Mercurial > dive4elements > gnv-client

annotate gnv/src/main/java/de/intevation/gnv/action/LoadAction.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 java.io.IOException;
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12 import java.io.InputStream;
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13 import java.util.List;
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14
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15 import javax.servlet.http.HttpServletRequest;
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16 import javax.servlet.http.HttpServletResponse;
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17
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18 import org.apache.commons.fileupload.FileItemIterator;
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19 import org.apache.commons.fileupload.FileItemStream;
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20 import org.apache.commons.fileupload.servlet.ServletFileUpload;
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21 import org.apache.log4j.Logger;
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22 import org.apache.struts.action.ActionForm;
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23 import org.apache.struts.action.ActionForward;
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24 import org.apache.struts.action.ActionMapping;
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25 import org.w3c.dom.Document;
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26
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27 import de.intevation.gnv.action.sessionmodel.SessionModel;
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28 import de.intevation.gnv.action.sessionmodel.SessionModelFactory;
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29 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClient;
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30 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClientFactory;
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31 import de.intevation.gnv.artifactdatabase.client.exception.ArtifactDatabaseClientException;
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32 import de.intevation.gnv.artifactdatabase.objects.Artifact;
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33 import de.intevation.gnv.artifactdatabase.objects.ArtifactFactory;
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34 import de.intevation.gnv.util.ArtifactNamespaceContext;
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35 import de.intevation.gnv.util.XMLUtils;
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36
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37 /**
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38 * This controller is called for reloading projects from xml files. It waits for
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39 * an xml document named 'document' and feeds the artifact server with this
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40 * document. After a successful feed, the artifact description is fetched and
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41 * displayed in the gui.
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42 *
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43 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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44 */
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45 public class LoadAction extends ArtifactDatabaseActionBase {
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46
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47 public static final String RESOURCE_UPLOAD_FAILURE = "upload.failure";
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48 public static final String RESOURCE_INVALID_ARTIFACT = "invalid.artifact";
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49
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50 /**
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51 * the logger, used to log exceptions and additonaly information
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52 */
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53 private static Logger logger = Logger.getLogger(LoadAction.class);
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54
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55 /**
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56 * Constructor
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57 */
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58 public LoadAction() {
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59 super();
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60 }
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61
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62 @Override
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63 public ActionForward execute(
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64 ActionMapping mapping,
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65 ActionForm form,
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66 HttpServletRequest request,
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67 HttpServletResponse response)
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68 throws Exception
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69 {
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70 if (isSessionExhausted(request)) {
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71 return sessionExhaustedForward(mapping, form, request, response);
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72 }
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73
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74 logger.info("Import artifact.");
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75
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76 ServletFileUpload upload = new ServletFileUpload();
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77 Document artifactDocument = null;
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78
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79 try {
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80 FileItemIterator iter = upload.getItemIterator(request);
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81 while (iter.hasNext()) {
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82 FileItemStream item = (FileItemStream) iter.next();
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83 String name = item.getFieldName();
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84
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85 // the file input field of our form is named 'document'
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86 if (name.equals("document")) {
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87 InputStream stream = item.openStream();
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88
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89 if (stream.available() == 0) {
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90 logger.error("No artifact document found.");
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91 request.setAttribute(
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92 CommunicationKeys.REQUEST_EXCEPTION_PROJECT,
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93 RESOURCE_UPLOAD_FAILURE);
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94
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95 return super.getExceptionForward(mapping);
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96 }
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97
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98 artifactDocument = XMLUtils.readDocument(stream);
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99 if (artifactDocument == null) {
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100 request.setAttribute(
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101 CommunicationKeys.REQUEST_EXCEPTION_PROJECT,
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102 RESOURCE_INVALID_ARTIFACT);
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103
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104 return super.getExceptionForward(mapping);
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105 }
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106
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107 try {
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108 ArtifactDatabaseClientFactory adcf =
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109 ArtifactDatabaseClientFactory.getInstance();
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110 ArtifactDatabaseClient adc =
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111 adcf.getArtifactDatabaseClient(getLocale(request));
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112 ArtifactFactory factory = (ArtifactFactory)
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113 (( List)adc.getArtifactFactories()).get(0);
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114
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115 SessionModelFactory sf =
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116 SessionModelFactory.getInstance();
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117 SessionModel sm = sf.getSessionModel(request);
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118 sm.selectArtifactFactory(factory.getId());
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119
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120 Document describe = adc.doImport(
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121 factory,
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122 artifactDocument);
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123
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124 String uuid = XMLUtils.xpathString(
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125 describe,
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126 "/art:result/art:uuid/@value",
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127 ArtifactNamespaceContext.INSTANCE);
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128 String hash = XMLUtils.xpathString(
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129 describe,
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130 "/art:result/art:hash/@value",
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131 ArtifactNamespaceContext.INSTANCE);
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132
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133 Artifact artifact = new Artifact(uuid, hash);
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134 sm.setCurrentArtifact(artifact);
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135
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136 if (logger.isDebugEnabled()) {
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137 logger.debug(
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138 "Imported artifact UUID: "+artifact.getId());
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139 logger.debug(
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140 "Imported artifact HASH: "+artifact.getHash());
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141 }
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142 }
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143 catch (ArtifactDatabaseClientException adce) {
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144 logger.error(adce, adce);
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145 request.setAttribute(
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146 CommunicationKeys.REQUEST_EXCEPTION_MESSAGE_ID,
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147 adce.getMessage());
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148
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149 // XXX
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150 return super.getExceptionForward(mapping);
673
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151 }
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152
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153 return new DescribeUIAction().execute(
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154 mapping, form, request, response);
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155 }
670
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156 }
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157 }
673
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158 catch (IOException ioe) {
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159 logger.error(ioe, ioe);
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160 request.setAttribute(
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161 CommunicationKeys.REQUEST_EXCEPTION_PROJECT,
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162 ioe.getMessage());
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163
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164 return super.getExceptionForward(mapping);
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165 }
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166
673
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167 // no document found or not valid
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168 logger.error("Upload failure: No document found or invalid.");
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169
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170 request.setAttribute(
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171 CommunicationKeys.REQUEST_EXCEPTION_PROJECT,
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172 RESOURCE_UPLOAD_FAILURE);
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173
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174 return super.getExceptionForward(mapping);
670
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175 }
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176 }
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177 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org