Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/DescribeCollectionServiceImpl.java @ 814:6db4839e0ba1

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Datacage: Added a subclass of TreeNode to carry the informations needed by the loading listeners. flys-client/trunk@2470 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 08 Aug 2011 16:19:00 +0000
parents e9337488bac3
children 112f95d7b286
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.NamedNodeMap;
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13 import org.w3c.dom.Node;
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14 import org.w3c.dom.NodeList;
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15
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16 import com.google.gwt.user.server.rpc.RemoteServiceServlet;
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17
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18 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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19 import de.intevation.artifacts.common.utils.ClientProtocolUtils;
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20 import de.intevation.artifacts.common.utils.XMLUtils;
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21
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22 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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23 import de.intevation.artifacts.httpclient.http.HttpClient;
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24 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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25 import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler;
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26
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27 import de.intevation.flys.client.shared.exceptions.ServerException;
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28 import de.intevation.flys.client.shared.model.AttributedTheme;
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29 import de.intevation.flys.client.shared.model.Collection;
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30 import de.intevation.flys.client.shared.model.CollectionItem;
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31 import de.intevation.flys.client.shared.model.DefaultCollection;
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32 import de.intevation.flys.client.shared.model.DefaultCollectionItem;
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33 import de.intevation.flys.client.shared.model.DefaultFacet;
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34 import de.intevation.flys.client.shared.model.DefaultRecommendation;
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35 import de.intevation.flys.client.shared.model.DefaultTheme;
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36 import de.intevation.flys.client.shared.model.ChartMode;
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37 import de.intevation.flys.client.shared.model.ExportMode;
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38 import de.intevation.flys.client.shared.model.MapMode;
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39 import de.intevation.flys.client.shared.model.ReportMode;
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40 import de.intevation.flys.client.shared.model.Facet;
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41 import de.intevation.flys.client.shared.model.OutputMode;
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42 import de.intevation.flys.client.shared.model.Recommendation;
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43 import de.intevation.flys.client.shared.model.Theme;
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44 import de.intevation.flys.client.shared.model.ThemeList;
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45 import de.intevation.flys.client.client.services.DescribeCollectionService;
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46
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47
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48 /**
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49 * This service implements a method that queries the DESCRIBE document of a
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50 * specific collection and returns a Collection object with the information of
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51 * the document.
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52 *
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53 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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54 */
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55 public class DescribeCollectionServiceImpl
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56 extends RemoteServiceServlet
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57 implements DescribeCollectionService
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58 {
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59 /** The error message key that is thrown if an error occured while
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60 * describe() a Collection.*/
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61 public static final String ERROR_DESCRIBE_COLLECTION =
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62 "error_describe_collection";
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63
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64 public static final String XPATH_FACETS = "art:facets/art:facet";
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65
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66 public static final String XPATH_LOADED_RECOMMENDATIONS =
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67 "/art:artifact-collection/art:attribute/art:loaded-recommendations/art:recommendation";
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70 public Collection describe(String uuid, String serverUrl, String locale)
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71 throws ServerException
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72 {
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73 System.out.println("DescribeCollectionServiceImpl.describe");
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74
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75 Document describe = ClientProtocolUtils.newDescribeCollectionDocument(
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76 uuid);
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77
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78 HttpClient client = new HttpClientImpl(serverUrl, locale);
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79
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80 try {
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81 Document response = (Document) client.doCollectionAction(
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82 describe, uuid, new DocumentResponseHandler());
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83
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84 Collection c = parseCollection(response);
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85
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86 if (c == null) {
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87 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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88 }
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89
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90 System.out.println("Collection successfully parsed.");
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91
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92 return c;
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93 }
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94 catch (ConnectionException ce) {
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95 System.err.println(ce.getLocalizedMessage());
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96 }
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97
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98 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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99 }
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100
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101
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102 /**
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103 * This method takes the DESCRIBE document of the Collections describe()
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104 * operation and extracts the information about the collection itself and
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105 * the collection items.
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106 *
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107 * @param description The DESCRIBE document of the Collections describe()
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108 * operation.
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109 *
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110 * @return a Collection with CollectionItems.
