Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/DescribeCollectionServiceImpl.java @ 797:cc3f481e9484

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Introduced GwtOpenLayers to bring up maps. flys-client/trunk@2314 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 08 Jul 2011 14:56:02 +0000
parents cd8603aaa730
children 374712890b94
rev   line source
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1 package de.intevation.flys.client.server;
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2
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3 import java.util.ArrayList;
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4 import java.util.HashMap;
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5 import java.util.List;
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6 import java.util.Map;
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7
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8 import javax.xml.xpath.XPathConstants;
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9
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10 import org.w3c.dom.Document;
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11 import org.w3c.dom.Element;
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12 import org.w3c.dom.NodeList;
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13
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14 import com.google.gwt.user.server.rpc.RemoteServiceServlet;
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15
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16 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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17 import de.intevation.artifacts.common.utils.ClientProtocolUtils;
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18 import de.intevation.artifacts.common.utils.XMLUtils;
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19
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20 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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21 import de.intevation.artifacts.httpclient.http.HttpClient;
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22 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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23 import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler;
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24
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25 import de.intevation.flys.client.shared.exceptions.ServerException;
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26 import de.intevation.flys.client.shared.model.Collection;
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27 import de.intevation.flys.client.shared.model.CollectionItem;
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28 import de.intevation.flys.client.shared.model.DefaultCollection;
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29 import de.intevation.flys.client.shared.model.DefaultCollectionItem;
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30 import de.intevation.flys.client.shared.model.DefaultFacet;
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31 import de.intevation.flys.client.shared.model.DefaultTheme;
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32 import de.intevation.flys.client.shared.model.ChartMode;
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33 import de.intevation.flys.client.shared.model.ExportMode;
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34 import de.intevation.flys.client.shared.model.MapMode;
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35 import de.intevation.flys.client.shared.model.ReportMode;
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36 import de.intevation.flys.client.shared.model.Facet;
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37 import de.intevation.flys.client.shared.model.OutputMode;
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38 import de.intevation.flys.client.shared.model.Theme;
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39 import de.intevation.flys.client.shared.model.ThemeList;
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40 import de.intevation.flys.client.client.services.DescribeCollectionService;
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41
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42
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43 /**
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44 * This service implements a method that queries the DESCRIBE document of a
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45 * specific collection and returns a Collection object with the information of
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46 * the document.
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47 *
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48 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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49 */
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50 public class DescribeCollectionServiceImpl
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51 extends RemoteServiceServlet
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52 implements DescribeCollectionService
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53 {
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54 /** The error message key that is thrown if an error occured while
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55 * describe() a Collection.*/
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56 public static final String ERROR_DESCRIBE_COLLECTION =
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57 "error_describe_collection";
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58
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59 public static final String XPATH_FACETS = "art:facets/art:facet";
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62 public Collection describe(String uuid, String serverUrl, String locale)
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63 throws ServerException
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64 {
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65 System.out.println("DescribeCollectionServiceImpl.describe");
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66
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67 Document describe = ClientProtocolUtils.newDescribeCollectionDocument(
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68 uuid);
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69
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70 HttpClient client = new HttpClientImpl(serverUrl, locale);
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71
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72 try {
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73 Document response = (Document) client.doCollectionAction(
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74 describe, uuid, new DocumentResponseHandler());
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75
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76 Collection c = parseCollection(response);
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77
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78 if (c == null) {
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79 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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80 }
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81
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82 System.out.println("Collection successfully parsed.");
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83
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84 return c;
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85 }
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86 catch (ConnectionException ce) {
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87 System.err.println(ce.getLocalizedMessage());
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88 }
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90 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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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 * This method takes the DESCRIBE document of the Collections describe()
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96 * operation and extracts the information about the collection itself and
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97 * the collection items.
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98 *
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99 * @param description The DESCRIBE document of the Collections describe()
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100 * operation.
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101 *
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102 * @return a Collection with CollectionItems.
