| /******************************************************************************* |
| * Copyright (c) 2006, 2007 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.core.internal.registry.osgi; |
| |
| import org.eclipse.osgi.service.environment.EnvironmentInfo; |
| import org.eclipse.osgi.service.resolver.PlatformAdmin; |
| import org.osgi.framework.*; |
| |
| /** |
| * The class contains a set of Equinox-specific helper methods. The methods were isolated |
| * into separate class to prevent an attempt to load Equinox classes in a generic OSGi |
| * environment. |
| * |
| * This class uses OSGi services. |
| * |
| * @since org.eclipse.equinox.registry 3.2.100 |
| */ |
| public class EquinoxUtils { |
| |
| /** |
| * Get the command line arguments from the EnvironmentInfo service |
| */ |
| public static String[] getCommandLine(BundleContext context, ServiceReference ref) { |
| if (ref == null) |
| return null; |
| try { |
| EnvironmentInfo environmentInfo = (EnvironmentInfo) context.getService(ref); |
| return environmentInfo == null ? null : environmentInfo.getNonFrameworkArgs(); |
| } finally { |
| context.ungetService(ref); |
| } |
| } |
| |
| /** |
| * Get the time stamp from the PlatformAdmin service. |
| */ |
| public static long getContainerTimestamp(BundleContext context, ServiceReference ref) { |
| if (ref == null) |
| return -1; |
| try { |
| PlatformAdmin admin = (PlatformAdmin) context.getService(ref); |
| return admin == null ? -1 : admin.getState(false).getTimeStamp(); |
| } finally { |
| context.ungetService(ref); |
| } |
| } |
| |
| public static ServiceRegistration registerCommandProvider(BundleContext context) { |
| // try to register the registry command provider |
| try { |
| // refer to the CommandProvider by name here so that even if VM |
| // decides to pre-fetch all referred classes the expection will occur |
| // inside the exception holder |
| return context.registerService("org.eclipse.osgi.framework.console.CommandProvider", new RegistryCommandProvider(), null); //$NON-NLS-1$ |
| } catch (NoClassDefFoundError noClass) { |
| // expected if CommandProvider is not available |
| } |
| return null; |
| } |
| |
| /** |
| * Returns true if OSGi in not available |
| */ |
| public static boolean isActive(String bundleId) { |
| // the try-catch block should take care |
| try { |
| org.osgi.framework.Bundle bundle = OSGIUtils.getDefault().getBundle(bundleId); |
| if (bundle == null) |
| return false; // should never happen |
| return (bundle.getState() == Bundle.ACTIVE); |
| } catch (NoClassDefFoundError noClass) { |
| // expected if OSGi is not available; behave as if contributor is active |
| return true; |
| } |
| } |
| } |