Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/DescribeCollectionServiceImpl.java @ 823:407de0f4b66a

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Set the map projection and its max extent dynamically - information extracted from facets. flys-client/trunk@2515 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 19 Aug 2011 15:57:23 +0000
parents 112f95d7b286
children f14cefeed243
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.ChartMode;
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36 import de.intevation.flys.client.shared.model.ExportMode;
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37 import de.intevation.flys.client.shared.model.MapMode;
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38 import de.intevation.flys.client.shared.model.ReportMode;
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39 import de.intevation.flys.client.shared.model.Facet;
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40 import de.intevation.flys.client.shared.model.OutputMode;
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41 import de.intevation.flys.client.shared.model.Recommendation;
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42 import de.intevation.flys.client.shared.model.Theme;
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43 import de.intevation.flys.client.shared.model.ThemeList;
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44 import de.intevation.flys.client.client.services.DescribeCollectionService;
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45
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46
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47 /**
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48 * This service implements a method that queries the DESCRIBE document of a
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49 * specific collection and returns a Collection object with the information of
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50 * the document.
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51 *
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52 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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53 */
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54 public class DescribeCollectionServiceImpl
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55 extends RemoteServiceServlet
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56 implements DescribeCollectionService
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57 {
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58 /** The error message key that is thrown if an error occured while
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59 * describe() a Collection.*/
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60 public static final String ERROR_DESCRIBE_COLLECTION =
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61 "error_describe_collection";
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62
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63 public static final String XPATH_FACETS = "art:facets/art:facet";
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64
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65 public static final String XPATH_LOADED_RECOMMENDATIONS =
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66 "/art:artifact-collection/art:attribute/art:loaded-recommendations/art:recommendation";
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67
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69 public Collection describe(String uuid, String serverUrl, String locale)
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70 throws ServerException
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71 {
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72 System.out.println("DescribeCollectionServiceImpl.describe");
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73
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74 Document describe = ClientProtocolUtils.newDescribeCollectionDocument(
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75 uuid);
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76
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77 HttpClient client = new HttpClientImpl(serverUrl, locale);
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78
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79 try {
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80 Document response = (Document) client.doCollectionAction(
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81 describe, uuid, new DocumentResponseHandler());
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82
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83 Collection c = parseCollection(response);
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84
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85 if (c == null) {
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86 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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87 }
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88
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89 System.out.println("Collection successfully parsed.");
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90
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91 return c;
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92 }
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93 catch (ConnectionException ce) {
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94 System.err.println(ce.getLocalizedMessage());
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95 }
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96
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97 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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98 }
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100
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101 /**
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102 * This method takes the DESCRIBE document of the Collections describe()
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103 * operation and extracts the information about the collection itself and
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104 * the collection items.
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105 *
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106 * @param description The DESCRIBE document of the Collections describe()
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107 * operation.
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108 *
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109 * @return a Collection with CollectionItems.
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110 */
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111 protected Collection parseCollection(Document description) {
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112 System.out.println("AddArtifactServiceImpl.parseCollection");
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113
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114 if (description == null) {
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115 System.err.println("The DESCRIBE of the Collection is null!");
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116 return null;
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117 }
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118
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119 String uuid = XMLUtils.xpathString(
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120 description,
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121 "art:artifact-collection/@art:uuid",
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122 ArtifactNamespaceContext.INSTANCE);
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123
587
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124 String ttlStr = XMLUtils.xpathString(
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125 description,
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126 "art:artifact-collection/@art:ttl",
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127 ArtifactNamespaceContext.INSTANCE);
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128
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129 if (uuid.length() == 0 || ttlStr.length() == 0) {
99
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130 System.err.println("Found an invalid Collection!");
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131 return null;
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132 }
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133
587
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134
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135 long ttl = -1;
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136 try {
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137 ttl = Long.valueOf(ttlStr);
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138 }
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139 catch (NumberFormatException nfe) {
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140 // do nothing
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141 }
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142
524
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143 Map<String, ThemeList> themeList = parseThemeLists(description);
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144 List<Recommendation> recommended = parseRecommendations(description);
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145
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146 Collection c = !themeList.isEmpty()
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147 ? new DefaultCollection(uuid, ttl, recommended, themeList)
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148 : new DefaultCollection(uuid, ttl, recommended);
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149
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150 NodeList items = (NodeList) XMLUtils.xpath(
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151 description,
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152 "art:artifact-collection/art:artifacts/art:artifact",
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153 XPathConstants.NODESET,
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154 ArtifactNamespaceContext.INSTANCE);
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155
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156 if (items == null || items.getLength() == 0) {
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157 System.out.println("No collection item found for this collection.");
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158
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159 return c;
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160 }
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161
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162 int size = items.getLength();
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163
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164 for (int i = 0; i < size; i++) {
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165 CollectionItem item = parseCollectionItem((Element)items.item(i));
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166
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167 if (item != null) {
