Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/DescribeCollectionServiceImpl.java @ 589:942bd0e7e332

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Filter reports and dispatch them to updateReports(). flys-client/trunk@2184 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 21 Jun 2011 16:43:59 +0000
parents 53ad6dd2cb2b
children cd8603aaa730
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.DefaultOutputMode;
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32 import de.intevation.flys.client.shared.model.DefaultTheme;
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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.ReportMode;
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35 import de.intevation.flys.client.shared.model.Facet;
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36 import de.intevation.flys.client.shared.model.OutputMode;
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37 import de.intevation.flys.client.shared.model.Theme;
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38 import de.intevation.flys.client.shared.model.ThemeList;
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39 import de.intevation.flys.client.client.services.DescribeCollectionService;
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40
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41
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42 /**
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43 * This service implements a method that queries the DESCRIBE document of a
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44 * specific collection and returns a Collection object with the information of
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45 * the document.
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46 *
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47 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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48 */
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49 public class DescribeCollectionServiceImpl
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50 extends RemoteServiceServlet
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51 implements DescribeCollectionService
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52 {
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53 /** The error message key that is thrown if an error occured while
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54 * describe() a Collection.*/
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55 public static final String ERROR_DESCRIBE_COLLECTION =
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56 "error_describe_collection";
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57
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58 public static final String XPATH_FACETS = "art:facets/art:facet";
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59
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61 public Collection describe(String uuid, String serverUrl, String locale)
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62 throws ServerException
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63 {
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64 System.out.println("DescribeCollectionServiceImpl.describe");
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65
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66 Document describe = ClientProtocolUtils.newDescribeCollectionDocument(
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67 uuid);
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68
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69 HttpClient client = new HttpClientImpl(serverUrl, locale);
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70
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71 try {
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72 Document response = (Document) client.doCollectionAction(
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73 describe, uuid, new DocumentResponseHandler());
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74
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75 Collection c = parseCollection(response);
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76
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77 if (c == null) {
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78 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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79 }
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80
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81 System.out.println("Collection successfully parsed.");
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82
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83 return c;
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84 }
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85 catch (ConnectionException ce) {
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86 System.err.println(ce.getLocalizedMessage());
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87 }
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88
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89 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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90 }
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91
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92
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93 /**
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94 * This method takes the DESCRIBE document of the Collections describe()
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95 * operation and extracts the information about the collection itself and
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96 * the collection items.
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97 *
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98 * @param description The DESCRIBE document of the Collections describe()
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99 * operation.
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100 *
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101 * @return a Collection with CollectionItems.
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102 */
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103 protected Collection parseCollection(Document description) {
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104 System.out.println("AddArtifactServiceImpl.parseCollection");
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105
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106 if (description == null) {
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107 System.err.println("The DESCRIBE of the Collection is null!");
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108 return null;
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109 }
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110
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111 String uuid = XMLUtils.xpathString(
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112 description,
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113 "art:artifact-collection/@art:uuid",
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114 ArtifactNamespaceContext.INSTANCE);
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115
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116 String ttlStr = XMLUtils.xpathString(
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117 description,
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118 "art:artifact-collection/@art:ttl",
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119 ArtifactNamespaceContext.INSTANCE);
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120
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121 if (uuid.length() == 0 || ttlStr.length() == 0) {
99
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122 System.err.println("Found an invalid Collection!");
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123 return null;
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124 }
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125
587
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126
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127 long ttl = -1;
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128 try {
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129 ttl = Long.valueOf(ttlStr);
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130 }
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131 catch (NumberFormatException nfe) {
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132 // do nothing
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133 }
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134
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135 Map<String, ThemeList> themeList = parseThemeLists(description);
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136
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137 Collection c = !themeList.isEmpty()
587
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138 ? new DefaultCollection(uuid, ttl, themeList)
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139 : new DefaultCollection(uuid, ttl);
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140
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141 NodeList items = (NodeList) XMLUtils.xpath(
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142 description,
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143 "art:artifact-collection/art:artifacts/art:artifact",
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144 XPathConstants.NODESET,
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145 ArtifactNamespaceContext.INSTANCE);
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146
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147 if (items == null || items.getLength() == 0) {
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148 System.out.println("No collection item found for this collection.");
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149
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150 return c;
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151 }
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152
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153 int size = items.getLength();
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154
5c3d685546a6 Added a new service to describe collections.
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155 for (int i = 0; i < size; i++) {
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156 CollectionItem item = parseCollectionItem((Element)items.item(i));
99
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157
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158 if (item != null) {
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159 c.addItem(item);
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160 }
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161 }
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162
5c3d685546a6 Added a new service to describe collections.