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103 */
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104 protected Collection parseCollection(Document description) {
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105 System.out.println("AddArtifactServiceImpl.parseCollection");
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106
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107 if (description == null) {
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108 System.err.println("The DESCRIBE of the Collection is null!");
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109 return null;
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110 }
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111
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112 String uuid = XMLUtils.xpathString(
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113 description,
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114 "art:artifact-collection/@art:uuid",
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115 ArtifactNamespaceContext.INSTANCE);
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116
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117 String ttlStr = XMLUtils.xpathString(
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118 description,
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119 "art:artifact-collection/@art:ttl",
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120 ArtifactNamespaceContext.INSTANCE);
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121
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122 if (uuid.length() == 0 || ttlStr.length() == 0) {
99
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123 System.err.println("Found an invalid Collection!");
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124 return null;
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125 }
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126
587
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127
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128 long ttl = -1;
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129 try {
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130 ttl = Long.valueOf(ttlStr);
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131 }
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132 catch (NumberFormatException nfe) {
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133 // do nothing
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134 }
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135
524
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136 Map<String, ThemeList> themeList = parseThemeLists(description);
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137
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138 Collection c = !themeList.isEmpty()
587
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139 ? new DefaultCollection(uuid, ttl, themeList)
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140 : new DefaultCollection(uuid, ttl);
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141
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142 NodeList items = (NodeList) XMLUtils.xpath(
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143 description,
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144 "art:artifact-collection/art:artifacts/art:artifact",
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145 XPathConstants.NODESET,
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146 ArtifactNamespaceContext.INSTANCE);
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147
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148 if (items == null || items.getLength() == 0) {
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149 System.out.println("No collection item found for this collection.");
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150
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151 return c;
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152 }
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153
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154 int size = items.getLength();
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155
5c3d685546a6 Added a new service to describe collections.
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156 for (int i = 0; i < size; i++) {
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157 CollectionItem item = parseCollectionItem((Element)items.item(i));
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158
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159 if (item != null) {
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160 c.addItem(item);
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161 }
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162 }
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163
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164 System.out.println(
5c3d685546a6 Added a new service to describe collections.
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165 "Found " + c.getItemLength() + " collection items " +
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166 "for the Collection '" + c.identifier() + "'.");
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167
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168 return c;
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169 }
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170
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171
524
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172 protected Map<String, ThemeList> parseThemeLists(Document description) {
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173 System.out.println("DescribeCollectionServiceImpl.parseThemeLists");
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174
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175 NodeList lists = (NodeList) XMLUtils.xpath(
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176 description,
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177 "/art:artifact-collection/art:attribute/art:outputs/art:output",
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178 XPathConstants.NODESET,
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179 ArtifactNamespaceContext.INSTANCE);
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180
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181 int num = lists != null ? lists.getLength() : 0;
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182
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183 Map<String, ThemeList> themeList = new HashMap<String, ThemeList>(num);
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184
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185 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
524
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186
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187 for (int i = 0; i < num; i++) {
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188 Element node = (Element)lists.item(i);
524
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189
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190 String outName = node.getAttribute("name");
524
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191
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192 if (outName.length() > 0) {
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193 ThemeList list = parseThemeList(node);
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194 if (list.getThemeCount() > 0) {
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195 themeList.put(outName, list);
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196 }
524
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197 }
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198 }
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199
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200 return themeList;
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201 }
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202
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203
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204 protected ThemeList parseThemeList(Element node) {
524
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205 System.out.println("DescribeCollectionServiceImpl.parseThemeList");
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206
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207 NodeList themes = node.getElementsByTagNameNS(
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diff changeset
208 ArtifactNamespaceContext.NAMESPACE_URI,
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diff changeset
209 "theme");
524
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210
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diff changeset
211 int num = themes != null ? themes.getLength() : 0;
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212
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diff changeset
213 List<Theme> themeList = new ArrayList<Theme>(num);
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diff changeset
214
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diff changeset
215 for (int i = 0; i < num; i++) {
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diff changeset
216 Theme theme = parseTheme((Element)themes.item(i));
524
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diff changeset
217
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diff changeset
218 if (theme != null) {
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diff changeset
219 themeList.add(theme);
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220 }
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diff changeset
221 }
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diff changeset
222
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diff changeset
223 return new ThemeList(themeList);
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224 }
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225
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226
575
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diff changeset
227 protected Theme parseTheme(Element ele) {
524
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228 System.out.println("DescribeCollectionServiceImpl.parseTheme");
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229
575
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diff changeset
230 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
524
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diff changeset
231
575
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diff changeset
232 String strAct = ele.getAttributeNS(uri, "active");
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diff changeset
233 String art = ele.getAttributeNS(uri, "artifact");
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parents: 524
diff changeset
234 String fac = ele.getAttributeNS(uri, "facet");
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diff changeset
235 String strPos = ele.getAttributeNS(uri, "pos");
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parents: 524
diff changeset
236 String desc = ele.getAttributeNS(uri, "description");
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diff changeset
237 String strIdx = ele.getAttributeNS(uri, "index");
524
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parents: 270
diff changeset
238
581
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diff changeset
239 if (strAct.length() > 0 && art.length() > 0 && fac.length() > 0
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diff changeset
240 && strPos.length() > 0 && strIdx.length() > 0)
575
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parents: 524
diff changeset
241 {
524
ba238f917b94 The theme list information stored in the attribute of a collection is read and added in form of Themes and ThemeLists to the Collection.
