eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/view/datasource/handler/ChangeConnectionHandler.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10
  11 package eu.etaxonomy.taxeditor.view.datasource.handler;
  12
  13 import org.eclipse.core.commands.AbstractHandler;
  14 import org.eclipse.core.commands.ExecutionEvent;
  15 import org.eclipse.jface.viewers.ISelection;
  16 import org.eclipse.jface.viewers.IStructuredSelection;
  17 import org.eclipse.ui.handlers.HandlerUtil;
  18
  19 import eu.etaxonomy.taxeditor.datasource.CdmDataSourceRepository;
  20 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  21 import eu.etaxonomy.taxeditor.store.CdmStore;
  22 import eu.etaxonomy.taxeditor.view.datasource.CdmMetaDataAwareDataSourceContainer;
  23
  24 /**
  25  * <p>ChangeConnectionHandler class.</p>
  26  *
  27  * @author n.hoffmann
  28  * @created 15.04.2009
  29  * @version 1.0
  30  */
  31 public class ChangeConnectionHandler extends AbstractHandler {
  32
  33         /* (non-Javadoc)
  34          * @see eu.etaxonomy.taxeditor.store.datasource.handler.AbstractDataSourceHandler#specificExecute(org.eclipse.core.commands.ExecutionEvent)
  35          */
  36         /** {@inheritDoc} */
  37         public Object execute(ExecutionEvent event) {
  38                 ISelection selection = HandlerUtil.getCurrentSelection(event);
  39
  40                 if(selection != null && selection instanceof IStructuredSelection){
  41                         CdmMetaDataAwareDataSourceContainer container = (CdmMetaDataAwareDataSourceContainer) ((IStructuredSelection) selection).getFirstElement();
  42
  43                         if(CdmStore.isConnecting()){
  44                                 MessagingUtils.warningDialog("Already connecting", this, "You are currently connecting to a different datasource already.");
  45                                 return null;
  46                         }
  47
  48                         try {
  49                                 container.getCdmSource().checkConnection();
  50                                 boolean confirmed = MessagingUtils.confirmDialog("Confirm Datasource Connection", "Do you really want to connect to this datasource?\n\n"
  51                                                 + container.getCdmSource().getName());
  52
  53                                 if(confirmed){
  54                                         CdmDataSourceRepository.changeDataSource(container.getCdmSource());
  55                                 }
  56                         } catch (Exception e) {
  57                                 MessagingUtils.warningDialog("Chosen datasource is not available", this, "This could mean that either the database server is " +
  58                                                 "not running or the machine is not reachable.\n\n" +
  59                                                 "Please also make sure that you are connected to the network when trying to connect to a remote datasource.");
  60                                 MessagingUtils.warn(getClass(), e);
  61                                 return null;
  62                         }
  63                 }
  64
  65                 return null;
  66         }
  67 }