Mercurial > dive4elements > gnv-client

annotate gnv/src/main/java/de/intevation/gnv/action/DoOutputAction.java @ 34:25fdec8b4c69

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Added Global Errorhandling to the GNV-Client gnv/trunk@170 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Fri, 02 Oct 2009 08:38:57 +0000
parents 07e9c137a2f1
children 4405f31bbc30
rev   line source
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1 /**
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2 *
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3 */
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4 package de.intevation.gnv.action;
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5
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6 import java.io.OutputStream;
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7 import java.util.ArrayList;
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8 import java.util.Collection;
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9 import java.util.Iterator;
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10
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11 import javax.servlet.http.HttpServletRequest;
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12 import javax.servlet.http.HttpServletResponse;
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13
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14 import org.apache.log4j.Logger;
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15 import org.apache.struts.action.ActionForm;
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16 import org.apache.struts.action.ActionForward;
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17 import org.apache.struts.action.ActionMapping;
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18
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19 import de.intevation.gnv.action.sessionmodel.SessionModel;
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20 import de.intevation.gnv.action.sessionmodel.SessionModelFactory;
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21 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClient;
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22 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClientFactory;
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23 import de.intevation.gnv.artifactdatabase.objects.ArtifactDescription;
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24 import de.intevation.gnv.artifactdatabase.objects.DefaultInputParameter;
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25 import de.intevation.gnv.artifactdatabase.objects.InputParameter;
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26 import de.intevation.gnv.artifactdatabase.objects.OutputMode;
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27 import de.intevation.gnv.artifactdatabase.objects.OutputParameter;
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28
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29 /**
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30 * @author Tim Englich <tim.englich@intevation.de>
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31 *
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32 */
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33 public class DoOutputAction extends ArtifactDatabaseActionBase {
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34
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35 /**
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36 * the logger, used to log exceptions and additonaly information
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37 */
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38 private static Logger log = Logger.getLogger(DoOutputAction.class);
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39 /**
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40 * Constructor
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41 */
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42 public DoOutputAction() {
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43 super();
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44 }
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45
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46
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47 /**
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48 * @see de.intevation.gnv.action.ArtifactDatabaseActionBase#execute(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
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49 */
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50 @Override
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51 public ActionForward execute(ActionMapping mapping, ActionForm form,
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52 HttpServletRequest request, HttpServletResponse response)
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53 throws Exception {
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54 log.debug("DoOutputAction.execute");
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55 try {
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56 String target = request.getParameter("target");
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57 String mimeType = request.getParameter("mimetype");
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58
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59 log.debug("Target: "+target);
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60 log.debug("MimeType: "+mimeType);
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61
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62 // TODO Check if is propper;
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63
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64 SessionModel sm = SessionModelFactory.getInstance().getSessionModel(request);
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65 OutputMode outputMode = sm.getOutputMode(target);
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66 if (outputMode != null && outputMode.getMimeType().equals(mimeType)){
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67 Collection<OutputParameter> inputParameter =outputMode.getOutputParameters();
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68 Collection<InputParameter> ips = null;
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69 if (inputParameter != null){
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70 ips = new ArrayList<InputParameter>(inputParameter.size());
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71 Iterator<OutputParameter> it = inputParameter.iterator();
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72 while (it.hasNext()){
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73 String name = it.next().getName();
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74 String[] values = request.getParameterValues(name);
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75 InputParameter ip = new DefaultInputParameter(name, values);
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76 ips.add(ip);
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77 }
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78 }
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79
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80 ArtifactDatabaseClient adc = ArtifactDatabaseClientFactory.getInstance().getArtifactDatabaseClient();
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81
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82 this.setHeaders(target, mimeType, response, request);
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83
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84 OutputStream outputStream = response.getOutputStream();
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85 adc.doOutput(sm.getSelectedArtifactFactory(), sm.getCurrentArtifact(), outputStream, target, mimeType, ips);
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86
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87 outputStream.flush();
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88 outputStream.close();
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89 }else{
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90 if (outputMode == null){
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91 log.error("Outputmode wird nicht unterst�tzt.");
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92 }else if (!outputMode.getMimeType().equals(mimeType)){
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93 log.error("MimeType "+mimeType+" wird nicht unterst�tzt.");
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94 }
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95 // TODO FIXME: Fehlerbehandlung
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96 }
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97 return super.execute(mapping, form, request, response);
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98 } catch (Exception e) {
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99 log.error(e,e);
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100 request.setAttribute(CommunicationKeys.REQUEST_EXCEPTION_MESSAGE_ID, e.getMessage());
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101 return super.getExceptionForward(mapping);
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102 }
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103 }
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104
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105 protected void setHeaders(String target, String mimeType, HttpServletResponse response, HttpServletRequest request){
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106 response.setHeader("Content-Type", mimeType);
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107 }
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108
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109
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110 }
http://dive4elements.wald.intevation.org