinox.p2.installer"; //$NON-NLS-1$ |
| // The shared instance |
| private static InstallerActivator plugin; |
| |
| private BundleContext context; |
| |
| private PackageAdmin packageAdmin = null; |
| |
| private ServiceReference packageAdminRef = null; |
| |
| /** |
| * Returns the shared instance |
| * |
| * @return the shared instance |
| */ |
| public static InstallerActivator getDefault() { |
| return plugin; |
| } |
| |
| /** |
| * The constructor |
| */ |
| public InstallerActivator() { |
| //nothing to do |
| } |
| |
| public Bundle getBundle(String symbolicName) { |
| if (packageAdmin == null) |
| return null; |
| Bundle[] bundles = packageAdmin.getBundles(symbolicName, null); |
| if (bundles == null) |
| return null; |
| //Return the first bundle that is not installed or uninstalled |
| for (int i = 0; i < bundles.length; i++) { |
| if ((bundles[i].getState() & (Bundle.INSTALLED | Bundle.UNINSTALLED)) == 0) { |
| return bundles[i]; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the bundle context for this bundle. |
| * @return the bundle context |
| */ |
| public BundleContext getContext() { |
| return context; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext) |
| */ |
| public void start(BundleContext aContext) throws Exception { |
| this.context = aContext; |
| plugin = this; |
| packageAdminRef = context.getServiceReference(PackageAdmin.class.getName()); |
| packageAdmin = (PackageAdmin) context.getService(packageAdminRef); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext) |
| */ |
| public void stop(BundleContext aContext) throws Exception { |
| context.ungetService(packageAdminRef); |
| packageAdmin = null; |
| packageAdminRef = null; |
| plugin = null; |
| } |
| |
| } |