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163 System.out.println(
5c3d685546a6 Added a new service to describe collections.
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164 "Found " + c.getItemLength() + " collection items " +
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165 "for the Collection '" + c.identifier() + "'.");
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166
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167 return c;
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168 }
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169
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170
524
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171 protected Map<String, ThemeList> parseThemeLists(Document description) {
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172 System.out.println("DescribeCollectionServiceImpl.parseThemeLists");
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173
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174 NodeList lists = (NodeList) XMLUtils.xpath(
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175 description,
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176 "/art:artifact-collection/art:attribute/art:outputs/art:output",
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177 XPathConstants.NODESET,
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178 ArtifactNamespaceContext.INSTANCE);
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179
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180 int num = lists != null ? lists.getLength() : 0;
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181
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182 Map<String, ThemeList> themeList = new HashMap<String, ThemeList>(num);
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183
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184 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
524
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185
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186 for (int i = 0; i < num; i++) {
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187 Element node = (Element)lists.item(i);
524
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188
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189 String outName = node.getAttribute("name");
524
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190
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191 if (outName.length() > 0) {
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192 ThemeList list = parseThemeList(node);
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diff changeset
193 if (list.getThemeCount() > 0) {
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194 themeList.put(outName, list);
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195 }
524
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196 }
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197 }
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198
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199 return themeList;
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200 }
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201
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202
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203 protected ThemeList parseThemeList(Element node) {
524
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204 System.out.println("DescribeCollectionServiceImpl.parseThemeList");
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205
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diff changeset
206 NodeList themes = node.getElementsByTagNameNS(
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diff changeset
207 ArtifactNamespaceContext.NAMESPACE_URI,
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diff changeset
208 "theme");
524
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209
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diff changeset
210 int num = themes != null ? themes.getLength() : 0;
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211
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diff changeset
212 List<Theme> themeList = new ArrayList<Theme>(num);
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213
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diff changeset
214 for (int i = 0; i < num; i++) {
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diff changeset
215 Theme theme = parseTheme((Element)themes.item(i));
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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diff changeset
216
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diff changeset
217 if (theme != null) {
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diff changeset
218 themeList.add(theme);
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diff changeset
219 }
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diff changeset
220 }
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diff changeset
221
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diff changeset
222 return new ThemeList(themeList);
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diff changeset
223 }
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diff changeset
224
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diff changeset
225
575
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diff changeset
226 protected Theme parseTheme(Element ele) {
524
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diff changeset
227 System.out.println("DescribeCollectionServiceImpl.parseTheme");
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228
575
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diff changeset
229 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
524
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diff changeset
230
575
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diff changeset
231 String strAct = ele.getAttributeNS(uri, "active");
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parents: 524
diff changeset
232 String art = ele.getAttributeNS(uri, "artifact");
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diff changeset
233 String fac = ele.getAttributeNS(uri, "facet");
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diff changeset
234 String strPos = ele.getAttributeNS(uri, "pos");
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parents: 524
diff changeset
235 String desc = ele.getAttributeNS(uri, "description");
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diff changeset
236 String strIdx = ele.getAttributeNS(uri, "index");
524
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237
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238 if (strAct.length() > 0 && art.length() > 0 && fac.length() > 0
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239 && strPos.length() > 0 && strIdx.length() > 0)
575
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240 {
524
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diff changeset
241 try {
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242 int pos = Integer.valueOf(strPos);
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243 int active = Integer.valueOf(strAct);
575
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244 int idx = Integer.valueOf(strIdx);
524
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245
575
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246 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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247 }
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248 catch (NumberFormatException nfe) {
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249 nfe.printStackTrace();
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250 }
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251 }
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252
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253 return null;
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254 }
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255
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256
99
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257 /**
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258 * This method extracts the CollectionItem from <i>node</i> with its output
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259 * modes. The output modes are parsed using the parseOutputModes() method.
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260 *
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261 * @param node A node that contains information about a CollectionItem.
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262 *
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263 * @return a CollectionItem.
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264 */
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265 protected CollectionItem parseCollectionItem(Element node) {
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266 System.out.println("AddArtifactServiceImpl.parseCollectionItem");
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267
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268 if (node == null) {
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269 System.err.println("The node for parsing CollectionItem is null!");
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270 return null;
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271 }
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272
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273 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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274
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275 String uuid = node.getAttributeNS(uri, "uuid");
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276 String hash = node.getAttributeNS(uri, "hash");
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277
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.
