Mercurial > dive4elements > gnv-client

annotate gnv/src/main/java/de/intevation/gnv/action/WMSAction.java @ 676:707e142e7d44

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Improved ExceptionHandling during WMS-Publishing. gnv/trunk@807 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Fri, 19 Mar 2010 13:15:59 +0000
parents ccd47d9887ec
children 8315b0a40329
rev   line source
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1 package de.intevation.gnv.action;
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2
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3 import java.util.ArrayList;
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4 import java.util.Collection;
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5 import java.util.Iterator;
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6
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7 import javax.servlet.http.HttpServletRequest;
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8 import javax.servlet.http.HttpServletResponse;
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9
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10 import org.apache.log4j.Logger;
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11 import org.apache.struts.action.ActionForm;
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12 import org.apache.struts.action.ActionForward;
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13 import org.apache.struts.action.ActionMapping;
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14 import org.w3c.dom.Document;
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16 import de.intevation.gnv.action.sessionmodel.DiagrammOptions;
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17 import de.intevation.gnv.action.sessionmodel.SessionModel;
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18 import de.intevation.gnv.action.sessionmodel.SessionModelFactory;
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19 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClient;
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20 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClientFactory;
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21 import de.intevation.gnv.artifactdatabase.objects.ArtifactObject;
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22 import de.intevation.gnv.artifactdatabase.objects.DefaultInputParameter;
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23 import de.intevation.gnv.artifactdatabase.objects.InputParameter;
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24 import de.intevation.gnv.artifactdatabase.objects.OutputMode;
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25 import de.intevation.gnv.artifactdatabase.objects.OutputParameter;
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26 import de.intevation.gnv.util.XMLUtils;
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27
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28 /**
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29 * @author Ingo Weinzierl (ingo.weinzierl@intevation.de)
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30 */
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31 public class WMSAction extends DescribeUIAction {
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32
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33 public static final String XPATH_MAPSERVER_PATH =
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34 "/art:meta/art:mapserver/art:server/text()";
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35
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36 public static final String XPATH_MAPSERVER_MAPFILE =
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37 "/art:meta/art:mapserver/art:map/text()";
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38
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39 public static final String XPATH_LAYER_TITLE =
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40 "/art:meta/art:layer/art:title/text()";
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41
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42 /**
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43 * the logger, used to log exceptions and additonaly information
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44 */
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45 private static Logger logger = Logger.getLogger(WMSAction.class);
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46
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47 /**
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48 * Constructor
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49 */
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50 public WMSAction() {
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51 super();
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52 }
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53
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54 @Override
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55 public ActionForward execute(ActionMapping mapping, ActionForm form,
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56 HttpServletRequest request,
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57 HttpServletResponse response) throws Exception {
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58 logger.debug("WMSAction.execute");
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59 try {
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60 SessionModel sm = SessionModelFactory.getInstance().getSessionModel(
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61 request);
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62
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63 OutputMode outputMode = sm.getOutputMode("wms");
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64 Collection<InputParameter> ips = null;
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65 if (outputMode != null) {
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66 Collection<OutputParameter> inputParameter =
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67 outputMode.getOutputParameters();
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68
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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 DiagrammOptions diagrammOptions = new DiagrammOptions();
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73
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74 int params = 0;
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75 while (it.hasNext()) {
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76 String name = it.next().getName();
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77 String[] values = request.getParameterValues(name);
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78 String value = request.getParameter(name);
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79 InputParameter ip = new DefaultInputParameter(name,
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80 values);
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81 ips.add(ip);
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82
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83 if (value != null) {
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84 ++params;
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85 diagrammOptions.setValue(name, value);
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86 }
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87 }
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88
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89 if (params > 0) {
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90 sm.setDiagrammOptions(diagrammOptions);
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91 }
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92 }
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93 }
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94
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95 ArtifactObject artifact = sm.getCurrentArtifact();
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96
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97 ArtifactDatabaseClientFactory factory =
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98 ArtifactDatabaseClientFactory.getInstance();
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99 ArtifactDatabaseClient adc = factory.getArtifactDatabaseClient(
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100 getLocale(request));
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101 ArtifactObject artifactfactory = sm.getSelectedArtifactFactory();
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102
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103 // do wms publishing
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104 Document meta = adc.publishWMS(artifactfactory,artifact,ips);
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105 String mapserverPath = XMLUtils.getStringXPath(
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106 meta, XPATH_MAPSERVER_PATH);
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107 String mapfilePath = XMLUtils.getStringXPath(
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108 meta, XPATH_MAPSERVER_MAPFILE);
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109 String layer = XMLUtils.getStringXPath(
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110 meta, XPATH_LAYER_TITLE);
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111 layer = layer != null ? layer : artifact.getId();
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112
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113 if (logger.isDebugEnabled()) {
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114 logger.debug("Mapserver path: " + mapserverPath);
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115 logger.debug("Mapfile path: " + mapfilePath);
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116 logger.debug("Layer title: " + layer);
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117 }
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118
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119 request.setAttribute("wms", true);
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120 request.setAttribute("mapserver", mapserverPath);
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121 request.setAttribute("mapfile", mapfilePath);
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122 request.setAttribute("layer", layer);
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123 if (mapserverPath != null &&
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124 mapfilePath != null &&
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125 layer != null){
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126 return super.execute(mapping, form, request, response);
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127 }else{
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128 return super.getExceptionForward(mapping);
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129 }
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130 }
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131 catch (Exception e) {
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132 logger.error(e, e);
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133 request.setAttribute(
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134 CommunicationKeys.REQUEST_EXCEPTION_MESSAGE_ID,
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135 e.getMessage());
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136
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137 return super.getExceptionForward(mapping);
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138 }
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139 }
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140
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141 }
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142 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org