SystemBundleActivator


1   /*******************************************************************************
2    * Copyright (c) 2003, 2005 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  
12  package org.eclipse.osgi.framework.internal.core;
13  
14  import java.util.Dictionary  ;
15  import java.util.Hashtable  ;
16  import org.eclipse.osgi.framework.debug.FrameworkDebugOptions;
17  import org.osgi.framework.*;
18  import org.osgi.service.condpermadmin.ConditionalPermissionAdmin;
19  
20  /**
21   * This class activates the System Bundle.
22   */
23  
24  public class SystemBundleActivator implements BundleActivator {
25      protected BundleContext context;
26      protected SystemBundle bundle;
27      protected Framework framework;
28      protected ServiceRegistration packageAdmin;
29      protected ServiceRegistration permissionAdmin;
30      protected ServiceRegistration condPermAdmin;
31      protected ServiceRegistration startLevel;
32      protected ServiceRegistration debugOptions;
33  
34      public SystemBundleActivator() {
35      }
36  
37      public void start(BundleContext context) throws Exception   {
38          this.context = context;
39          bundle = (SystemBundle) context.getBundle();
40          framework = bundle.framework;
41  
42          if (framework.packageAdmin != null)
43              packageAdmin = register(Constants.OSGI_PACKAGEADMIN_NAME, framework.packageAdmin);
44          if (framework.permissionAdmin != null)
45              permissionAdmin = register(Constants.OSGI_PERMISSIONADMIN_NAME, framework.permissionAdmin);
46          if (framework.startLevelManager != null)
47              startLevel = register(Constants.OSGI_STARTLEVEL_NAME, framework.startLevelManager);
48          if (framework.condPermAdmin != null)
49              condPermAdmin = register(ConditionalPermissionAdmin.class.getName(), framework.condPermAdmin);
50          FrameworkDebugOptions dbgOptions = null;
51          if ((dbgOptions = FrameworkDebugOptions.getDefault()) != null)
52              debugOptions = register(org.eclipse.osgi.service.debug.DebugOptions.class.getName(), dbgOptions);
53  
54          // Always call the adaptor.frameworkStart() at the end of this method.
55          framework.adaptor.frameworkStart(context);
56          // attempt to resolve all bundles
57          // this is done after the adaptor.frameworkStart has been called
58          // this should be the first time the resolver State is accessed
59          framework.packageAdmin.setResolvedBundles(bundle);
60      }
61  
62      public void stop(BundleContext context) throws Exception   {
63          // Always call the adaptor.frameworkStop() at the begining of this method.
64          framework.adaptor.frameworkStop(context);
65  
66          if (packageAdmin != null)
67              packageAdmin.unregister();
68          if (permissionAdmin != null)
69              permissionAdmin.unregister();
70          if (condPermAdmin != null)
71              condPermAdmin.unregister();
72          if (startLevel != null)
73              startLevel.unregister();
74          if (debugOptions != null)
75              debugOptions.unregister();
76  
77          framework = null;
78          bundle = null;
79          this.context = null;
80      }
81  
82      /**
83       * Register a service object.
84       *
85       */
86      protected ServiceRegistration register(String   name, Object   service) {
87          Hashtable   properties = new Hashtable  (7);
88          Dictionary   headers = bundle.getHeaders();
89          properties.put(Constants.SERVICE_VENDOR, headers.get(Constants.BUNDLE_VENDOR));
90          properties.put(Constants.SERVICE_RANKING, new Integer  (Integer.MAX_VALUE));
91          properties.put(Constants.SERVICE_PID, bundle.getBundleId() + "." + service.getClass().getName()); //$NON-NLS-1$
92          return context.registerService(name, service, properties);
93      }
94  
95  }
96
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