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parents: 270
diff changeset
242 try {
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parents: 270
diff changeset
243 int pos = Integer.valueOf(strPos);
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parents: 270
diff changeset
244 int active = Integer.valueOf(strAct);
575
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diff changeset
245 int idx = Integer.valueOf(strIdx);
524
ba238f917b94 The theme list information stored in the attribute of a collection is read and added in form of Themes and ThemeLists to the Collection.
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parents: 270
diff changeset
246
575
5277f46a63c2 The description of a facet is now displayed in the ChartThemePanel.
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diff changeset
247 return new DefaultTheme(pos, idx, active > 0, art, fac, desc);
524
ba238f917b94 The theme list information stored in the attribute of a collection is read and added in form of Themes and ThemeLists to the Collection.
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parents: 270
diff changeset
248 }
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parents: 270
diff changeset
249 catch (NumberFormatException nfe) {
ba238f917b94 The theme list information stored in the attribute of a collection is read and added in form of Themes and ThemeLists to the Collection.
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diff changeset
250 nfe.printStackTrace();
ba238f917b94 The theme list information stored in the attribute of a collection is read and added in form of Themes and ThemeLists to the Collection.
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diff changeset
251 }
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parents: 270
diff changeset
252 }
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parents: 270
diff changeset
253
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diff changeset
254 return null;
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parents: 270
diff changeset
255 }
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parents: 270
diff changeset
256
ba238f917b94 The theme list information stored in the attribute of a collection is read and added in form of Themes and ThemeLists to the Collection.
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257
99
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258 /**
5c3d685546a6 Added a new service to describe collections.
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259 * This method extracts the CollectionItem from <i>node</i> with its output
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260 * modes. The output modes are parsed using the parseOutputModes() method.
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261 *
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262 * @param node A node that contains information about a CollectionItem.
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263 *
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264 * @return a CollectionItem.
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265 */
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266 protected CollectionItem parseCollectionItem(Element node) {
99
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267 System.out.println("AddArtifactServiceImpl.parseCollectionItem");
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268
5c3d685546a6 Added a new service to describe collections.
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269 if (node == null) {
5c3d685546a6 Added a new service to describe collections.
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270 System.err.println("The node for parsing CollectionItem is null!");
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271 return null;
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parents:
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272 }
5c3d685546a6 Added a new service to describe collections.
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273
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diff changeset
274 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
99
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275
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diff changeset
276 String uuid = node.getAttributeNS(uri, "uuid");
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diff changeset
277 String hash = node.getAttributeNS(uri, "hash");
99
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278
587
53ad6dd2cb2b The project list displays the favorite state of a collection now. A gold star means, that a collection is a owner's favorite project and will never die. A silver star means, that the project is a common project.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 582
diff changeset
279 if (uuid == null || uuid.length() == 0) {
99
5c3d685546a6 Added a new service to describe collections.
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280 System.err.println("Found an invalid CollectionItem!");
581
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diff changeset
281 return null;
99
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parents:
diff changeset
282 }
5c3d685546a6 Added a new service to describe collections.
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diff changeset
283
581
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diff changeset
284 NodeList outputmodes = node.getElementsByTagNameNS(uri, "outputmodes");
99
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diff changeset
285
581
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diff changeset
286 if (outputmodes.getLength() < 1) {
210339fd1a34 Removed more expensive XPath.
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parents: 575
diff changeset
287 return null;
210339fd1a34 Removed more expensive XPath.
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parents: 575
diff changeset
288 }
210339fd1a34 Removed more expensive XPath.
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parents: 575
diff changeset
289
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diff changeset
290 Element om = (Element)outputmodes.item(0);
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parents: 575
diff changeset
291
210339fd1a34 Removed more expensive XPath.
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parents: 575
diff changeset
292 List<OutputMode> modes = parseOutputModes(om);
99
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diff changeset
293
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diff changeset
294 return new DefaultCollectionItem(uuid, hash, modes);
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
295 }
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
296
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
297
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
298 /**
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
299 * This method extracts the OutputModes available for a specific
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
300 * CollectionItem and returns them as list.
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
301 *
5c3d685546a6 Added a new service to describe collections.
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diff changeset
302 * @param node The root node of the outputmodes list.
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
303 *
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
304 * @return a list of OutputModes.
