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.ProvisioningJob;
  23 import org.eclipse.equinox.p2.operations.UpdateOperation;
  24 import org.eclipse.equinox.p2.repository.IRepositoryManager;
  25 import org.eclipse.equinox.p2.repository.metadata.IMetadataRepositoryManager;
  26 import org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob;
  27 import org.eclipse.equinox.p2.ui.ProvisioningUI;
  28 import org.eclipse.jface.wizard.WizardDialog;
  29 import org.osgi.framework.BundleContext;
  30 import org.osgi.framework.ServiceReference;
  31
  32 import eu.etaxonomy.taxeditor.TaxonomicEditorPlugin;
  33 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  34
  35 /**
  36  * UpdateHandler invokes the check for updates UI
  37  *
  38  * @since 3.4
  39  */
  40 public class UpdateHandler extends PreloadingRepositoryHandler {
  41
  42
  43     @Override
  44     protected void doExecute(LoadMetadataRepositoryJob job) {
  45
  46         UpdateOperation operation = new UpdateOperation(ProvisioningUI.getDefaultUI().getSession());
  47
  48         // check for updates
  49         checkForUpdates(operation);
  50
  51         ProvisioningJob provisioningJob = operation.getProvisioningJob(null);
  52         if (provisioningJob == null) {
  53             MessagingUtils.messageDialog("Error in performing update",
  54                     operation,
  55                     "ProvisioningJob could not be created." + System.getProperty("line.separator") +
  56                     "Either this application does not support p2 software installation or this application has been launched from within the Eclipse IDE",
  57                     null,
  58                     false);
  59
  60         } else if (getProvisioningUI().getPolicy().continueWorkingWithOperation(operation, getShell())) {
  61             if (UpdateSingleIUWizard.validFor(operation)) {
  62                 // Special case for only updating a single root
  63                 UpdateSingleIUWizard wizard = new UpdateSingleIUWizard(getProvisioningUI(), operation);
  64                 WizardDialog dialog = new WizardDialog(getShell(), wizard);
  65                 dialog.create();
  66                 dialog.open();
  67             } else {
  68                 // Open the normal version of the update wizard
  69                 getProvisioningUI().openUpdateWizard(false, operation, job);
  70             }
  71         }
  72     }
  73
  74
  75     /**
  76      * @param monitor
  77      * @return
  78      */
  79     private IStatus checkForUpdates(UpdateOperation operation) {
  80
  81         // force refresh all the caches before
  82         IMetadataRepositoryManager metaManager = ProvUI.getMetadataRepositoryManager(ProvisioningUI.getDefaultUI().getSession());
  83         URI[] repos = metaManager.getKnownRepositories(IRepositoryManager.REPOSITORIES_ALL);
  84         for(URI repo : repos) {
  85             try {
  86                 metaManager.refreshRepository(repo, null);
  87             } catch (ProvisionException pe) {
  88                 IStatus errorStatus = new Status(IStatus.ERROR, TaxonomicEditorPlugin.PLUGIN_ID,
  89                         "Error occured while reloading cache.", pe);
  90
  91             } catch (OperationCanceledException oce) {
  92                 IStatus errorStatus = new Status(IStatus.ERROR, TaxonomicEditorPlugin.PLUGIN_ID,
  93                         "Error occured while reloading cache.", oce);
  94             }
  95         }
  96         BundleContext bundleContext = TaxonomicEditorPlugin.getContext();
  97         ServiceReference reference = bundleContext.getServiceReference(IProvisioningAgent.SERVICE_NAME);
  98         if (reference == null) {
  99             IStatus errorStatus = new Status(IStatus.ERROR, TaxonomicEditorPlugin.PLUGIN_ID,
 100                     "No provisioning agent found.  This application is not set up for updates.");
 101             return errorStatus;
 102         }
 103
 104         try {
 105             return operation.resolveModal(null);
 106         } finally {
 107             bundleContext.ungetService(reference);
 108         }
 109     }
 110 }