Mercurial > dive4elements > gnv-client

annotate gnv/src/main/java/de/intevation/gnv/action/PreviousArtifactStepAction.java @ 580:377da78ed36b

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Display an exception if an error occured while stepping back to a former state (issue183). gnv/trunk@719 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 01 Mar 2010 15:52:24 +0000
parents df78178e1180
children 15ac78a91d1b
rev   line source
394
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1 package de.intevation.gnv.action;
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2
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3 import de.intevation.gnv.action.sessionmodel.SessionModel;
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4 import de.intevation.gnv.action.sessionmodel.SessionModelFactory;
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5
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6 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClient;
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7 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClientFactory;
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8
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9 import de.intevation.gnv.artifactdatabase.objects.ArtifactDescription;
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10 import de.intevation.gnv.artifactdatabase.objects.ArtifactObject;
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11
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12 import javax.servlet.http.HttpServletRequest;
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13 import javax.servlet.http.HttpServletResponse;
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14
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15 import org.apache.log4j.Logger;
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17 import org.apache.struts.action.ActionForm;
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18 import org.apache.struts.action.ActionForward;
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19 import org.apache.struts.action.ActionMapping;
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22 /**
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23 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de>
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24 *
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25 */
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26 public class PreviousArtifactStepAction extends DescribeUIAction {
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28
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29 public static final String URL_STATE_KEY = "target";
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30
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31 private static Logger logger =
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32 Logger.getLogger(PreviousArtifactStepAction.class);
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33
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34
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35 public PreviousArtifactStepAction() {
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36 super();
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37 }
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39
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40 @Override
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41 public ActionForward execute(
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42 ActionMapping mapping,
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43 ActionForm form,
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44 HttpServletRequest request,
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45 HttpServletResponse response
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46 ) throws Exception {
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47
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48 String id = request.getSession().getId();
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49
409
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50 SessionModel session = SessionModelFactory.getInstance().getSessionModel(
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51 request);
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52
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53 ArtifactDescription ad = session.getArtifactDescription();
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54 if (ad == null) {
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55 logger.warn("Session timed out.");
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56 request.setAttribute(
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57 CommunicationKeys.REQUEST_EXCEPTION_MESSAGE_ID,
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58 "SessionTimeout has occured");
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59 new FetchArtifactFactoriesAction().execute(
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60 mapping, form, request, response);
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61
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62 return super.execute(mapping, form, request, response);
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63 }
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64
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65 // TODO check if target is reachable
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409
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67 ArtifactDatabaseClientFactory f =
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68 ArtifactDatabaseClientFactory.getInstance();
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69 ArtifactDatabaseClient client =
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70 f.getArtifactDatabaseClient(getLocale(request));
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71
409
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72 ArtifactObject artifactFactory = session.getSelectedArtifactFactory();
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73 ArtifactObject currentArtifact = session.getCurrentArtifact();
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74
409
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75 String target = (String) request.getParameter(URL_STATE_KEY);
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76 logger.debug("Step back to previous state: " + target);
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77
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78 try {
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79 client.doAdvance(
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80 artifactFactory,
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81 currentArtifact,
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82 target
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83 );
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84 }
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85 catch (Exception e) {
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86 logger.error(e, e);
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87 request.setAttribute(
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88 CommunicationKeys.REQUEST_EXCEPTION_MESSAGE_ID,
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89 e.getMessage());
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90 }
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91
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92 return super.execute(mapping, form, request, response);
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93 }
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94 }
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95 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org