eu.etaxonomy.taxeditor.application/src/main/java/eu/etaxonomy/taxeditor/update/UpdateHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2009 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 eu.etaxonomy.taxeditor.update;
  12
  13 import java.net.URI;
  14
  15 import org.eclipse.core.runtime.IStatus;
  16 import org.eclipse.core.runtime.OperationCanceledException;
  17 import org.eclipse.core.runtime.Status;
  18 import org.eclipse.equinox.internal.p2.ui.ProvUI;
  19 import org.eclipse.equinox.internal.p2.ui.dialogs.UpdateSingleIUWizard;
  20 import org.eclipse.equinox.p2.core.IProvisioningAgent;
  21 import org.eclipse.equinox.p2.core.ProvisionException;
  22 import org.eclipse.equinox.p2.operations.UpdateOperation;
  23 import org.eclipse.equinox.p2.repository.IRepositoryManager;
  24 import org.eclipse.equinox.p2.repository.metadata.IMetadataRepositoryManager;
  25 import org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob;
  26 import org.eclipse.equinox.p2.ui.ProvisioningUI;
  27 import org.eclipse.jface.wizard.WizardDialog;
  28 import org.osgi.framework.BundleContext;
  29 import org.osgi.framework.ServiceReference;
  30
  31 import eu.etaxonomy.taxeditor.TaxonomicEditorPlugin;
  32
  33 /**
  34  * UpdateHandler invokes the check for updates UI
  35  *
  36  * @since 3.4
  37  */
  38 public class UpdateHandler extends PreloadingRepositoryHandler {
  39
  40
  41     @Override
  42     protected void doExecute(LoadMetadataRepositoryJob job) {
  43
  44         UpdateOperation operation = new UpdateOperation(ProvisioningUI.getDefaultUI().getSession());
  45
  46         // check for updates
  47         checkForUpdates(operation);
  48         if (getProvisioningUI().getPolicy().continueWorkingWithOperation(operation, getShell())) {
  49             if (UpdateSingleIUWizard.validFor(operation)) {
  50                 // Special case for only updating a single root
  51                 UpdateSingleIUWizard wizard = new UpdateSingleIUWizard(getProvisioningUI(), operation);
  52                 WizardDialog dialog = new WizardDialog(getShell(), wizard);
  53                 dialog.create();
  54                 dialog.open();
  55             } else {
  56                 // Open the normal version of the update wizard
  57                 getProvisioningUI().openUpdateWizard(false, operation, job);
  58             }
  59         }
  60     }
  61
  62
  63     /**
  64      * @param monitor
  65      * @return
  66      */
  67     private IStatus checkForUpdates(UpdateOperation operation) {
  68
  69         // force refresh all the caches before
  70         IMetadataRepositoryManager metaManager = ProvUI.getMetadataRepositoryManager(ProvisioningUI.getDefaultUI().getSession());
  71         URI[] repos = metaManager.getKnownRepositories(IRepositoryManager.REPOSITORIES_ALL);
  72         for(URI repo : repos) {
  73             try {
  74                 metaManager.refreshRepository(repo, null);
  75             } catch (ProvisionException pe) {
  76                 IStatus errorStatus = new Status(IStatus.ERROR, TaxonomicEditorPlugin.PLUGIN_ID,
  77                         "Error occured while reloading cache.", pe);
  78
  79             } catch (OperationCanceledException oce) {
  80                 IStatus errorStatus = new Status(IStatus.ERROR, TaxonomicEditorPlugin.PLUGIN_ID,
  81                         "Error occured while reloading cache.", oce);
  82             }
  83         }
  84         BundleContext bundleContext = TaxonomicEditorPlugin.getContext();
  85         ServiceReference reference = bundleContext.getServiceReference(IProvisioningAgent.SERVICE_NAME);
  86         if (reference == null) {
  87             IStatus errorStatus = new Status(IStatus.ERROR, TaxonomicEditorPlugin.PLUGIN_ID,
  88                     "No provisioning agent found.  This application is not set up for updates.");
  89             return errorStatus;
  90         }
  91
  92         try {
  93             return operation.resolveModal(null);
  94         } finally {
  95             bundleContext.ungetService(reference);
  96         }
  97     }
  98
  99 }