bundles/org.eclipse.equinox.log.test/src/org/eclipse/equinox/log/test/Activator.java

/*******************************************************************************
 * Copyright (c) 2007, 2009 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.log.test;

import org.osgi.framework.*;
import org.osgi.service.packageadmin.PackageAdmin;

public class Activator implements BundleActivator {

	private static PackageAdmin packageAdmin;
	private static BundleContext bundleContext;
	private ServiceReference packageAdminRef;

	public void start(BundleContext context) throws Exception {
		packageAdminRef = context.getServiceReference(PackageAdmin.class.getName());
		setPackageAdmin((PackageAdmin) context.getService(packageAdminRef));
		setBundleContext(context);
	}

	public void stop(BundleContext context) throws Exception {
		setBundleContext(null);
		setPackageAdmin(null);
		context.ungetService(packageAdminRef);
	}

	private static synchronized void setBundleContext(BundleContext context) {
		bundleContext = context;
	}

	private static synchronized void setPackageAdmin(PackageAdmin service) {
		packageAdmin = service;
	}

	static synchronized BundleContext getBundleContext() {
		return bundleContext;
	}

	static synchronized 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;
	}

	static synchronized void refreshPackages() {
		if (packageAdmin == null)
			throw new IllegalStateException("PackageAdmin not registered"); //$NON-NLS-1$

		packageAdmin.refreshPackages(null);
	}
}