Mercurial > dive4elements > gnv-client

annotate gnv/src/main/java/de/intevation/gnv/action/DoOutputAction.java @ 991:33198e55371c

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Improved session handling in the gui. If a session has timed out, the user gets to the start point - the fis selection. gnv/trunk@1192 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 10 Jun 2010 15:13:08 +0000
parents af22fa5567a6
children 28a0628b11b0
rev   line source
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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
df78178e1180 Moved user interface creation to an own action. This makes avoids code duplication and makes it easier to write new action to handle special interactions, because there is no need for parsing the describe document and creating the user interface after this.
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9 import de.intevation.gnv.artifactdatabase.objects.DefaultInputParameter;
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10 import de.intevation.gnv.artifactdatabase.objects.InputParameter;
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11 import de.intevation.gnv.artifactdatabase.objects.OutputMode;
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12 import de.intevation.gnv.artifactdatabase.objects.OutputParameter;
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13
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14 import java.io.OutputStream;
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16 import java.util.ArrayList;
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17 import java.util.Collection;
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18 import java.util.Iterator;
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19
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20 import javax.servlet.http.HttpServletRequest;
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21 import javax.servlet.http.HttpServletResponse;
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22
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23 import org.apache.log4j.Logger;
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24
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25 import org.apache.struts.action.ActionForm;
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26 import org.apache.struts.action.ActionForward;
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27 import org.apache.struts.action.ActionMapping;
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28
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29 /**
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30 * This controller calls the out operation of the server directly. Html img-tags
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31 * in jsp pages use this action to fetch charts and histograms.
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32 *
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33 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
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34 *
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35 */
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36 public class DoOutputAction extends ArtifactDatabaseActionBase {
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37
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38 /**
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39 * the logger, used to log exceptions and additonaly information
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40 */
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41 private static Logger log = Logger.getLogger(DoOutputAction.class);
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42
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43 /**
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44 * Constructor
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45 */
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46 public DoOutputAction() {
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47 super();
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48 }
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49
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50
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51 @Override
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52 public ActionForward execute(ActionMapping mapping, ActionForm form,
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53 HttpServletRequest request,
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54 HttpServletResponse response) throws Exception {
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55 if (isSessionExhausted(request)) {
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56 return sessionExhaustedForward(mapping, form, request, response);
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57 }
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58
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59 log.debug("DoOutputAction.execute");
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60 try {
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61 String target = request.getParameter("target");
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62 String mimeType = request.getParameter("mimetype");
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63 String mode = request.getParameter("mode");
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64
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65 log.debug("Target: " + target);
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66 log.debug("MimeType: " + mimeType);
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67 log.debug("ExportMode: " + mode);
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68
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69 // TODO Check if is propper;
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70
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71 SessionModel sm = SessionModelFactory.getInstance()
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72 .getSessionModel(request);
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73 OutputMode outputMode = sm.getOutputMode(target);
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74 if (outputMode != null && outputMode.getMimeType().equals(mimeType)) {
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75 Collection<OutputParameter> inputParameter = outputMode
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76 .getOutputParameters();
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77 Collection<InputParameter> ips = null;
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78 if (inputParameter != null) {
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79 ips = new ArrayList<InputParameter>(inputParameter.size()+1);
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80 Iterator<OutputParameter> it = inputParameter.iterator();
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81 while (it.hasNext()) {
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82 String name = it.next().getName();
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83 String[] values = request.getParameterValues(name);
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84 InputParameter ip = new DefaultInputParameter(name,
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85 values);
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86 ips.add(ip);
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87 }
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88
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89 if (request.getParameter("bintype") != null) {
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90 InputParameter ip = new DefaultInputParameter(
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91 "bintype", request.getParameterValues("bintype"));
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92 ips.add(ip);
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93 }
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94 }
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95
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96 ArtifactDatabaseClient adc = ArtifactDatabaseClientFactory
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97 .getInstance()
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98 .getArtifactDatabaseClient(getLocale(request));
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99
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100 this.setHeaders(target, mimeType, response, request);
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101
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102 OutputStream outputStream = response.getOutputStream();
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103 adc.doOutput(
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104 sm.getSelectedArtifactFactory(),
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105 sm.getCurrentArtifact(),
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106 outputStream,
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107 target,
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108 mode,
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109 mimeType,
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110 ips);
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111
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112 outputStream.flush();
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113 outputStream.close();
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114 } else {
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115 if (outputMode == null) {
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116 log.error("Outputmode is not supported.");
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117 } else if (!outputMode.getMimeType().equals(mimeType)) {
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118 log.error("MimeType " + mimeType
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119 + " wis not supported.");
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120 }
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121 // TODO FIXME: Fehlerbehandlung
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122 }
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123 return super.execute(mapping, form, request, response);
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124 } catch (Exception e) {
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125 log.error(e, e);
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126 request.setAttribute(
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127 CommunicationKeys.REQUEST_EXCEPTION_MESSAGE_ID, e
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128 .getMessage());
34
25fdec8b4c69 Added Global Errorhandling to the GNV-Client
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129 return super.getExceptionForward(mapping);
13
2535158e2687 Chartoutput Added to the View
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130 }
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131 }
36
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132
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133 protected void setHeaders(String target, String mimeType,
38
fccf90761825 Format Code to max 80 Chars per Row better Formatter choosen
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134 HttpServletResponse response,
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135 HttpServletRequest request) {
29
bba8fd97e549 Export and Diagrammoptions integrated into GUI
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136 response.setHeader("Content-Type", mimeType);
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137 }
13
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138
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139 }
409
df78178e1180 Moved user interface creation to an own action. This makes avoids code duplication and makes it easier to write new action to handle special interactions, because there is no need for parsing the describe document and creating the user interface after this.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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140 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org