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111 */
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112 protected Collection parseCollection(Document description) {
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113 System.out.println("AddArtifactServiceImpl.parseCollection");
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114
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115 if (description == null) {
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116 System.err.println("The DESCRIBE of the Collection is null!");
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117 return null;
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118 }
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119
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120 String uuid = XMLUtils.xpathString(
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121 description,
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122 "art:artifact-collection/@art:uuid",
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123 ArtifactNamespaceContext.INSTANCE);
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124
587
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125 String ttlStr = XMLUtils.xpathString(
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126 description,
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127 "art:artifact-collection/@art:ttl",
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128 ArtifactNamespaceContext.INSTANCE);
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129
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130 if (uuid.length() == 0 || ttlStr.length() == 0) {
99
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131 System.err.println("Found an invalid Collection!");
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132 return null;
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133 }
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134
587
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135
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136 long ttl = -1;
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137 try {
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138 ttl = Long.valueOf(ttlStr);
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139 }
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140 catch (NumberFormatException nfe) {
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141 // do nothing
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142 }
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143
524
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144 Map<String, ThemeList> themeList = parseThemeLists(description);
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145 List<Recommendation> recommended = parseRecommendations(description);
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146
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147 Collection c = !themeList.isEmpty()
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148 ? new DefaultCollection(uuid, ttl, recommended, themeList)
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149 : new DefaultCollection(uuid, ttl, recommended);
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150
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151 NodeList items = (NodeList) XMLUtils.xpath(
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152 description,
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153 "art:artifact-collection/art:artifacts/art:artifact",
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154 XPathConstants.NODESET,
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155 ArtifactNamespaceContext.INSTANCE);
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156
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157 if (items == null || items.getLength() == 0) {
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158 System.out.println("No collection item found for this collection.");
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159
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160 return c;
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161 }
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162
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163 int size = items.getLength();
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164
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165 for (int i = 0; i < size; i++) {
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166 CollectionItem item = parseCollectionItem((Element)items.item(i));
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167
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168 if (item != null) {
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169 c.addItem(item);
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170 }
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171 }
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172
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173 System.out.println(
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174 "Found " + c.getItemLength() + " collection items " +
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175 "for the Collection '" + c.identifier() + "'.");
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176
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177 return c;
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178 }
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179
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180
524
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181 protected Map<String, ThemeList> parseThemeLists(Document description) {
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182 System.out.println("DescribeCollectionServiceImpl.parseThemeLists");
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183
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184 NodeList lists = (NodeList) XMLUtils.xpath(
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185 description,
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186 "/art:artifact-collection/art:attribute/art:outputs/art:output",
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187 XPathConstants.NODESET,
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188 ArtifactNamespaceContext.INSTANCE);
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189
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diff changeset
190 int num = lists != null ? lists.getLength() : 0;
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191
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192 Map<String, ThemeList> themeList = new HashMap<String, ThemeList>(num);
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193
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194 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
524
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195
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196 for (int i = 0; i < num; i++) {
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197 Element node = (Element)lists.item(i);
524
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198
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199 String outName = node.getAttribute("name");
524
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200
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201 if (outName.length() > 0) {
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202 ThemeList list = parseThemeList(node);
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diff changeset
203 if (list.getThemeCount() > 0) {
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204 themeList.put(outName, list);
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205 }
524
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diff changeset
206 }
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diff changeset
207 }
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208
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diff changeset
209 return themeList;
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210 }
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211
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diff changeset
212
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diff changeset
213 protected ThemeList parseThemeList(Element node) {
524
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diff changeset
214 System.out.println("DescribeCollectionServiceImpl.parseThemeList");
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215
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diff changeset
216 NodeList themes = node.getElementsByTagNameNS(
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diff changeset
217 ArtifactNamespaceContext.NAMESPACE_URI,
804
374712890b94 Facets read from Collection's DESCRIBE document keep all their attributes after the Collection's attribute has been modified.
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parents: 796
diff changeset
218 "facet");
524
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219
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diff changeset
220 int num = themes != null ? themes.getLength() : 0;
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diff changeset
221
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diff changeset
222 List<Theme> themeList = new ArrayList<Theme>(num);
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223
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diff changeset
224 for (int i = 0; i < num; i++) {
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diff changeset
225 Theme theme = parseTheme((Element)themes.item(i));
524
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226
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diff changeset
227 if (theme != null) {
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228 themeList.add(theme);
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229 }
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230 }
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diff changeset
231
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diff changeset
232 return new ThemeList(themeList);
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diff changeset
233 }
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diff changeset
234
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235
575
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diff changeset
236 protected Theme parseTheme(Element ele) {
524
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237 System.out.println("DescribeCollectionServiceImpl.parseTheme");
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238
575
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diff changeset
239 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
524
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240
804
374712890b94 Facets read from Collection's DESCRIBE document keep all their attributes after the Collection's attribute has been modified.
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241 NamedNodeMap attrMap = ele.getAttributes();
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diff changeset
242 int attrNum = attrMap != null ? attrMap.getLength() : 0;
524
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243
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244 AttributedTheme t = new AttributedTheme();
524
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245
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diff changeset
246 for (int i = 0; i < attrNum; i++) {
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247 Node attr = attrMap.item(i);
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248
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diff changeset
249 String prefix = attr.getPrefix();
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250 String name = attr.getNodeName().replace(prefix + ":", "");
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diff changeset
251 String value = attr.getNodeValue();
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252
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253 t.addAttr(name, value);
524
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254 }
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255
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diff changeset
256 return t;
524
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257 }
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258
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259
99
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260 /**
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261 * This method extracts the CollectionItem from <i>node</i> with its output
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262 * modes. The output modes are parsed using the parseOutputModes() method.