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
305 */
581
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diff changeset
306 protected List<OutputMode> parseOutputModes(Element node) {
99
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
307 System.out.println("AddArtifactServiceImpl.parseOutputModes");
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
308
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
309 if (node == null) {
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
310 System.err.println("The node for parsing OutputModes is null!");
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
311 return null;
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
312 }
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
313
581
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parents: 575
diff changeset
314 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
99
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
315
581
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parents: 575
diff changeset
316 NodeList list = node.getElementsByTagNameNS(uri, "output");
210339fd1a34 Removed more expensive XPath.
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parents: 575
diff changeset
317
210339fd1a34 Removed more expensive XPath.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 575
diff changeset
318 int size = list.getLength();
210339fd1a34 Removed more expensive XPath.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 575
diff changeset
319
210339fd1a34 Removed more expensive XPath.
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parents: 575
diff changeset
320 if (size == 0) {
99
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
321 System.err.println("No outputmode nodes found!");
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
322 return null;
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
323 }
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
324
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
325 List<OutputMode> modes = new ArrayList<OutputMode>(size);
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
326
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
327 for (int i = 0; i < size; i++) {
581
210339fd1a34 Removed more expensive XPath.
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parents: 575
diff changeset
328 Element tmp = (Element)list.item(i);
99
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
329
581
210339fd1a34 Removed more expensive XPath.
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parents: 575
diff changeset
330 String name = tmp.getAttributeNS(uri, "name");
210339fd1a34 Removed more expensive XPath.
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parents: 575
diff changeset
331 String desc = tmp.getAttributeNS(uri, "description");
210339fd1a34 Removed more expensive XPath.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 575
diff changeset
332 String mime = tmp.getAttributeNS(uri, "mime-type");
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 589
diff changeset
333 String type = tmp.getAttributeNS(uri, "type");
581
210339fd1a34 Removed more expensive XPath.
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parents: 575
diff changeset
334
210339fd1a34 Removed more expensive XPath.
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parents: 575
diff changeset
335 if (name.length() == 0) {
99
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
336 System.err.println("Found an invalid output mode.");
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
337 continue;
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
338 }
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
339
270
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 229
diff changeset
340 OutputMode outmode = null;
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
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parents: 229
diff changeset
341 List<Facet> fs = extractFacets(tmp);
99
5c3d685546a6 Added a new service to describe collections.
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diff changeset
342
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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parents: 589
diff changeset
343 if (type.equals("export")) {
270
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
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parents: 229
diff changeset
344 outmode = new ExportMode(name, desc, mime, fs);
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
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parents: 229
diff changeset
345 }
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 589
diff changeset
346 else if (type.equals("report")) {
589
942bd0e7e332 Filter reports and dispatch them to updateReports().
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 587
diff changeset
347 outmode = new ReportMode(name, desc, mime, fs);
942bd0e7e332 Filter reports and dispatch them to updateReports().
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 587
diff changeset
348 }
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 589
diff changeset
349 else if (type.equals("chart")){
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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parents: 589
diff changeset
350 outmode = new ChartMode(name, desc, mime, fs);
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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parents: 589
diff changeset
351 }
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 589
diff changeset
352 else if (type.equals("map")){
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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parents: 589
diff changeset
353 outmode = new MapMode(name, desc, mime, fs);
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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parents: 589
diff changeset
354 }
270
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 229
diff changeset
355 else {
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 589
diff changeset
356 System.err.println("Broken Output mode without type found.");
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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parents: 589
diff changeset
357 continue;
270
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
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parents: 229
diff changeset
358 }
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 229
diff changeset
359
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
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parents: 229
diff changeset
360 modes.add(outmode);
99
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
361 }
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
362
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
363 return modes;
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
364 }
270
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365
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366
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367 protected static List<Facet> extractFacets(Element outmode) {
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368 System.out.println("ArtifactDescriptionFactory - extractFacets()");
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369
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370 NodeList facetList = (NodeList) XMLUtils.xpath(
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371 outmode,
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372 XPATH_FACETS,
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373 XPathConstants.NODESET,
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374 ArtifactNamespaceContext.INSTANCE);
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375
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376 int num = facetList != null ? facetList.getLength() : 0;
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377
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378 List<Facet> facets = new ArrayList<Facet>(num);
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379
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380 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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381
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382 for (int i = 0; i < num; i++) {
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383 Element facetEl = (Element) facetList.item(i);
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384
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385 String name = facetEl.getAttributeNS(uri, "name");
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386 String desc = facetEl.getAttributeNS(uri, "description");
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387 String index = facetEl.getAttributeNS(uri, "index");
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388
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389 if (name != null && name.length() > 0 && index != null) {
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390 facets.add(new DefaultFacet(name, Integer.valueOf(index),desc));
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391 }
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392 }
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393
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394 return facets;
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395 }
99
5c3d685546a6 Added a new service to describe collections.
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396 }
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397 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org