Mercurial > dive4elements > gnv-client

annotate gnv/src/main/java/de/intevation/gnv/action/DoOutputAction.java @ 1022:28a0628b11b0

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Added license file and license header. gnv/trunk@1258 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 02 Nov 2010 17:15:08 +0000
parents 33198e55371c
children
rev   line source
1022
28a0628b11b0 Added license file and license header.
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1 /*
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2 * Copyright (c) 2010 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8
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9 package de.intevation.gnv.action;
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10
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11 import de.intevation.gnv.action.sessionmodel.SessionModel;
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12 import de.intevation.gnv.action.sessionmodel.SessionModelFactory;
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13
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14 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClient;
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15 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClientFactory;
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16
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17 import de.intevation.gnv.artifactdatabase.objects.DefaultInputParameter;
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18 import de.intevation.gnv.artifactdatabase.objects.InputParameter;
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19 import de.intevation.gnv.artifactdatabase.objects.OutputMode;
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20 import de.intevation.gnv.artifactdatabase.objects.OutputParameter;
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21
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22 import java.io.OutputStream;
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23
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24 import java.util.ArrayList;
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25 import java.util.Collection;
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26 import java.util.Iterator;
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27
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28 import javax.servlet.http.HttpServletRequest;
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29 import javax.servlet.http.HttpServletResponse;
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30
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31 import org.apache.log4j.Logger;
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32
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33 import org.apache.struts.action.ActionForm;
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34 import org.apache.struts.action.ActionForward;
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35 import org.apache.struts.action.ActionMapping;
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36
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37 /**
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38 * This controller calls the out operation of the server directly. Html img-tags
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39 * in jsp pages use this action to fetch charts and histograms.
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40 *
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41 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
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42 *
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43 */
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44 public class DoOutputAction extends ArtifactDatabaseActionBase {
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45
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46 /**
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47 * the logger, used to log exceptions and additonaly information
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48 */
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49 private static Logger log = Logger.getLogger(DoOutputAction.class);
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50
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51 /**
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52 * Constructor
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53 */
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54 public DoOutputAction() {
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55 super();
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56 }
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57
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58
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59 @Override
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60 public ActionForward execute(ActionMapping mapping, ActionForm form,
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61 HttpServletRequest request,
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62 HttpServletResponse response) throws Exception {
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63 if (isSessionExhausted(request)) {
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64 return sessionExhaustedForward(mapping, form, request, response);
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65 }
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66
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67 log.debug("DoOutputAction.execute");
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68 try {
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69 String target = request.getParameter("target");
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70 String mimeType = request.getParameter("mimetype");
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71 String mode = request.getParameter("mode");
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72
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73 log.debug("Target: " + target);
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74 log.debug("MimeType: " + mimeType);
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75 log.debug("ExportMode: " + mode);
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76
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77 // TODO Check if is propper;
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78
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79 SessionModel sm = SessionModelFactory.getInstance()
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80 .getSessionModel(request);
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81 OutputMode outputMode = sm.getOutputMode(target);
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82 if (outputMode != null && outputMode.getMimeType().equals(mimeType)) {
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83 Collection<OutputParameter> inputParameter = outputMode
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84 .getOutputParameters();
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85 Collection<InputParameter> ips = null;
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86 if (inputParameter != null) {
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87 ips = new ArrayList<InputParameter>(inputParameter.size()+1);
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88 Iterator<OutputParameter> it = inputParameter.iterator();
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89 while (it.hasNext()) {
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90 String name = it.next().getName();
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91 String[] values = request.getParameterValues(name);
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92 InputParameter ip = new DefaultInputParameter(name,
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93 values);
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94 ips.add(ip);
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95 }
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96
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97 if (request.getParameter("bintype") != null) {
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98 InputParameter ip = new DefaultInputParameter(
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99 "bintype", request.getParameterValues("bintype"));
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100 ips.add(ip);
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101 }
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102 }
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103
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104 ArtifactDatabaseClient adc = ArtifactDatabaseClientFactory
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105 .getInstance()
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106 .getArtifactDatabaseClient(getLocale(request));
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107
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108 this.setHeaders(target, mimeType, response, request);
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109
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110 OutputStream outputStream = response.getOutputStream();
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111 adc.doOutput(
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112 sm.getSelectedArtifactFactory(),
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113 sm.getCurrentArtifact(),
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114 outputStream,
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115 target,
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116 mode,
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117 mimeType,
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118 ips);
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119
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120 outputStream.flush();
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121 outputStream.close();
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122 } else {
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123 if (outputMode == null) {
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124 log.error("Outputmode is not supported.");
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125 } else if (!outputMode.getMimeType().equals(mimeType)) {
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126 log.error("MimeType " + mimeType
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127 + " wis not supported.");
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128 }
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129 // TODO FIXME: Fehlerbehandlung
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130 }
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131 return super.execute(mapping, form, request, response);
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132 } catch (Exception e) {
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133 log.error(e, e);
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134 request.setAttribute(
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135 CommunicationKeys.REQUEST_EXCEPTION_MESSAGE_ID, e
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136 .getMessage());
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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 protected void setHeaders(String target, String mimeType,
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142 HttpServletResponse response,
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143 HttpServletRequest request) {
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144 response.setHeader("Content-Type", mimeType);
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145 }
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146
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147 }
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.
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148 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org