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168 c.addItem(item);
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169 }
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170 }
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171
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172 System.out.println(
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173 "Found " + c.getItemLength() + " collection items " +
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174 "for the Collection '" + c.identifier() + "'.");
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175
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176 return c;
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177 }
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178
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179
524
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180 protected Map<String, ThemeList> parseThemeLists(Document description) {
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181 System.out.println("DescribeCollectionServiceImpl.parseThemeLists");
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182
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183 NodeList lists = (NodeList) XMLUtils.xpath(
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184 description,
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185 "/art:artifact-collection/art:attribute/art:outputs/art:output",
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diff changeset
186 XPathConstants.NODESET,
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diff changeset
187 ArtifactNamespaceContext.INSTANCE);
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188
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189 int num = lists != null ? lists.getLength() : 0;
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190
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191 Map<String, ThemeList> themeList = new HashMap<String, ThemeList>(num);
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192
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193 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
524
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194
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195 for (int i = 0; i < num; i++) {
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196 Element node = (Element)lists.item(i);
524
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197
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198 String outName = node.getAttribute("name");
524
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199
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200 if (outName.length() > 0) {
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201 ThemeList list = parseThemeList(node);
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diff changeset
202 if (list.getThemeCount() > 0) {
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diff changeset
203 themeList.put(outName, list);
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diff changeset
204 }
524
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diff changeset
205 }
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diff changeset
206 }
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207
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diff changeset
208 return themeList;
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209 }
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210
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diff changeset
211
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diff changeset
212 protected ThemeList parseThemeList(Element node) {
524
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diff changeset
213 System.out.println("DescribeCollectionServiceImpl.parseThemeList");
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214
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diff changeset
215 NodeList themes = node.getElementsByTagNameNS(
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diff changeset
216 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
217 "facet");
524
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218
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diff changeset
219 int num = themes != null ? themes.getLength() : 0;
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diff changeset
220
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diff changeset
221 List<Theme> themeList = new ArrayList<Theme>(num);
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diff changeset
222
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diff changeset
223 for (int i = 0; i < num; i++) {
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diff changeset
224 Theme theme = parseTheme((Element)themes.item(i));
524
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225
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diff changeset
226 if (theme != null) {
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diff changeset
227 themeList.add(theme);
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228 }
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diff changeset
229 }
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diff changeset
230
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diff changeset
231 return new ThemeList(themeList);
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diff changeset
232 }
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233
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diff changeset
234
575
5277f46a63c2 The description of a facet is now displayed in the ChartThemePanel.
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diff changeset
235 protected Theme parseTheme(Element ele) {
524
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236 System.out.println("DescribeCollectionServiceImpl.parseTheme");
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237
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5277f46a63c2 The description of a facet is now displayed in the ChartThemePanel.
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238 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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239
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240 NamedNodeMap attrMap = ele.getAttributes();
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241 int attrNum = attrMap != null ? attrMap.getLength() : 0;
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242
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243 AttributedTheme t = new AttributedTheme();
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244
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245 for (int i = 0; i < attrNum; i++) {
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246 Node attr = attrMap.item(i);
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247
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248 String prefix = attr.getPrefix();
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249 String name = attr.getNodeName().replace(prefix + ":", "");
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250 String value = attr.getNodeValue();
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251
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252 t.addAttr(name, value);
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253 }
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254
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255 return t;
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256 }
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257
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258
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259 /**
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260 * This method extracts the CollectionItem from <i>node</i> with its output
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261 * modes. The output modes are parsed using the parseOutputModes() method.
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262 *
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263 * @param node A node that contains information about a CollectionItem.
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264 *
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265 * @return a CollectionItem.
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266 */
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267 protected CollectionItem parseCollectionItem(Element node) {
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268 System.out.println("AddArtifactServiceImpl.parseCollectionItem");
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269
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270 if (node == null) {
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271 System.err.println("The node for parsing CollectionItem is null!");
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272 return null;
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273 }
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274
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275 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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276
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277 String uuid = node.getAttributeNS(uri, "uuid");
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278 String hash = node.getAttributeNS(uri, "hash");
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279
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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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280 if (uuid == null || uuid.length() == 0) {
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281 System.err.println("Found an invalid CollectionItem!");
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282 return null;
99
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283 }
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284
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285 NodeList outputmodes = node.getElementsByTagNameNS(uri, "outputmodes");
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286
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287 if (outputmodes.getLength() < 1) {
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288 return null;
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289 }
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290
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291 Element om = (Element)outputmodes.item(0);
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292
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293 List<OutputMode> modes = parseOutputModes(om);
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294
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295 return new DefaultCollectionItem(uuid, hash, modes);
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296 }
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297
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298
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299 /**
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300 * This method extracts the OutputModes available for a specific
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301 * CollectionItem and returns them as list.
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302 *
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303 * @param node The root node of the outputmodes list.