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263 *
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264 * @param node A node that contains information about a CollectionItem.
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265 *
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266 * @return a CollectionItem.
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267 */
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268 protected CollectionItem parseCollectionItem(Element node) {
99
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269 System.out.println("AddArtifactServiceImpl.parseCollectionItem");
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270
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271 if (node == null) {
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272 System.err.println("The node for parsing CollectionItem is null!");
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273 return null;
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274 }
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275
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276 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
99
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277
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diff changeset
278 String uuid = node.getAttributeNS(uri, "uuid");
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diff changeset
279 String hash = node.getAttributeNS(uri, "hash");
99
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280
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
281 if (uuid == null || uuid.length() == 0) {
99
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282 System.err.println("Found an invalid CollectionItem!");
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diff changeset
283 return null;
99
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284 }
5c3d685546a6 Added a new service to describe collections.
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285
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diff changeset
286 NodeList outputmodes = node.getElementsByTagNameNS(uri, "outputmodes");
99
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287
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diff changeset
288 if (outputmodes.getLength() < 1) {
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diff changeset
289 return null;
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diff changeset
290 }
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291
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diff changeset
292 Element om = (Element)outputmodes.item(0);
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diff changeset
293
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diff changeset
294 List<OutputMode> modes = parseOutputModes(om);
99
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295
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diff changeset
296 return new DefaultCollectionItem(uuid, hash, modes);
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parents:
diff changeset
297 }
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parents:
diff changeset
298
5c3d685546a6 Added a new service to describe collections.
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299
5c3d685546a6 Added a new service to describe collections.
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diff changeset
300 /**
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parents:
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301 * This method extracts the OutputModes available for a specific
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parents:
diff changeset
302 * CollectionItem and returns them as list.
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parents:
diff changeset
303 *
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304 * @param node The root node of the outputmodes list.
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parents:
diff changeset
305 *
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306 * @return a list of OutputModes.
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parents:
diff changeset
307 */
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diff changeset
308 protected List<OutputMode> parseOutputModes(Element node) {
99
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diff changeset
309 System.out.println("AddArtifactServiceImpl.parseOutputModes");
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diff changeset
310
5c3d685546a6 Added a new service to describe collections.
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diff changeset
311 if (node == null) {
5c3d685546a6 Added a new service to describe collections.
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diff changeset
312 System.err.println("The node for parsing OutputModes is null!");
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parents:
diff changeset
313 return null;
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
314 }
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
315
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diff changeset
316 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
99
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parents:
diff changeset
317
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diff changeset
318 NodeList list = node.getElementsByTagNameNS(uri, "output");
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parents: 575
diff changeset
319
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parents: 575
diff changeset
320 int size = list.getLength();
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parents: 575
diff changeset
321
210339fd1a34 Removed more expensive XPath.
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diff changeset
322 if (size == 0) {
99
5c3d685546a6 Added a new service to describe collections.
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diff changeset
323 System.err.println("No outputmode nodes found!");
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
324 return null;
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
325 }
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
326
5c3d685546a6 Added a new service to describe collections.
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diff changeset
327 List<OutputMode> modes = new ArrayList<OutputMode>(size);
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
328
5c3d685546a6 Added a new service to describe collections.
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diff changeset
329 for (int i = 0; i < size; i++) {
581
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parents: 575
diff changeset
330 Element tmp = (Element)list.item(i);
99
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diff changeset
331
581
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diff changeset
332 String name = tmp.getAttributeNS(uri, "name");
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parents: 575
diff changeset
333 String desc = tmp.getAttributeNS(uri, "description");
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parents: 575
diff changeset
334 String mime = tmp.getAttributeNS(uri, "mime-type");
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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parents: 589
diff changeset
335 String type = tmp.getAttributeNS(uri, "type");
581
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parents: 575
diff changeset
336
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parents: 575
diff changeset
337 if (name.length() == 0) {
99
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diff changeset
338 System.err.println("Found an invalid output mode.");
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
339 continue;
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
340 }
5c3d685546a6 Added a new service to describe collections.
