JobActivator


1   /*******************************************************************************
2    * Copyright (c) 2005, 2006 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    * 
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.core.internal.jobs;
12  
13  import java.util.Hashtable  ;
14  import org.eclipse.core.runtime.jobs.IJobManager;
15  import org.osgi.framework.*;
16  
17  /**
18   * The Jobs plugin class.
19   */
20  public class JobActivator implements BundleActivator {
21  
22      /**
23       * Eclipse property. Set to <code>false</code> to avoid registering JobManager
24       * as an OSGi service.
25       */
26      private static final String   PROP_REGISTER_JOB_SERVICE = "eclipse.service.jobs"; //$NON-NLS-1$
27  
28      /**
29       * The bundle associated this plug-in
30       */
31      private static BundleContext bundleContext;
32  
33      /**
34       * This plugin provides a JobManager service.
35       */
36      private ServiceRegistration jobManagerService = null;
37  
38      /**
39       * This method is called upon plug-in activation
40       */
41      public void start(BundleContext context) throws Exception   {
42          bundleContext = context;
43          JobOSGiUtils.getDefault().openServices();
44  
45          boolean shouldRegister = !"false".equalsIgnoreCase(context.getProperty(PROP_REGISTER_JOB_SERVICE)); //$NON-NLS-1$
46          if (shouldRegister)
47              registerServices();
48      }
49  
50      /**
51       * This method is called when the plug-in is stopped
52       */
53      public void stop(BundleContext context) throws Exception   {
54          unregisterServices();
55          JobManager.shutdown();
56          JobOSGiUtils.getDefault().closeServices();
57          bundleContext = null;
58      }
59  
60      static BundleContext getContext() {
61          return bundleContext;
62      }
63  
64      private void registerServices() {
65          jobManagerService = bundleContext.registerService(IJobManager.class.getName(), JobManager.getInstance(), new Hashtable  ());
66      }
67  
68      private void unregisterServices() {
69          if (jobManagerService != null) {
70              jobManagerService.unregister();
71              jobManagerService = null;
72          }
73      }
74  }
75
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