1 package org.eclipse.tm.internal.tcf;

     2 

     3 import org.osgi.framework.Bundle;

     4 import org.osgi.framework.BundleActivator;

     5 import org.osgi.framework.BundleContext;

     6 import org.osgi.service.packageadmin.PackageAdmin;

     7 import org.osgi.util.tracker.ServiceTracker;

     8 

     9 public class Activator implements  BundleActivator {

    10     

    11     private static final String TCF_INTEGRATION_BUNDLE_ID = "org.eclipse.tm.tcf";

    12 

    13     public void start(BundleContext context) throws Exception {

    14         /*

    15          * Activate TCF Eclipse integration bundle "org.eclipse.tm.tcf".

    16          * It must be activated explicitly, because default activation through

    17          * class loading may never happen - most client don't need classes from that bundle.

    18          */

    19         ServiceTracker tracker = new ServiceTracker(context, PackageAdmin.class.getName(), null);

    20         tracker.open();

    21         Bundle[] bundles = ((PackageAdmin)tracker.getService()).getBundles(TCF_INTEGRATION_BUNDLE_ID, null);

    22         int cnt = 0;

    23         if (bundles != null) {

    24             for (Bundle bundle : bundles) {

    25                 if ((bundle.getState() & (Bundle.INSTALLED | Bundle.UNINSTALLED)) == 0) {

    26                     bundle.start(Bundle.START_TRANSIENT);

    27                     cnt++;

    28                 }

    29             }

    30         }

    31         if (cnt != 1) throw new Exception("Invalid or missing bundle: " + TCF_INTEGRATION_BUNDLE_ID);

    32     }

    33 

    34     public void stop(BundleContext context) throws Exception {

    35     }

    36 }