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278 if (uuid == null || uuid.length() == 0) {
99
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279 System.err.println("Found an invalid CollectionItem!");
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280 return null;
99
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281 }
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282
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283 NodeList outputmodes = node.getElementsByTagNameNS(uri, "outputmodes");
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284
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285 if (outputmodes.getLength() < 1) {
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diff changeset
286 return null;
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287 }
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288
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289 Element om = (Element)outputmodes.item(0);
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290
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291 List<OutputMode> modes = parseOutputModes(om);
99
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292
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293 return new DefaultCollectionItem(uuid, hash, modes);
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294 }
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295
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296
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297 /**
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298 * This method extracts the OutputModes available for a specific
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299 * CollectionItem and returns them as list.
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300 *
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301 * @param node The root node of the outputmodes list.
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302 *
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303 * @return a list of OutputModes.
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304 */
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305 protected List<OutputMode> parseOutputModes(Element node) {
99
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306 System.out.println("AddArtifactServiceImpl.parseOutputModes");
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307
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308 if (node == null) {
5c3d685546a6 Added a new service to describe collections.
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309 System.err.println("The node for parsing OutputModes is null!");
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310 return null;
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311 }
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312
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313 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
99
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diff changeset
314
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diff changeset
315 NodeList list = node.getElementsByTagNameNS(uri, "output");
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316
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diff changeset
317 int size = list.getLength();
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diff changeset
318
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diff changeset
319 if (size == 0) {
99
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320 System.err.println("No outputmode nodes found!");
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diff changeset
321 return null;
5c3d685546a6 Added a new service to describe collections.
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322 }
5c3d685546a6 Added a new service to describe collections.
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323
5c3d685546a6 Added a new service to describe collections.
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diff changeset
324 List<OutputMode> modes = new ArrayList<OutputMode>(size);
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diff changeset
325
5c3d685546a6 Added a new service to describe collections.
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diff changeset
326 for (int i = 0; i < size; i++) {
581
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diff changeset
327 Element tmp = (Element)list.item(i);
99
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diff changeset
328
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diff changeset
329 String name = tmp.getAttributeNS(uri, "name");
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diff changeset
330 String desc = tmp.getAttributeNS(uri, "description");
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diff changeset
331 String mime = tmp.getAttributeNS(uri, "mime-type");
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diff changeset
332
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diff changeset
333 if (name.length() == 0) {
99
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diff changeset
334 System.err.println("Found an invalid output mode.");
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diff changeset
335 continue;
5c3d685546a6 Added a new service to describe collections.
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diff changeset
336 }
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diff changeset
337
270
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
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diff changeset
338 OutputMode outmode = null;
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diff changeset
339 List<Facet> fs = extractFacets(tmp);
99
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diff changeset
340
270
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diff changeset
341 if (name.indexOf("export") > -1) {
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diff changeset
342 outmode = new ExportMode(name, desc, mime, fs);
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diff changeset
343 }
589
942bd0e7e332 Filter reports and dispatch them to updateReports().
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diff changeset
344 else if (name.indexOf("report") > -1) {
942bd0e7e332 Filter reports and dispatch them to updateReports().
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diff changeset
345 outmode = new ReportMode(name, desc, mime, fs);
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diff changeset
346 }
270
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diff changeset
347 else {
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diff changeset
348 outmode = new DefaultOutputMode(name, desc, mime, fs);
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diff changeset
349 }
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diff changeset
350
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diff changeset
351 modes.add(outmode);
99
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diff changeset
352 }
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353
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diff changeset
354 return modes;
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diff changeset
355 }
270
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
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diff changeset
356
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diff changeset
357
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diff changeset
358 protected static List<Facet> extractFacets(Element outmode) {
270
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diff changeset
359 System.out.println("ArtifactDescriptionFactory - extractFacets()");
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diff changeset
360
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diff changeset
361 NodeList facetList = (NodeList) XMLUtils.xpath(
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diff changeset
362 outmode,
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diff changeset
363 XPATH_FACETS,
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364 XPathConstants.NODESET,
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365 ArtifactNamespaceContext.INSTANCE);
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366
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367 int num = facetList != null ? facetList.getLength() : 0;
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368
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369 List<Facet> facets = new ArrayList<Facet>(num);
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370
575
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371 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
270
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372
575
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373 for (int i = 0; i < num; i++) {
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374 Element facetEl = (Element) facetList.item(i);
270
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375
575
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376 String name = facetEl.getAttributeNS(uri, "name");
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377 String desc = facetEl.getAttributeNS(uri, "description");
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378 String index = facetEl.getAttributeNS(uri, "index");
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379
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380 if (name != null && name.length() > 0 && index != null) {
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381 facets.add(new DefaultFacet(name, Integer.valueOf(index),desc));
270
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382 }
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383 }
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parents: 229
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384
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385 return facets;
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386 }
99
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387 }
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388 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org