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diff changeset
341
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
342 OutputMode outmode = null;
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parents: 229
diff changeset
343 List<Facet> fs = extractFacets(tmp);
99
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diff changeset
344
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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diff changeset
345 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
346 outmode = new ExportMode(name, desc, mime, fs);
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diff changeset
347 }
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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parents: 589
diff changeset
348 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
349 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
350 }
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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diff changeset
351 else if (type.equals("chart")){
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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diff changeset
352 outmode = new ChartMode(name, desc, mime, fs);
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diff changeset
353 }
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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diff changeset
354 else if (type.equals("map")){
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diff changeset
355 outmode = new MapMode(name, desc, mime, fs);
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parents: 589
diff changeset
356 }
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
357 else {
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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parents: 589
diff changeset
358 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
359 continue;
270
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parents: 229
diff changeset
360 }
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361
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362 modes.add(outmode);
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363 }
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364
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365 return modes;
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366 }
270
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367
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368
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369 protected static List<Facet> extractFacets(Element outmode) {
809
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370 System.out.println("DescribeCollectionServiceImpl - extractFacets()");
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371
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372 NodeList facetList = (NodeList) XMLUtils.xpath(
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373 outmode,
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374 XPATH_FACETS,
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375 XPathConstants.NODESET,
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376 ArtifactNamespaceContext.INSTANCE);
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377
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378 int num = facetList != null ? facetList.getLength() : 0;
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379
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380 List<Facet> facets = new ArrayList<Facet>(num);
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381
575
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382 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
270
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383
575
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384 for (int i = 0; i < num; i++) {
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385 Element facetEl = (Element) facetList.item(i);
270
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386
575
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387 String name = facetEl.getAttributeNS(uri, "name");
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388 String desc = facetEl.getAttributeNS(uri, "description");
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389 String index = facetEl.getAttributeNS(uri, "index");
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390
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391 if (name != null && name.length() > 0 && index != null) {
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392 facets.add(new DefaultFacet(name, Integer.valueOf(index),desc));
270
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393 }
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394 }
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395
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396 return facets;
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397 }
809
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parents: 804
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398
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parents: 804
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399
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400 public static List<Recommendation> parseRecommendations(Document doc) {
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401 System.out.println("DescribeCollectionServiceImpl.parseRecommendations");
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402
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403 NodeList list = (NodeList) XMLUtils.xpath(
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parents: 804
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404 doc,
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parents: 804
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405 XPATH_LOADED_RECOMMENDATIONS,
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parents: 804
diff changeset
406 XPathConstants.NODESET,
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parents: 804
diff changeset
407 ArtifactNamespaceContext.INSTANCE);
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parents: 804
diff changeset
408
e9337488bac3 The Collection now knows its already loaded recommendations - the CollectionView will not load recommendations that have already been loaded before.
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parents: 804
diff changeset
409 int num = list != null ? list.getLength() : 0;
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parents: 804
diff changeset
410
e9337488bac3 The Collection now knows its already loaded recommendations - the CollectionView will not load recommendations that have already been loaded before.
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parents: 804
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411 List<Recommendation> recs = new ArrayList<Recommendation>(num);
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parents: 804
diff changeset
412
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parents: 804
diff changeset
413 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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parents: 804
diff changeset
414
e9337488bac3 The Collection now knows its already loaded recommendations - the CollectionView will not load recommendations that have already been loaded before.
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parents: 804
diff changeset
415 for (int i = 0; i < num; i++) {
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parents: 804
diff changeset
416 Element rec = (Element) list.item(i);
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parents: 804
diff changeset
417
e9337488bac3 The Collection now knows its already loaded recommendations - the CollectionView will not load recommendations that have already been loaded before.
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parents: 804
diff changeset
418 String factory = rec.getAttributeNS(uri, "factory");
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parents: 804
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419 String dbids = rec.getAttributeNS(uri, "db-ids");
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parents: 804
diff changeset
420
e9337488bac3 The Collection now knows its already loaded recommendations - the CollectionView will not load recommendations that have already been loaded before.
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parents: 804
diff changeset
421 if (factory != null && factory.length() > 0) {
e9337488bac3 The Collection now knows its already loaded recommendations - the CollectionView will not load recommendations that have already been loaded before.
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parents: 804
diff changeset
422 recs.add(new DefaultRecommendation(factory, dbids));
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parents: 804
diff changeset
423 }
e9337488bac3 The Collection now knows its already loaded recommendations - the CollectionView will not load recommendations that have already been loaded before.
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parents: 804
diff changeset
424 }
e9337488bac3 The Collection now knows its already loaded recommendations - the CollectionView will not load recommendations that have already been loaded before.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 804
diff changeset
425
e9337488bac3 The Collection now knows its already loaded recommendations - the CollectionView will not load recommendations that have already been loaded before.
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parents: 804
diff changeset
426 return recs;
e9337488bac3 The Collection now knows its already loaded recommendations - the CollectionView will not load recommendations that have already been loaded before.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 804
diff changeset
427 }
99
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
428 }
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
429 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org