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304 *
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305 * @return a list of OutputModes.
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306 */
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307 protected List<OutputMode> parseOutputModes(Element node) {
99
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308 System.out.println("AddArtifactServiceImpl.parseOutputModes");
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309
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310 if (node == null) {
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311 System.err.println("The node for parsing OutputModes is null!");
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312 return null;
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diff changeset
313 }
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314
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diff changeset
315 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
99
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diff changeset
316
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317 NodeList list = node.getElementsByTagNameNS(uri, "output");
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diff changeset
318
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diff changeset
319 int size = list.getLength();
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diff changeset
320
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321 if (size == 0) {
99
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322 System.err.println("No outputmode nodes found!");
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323 return null;
5c3d685546a6 Added a new service to describe collections.
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diff changeset
324 }
5c3d685546a6 Added a new service to describe collections.
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325
5c3d685546a6 Added a new service to describe collections.
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326 List<OutputMode> modes = new ArrayList<OutputMode>(size);
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diff changeset
327
5c3d685546a6 Added a new service to describe collections.
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diff changeset
328 for (int i = 0; i < size; i++) {
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diff changeset
329 Element tmp = (Element)list.item(i);
99
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diff changeset
330
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diff changeset
331 String name = tmp.getAttributeNS(uri, "name");
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diff changeset
332 String desc = tmp.getAttributeNS(uri, "description");
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diff changeset
333 String mime = tmp.getAttributeNS(uri, "mime-type");
796
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diff changeset
334 String type = tmp.getAttributeNS(uri, "type");
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335
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diff changeset
336 if (name.length() == 0) {
99
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337 System.err.println("Found an invalid output mode.");
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diff changeset
338 continue;
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diff changeset
339 }
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diff changeset
340
270
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
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diff changeset
341 OutputMode outmode = null;
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diff changeset
342 List<Facet> fs = extractFacets(tmp);
99
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diff changeset
343
796
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diff changeset
344 if (type.equals("export")) {
270
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diff changeset
345 outmode = new ExportMode(name, desc, mime, fs);
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346 }
796
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diff changeset
347 else if (type.equals("report")) {
589
942bd0e7e332 Filter reports and dispatch them to updateReports().
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parents: 587
diff changeset
348 outmode = new ReportMode(name, desc, mime, fs);
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parents: 587
diff changeset
349 }
796
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diff changeset
350 else if (type.equals("chart")){
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diff changeset
351 outmode = new ChartMode(name, desc, mime, fs);
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352 }
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diff changeset
353 else if (type.equals("map")){
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diff changeset
354 outmode = new MapMode(name, desc, mime, fs);
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diff changeset
355 }
270
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parents: 229
diff changeset
356 else {
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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diff changeset
357 System.err.println("Broken Output mode without type found.");
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diff changeset
358 continue;
270
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diff changeset
359 }
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diff changeset
360
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diff changeset
361 modes.add(outmode);
99
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362 }
5c3d685546a6 Added a new service to describe collections.
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363
5c3d685546a6 Added a new service to describe collections.
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364 return modes;
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365 }
270
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366
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367
581
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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368 protected static List<Facet> extractFacets(Element outmode) {
809
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369 System.out.println("DescribeCollectionServiceImpl - extractFacets()");
270
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370
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371 NodeList facetList = (NodeList) XMLUtils.xpath(
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372 outmode,
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373 XPATH_FACETS,
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374 XPathConstants.NODESET,
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375 ArtifactNamespaceContext.INSTANCE);
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376
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377 int num = facetList != null ? facetList.getLength() : 0;
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378
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379 List<Facet> facets = new ArrayList<Facet>(num);
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380
575
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381 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
270
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382
575
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parents: 524
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383 for (int i = 0; i < num; i++) {
5277f46a63c2 The description of a facet is now displayed in the ChartThemePanel.
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384 Element facetEl = (Element) facetList.item(i);
270
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385
575
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parents: 524
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386 String name = facetEl.getAttributeNS(uri, "name");
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parents: 524
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387 String desc = facetEl.getAttributeNS(uri, "description");
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parents: 524
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388 String index = facetEl.getAttributeNS(uri, "index");
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parents: 524
diff changeset
389
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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390 if (name != null && name.length() > 0 && index != null) {
5277f46a63c2 The description of a facet is now displayed in the ChartThemePanel.
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391 facets.add(new DefaultFacet(name, Integer.valueOf(index),desc));
270
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392 }
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393 }
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parents: 229
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394
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
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parents: 229
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395 return facets;
d01b0d81b92a Parse the facets of a Collection and distinguish between an ordinary OutputMode and an ExportMode (new).
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parents: 229
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396 }
809
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 804
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397
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
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398
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
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399 public static List<Recommendation> parseRecommendations(Document doc) {
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parents: 804
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400 System.out.println("DescribeCollectionServiceImpl.parseRecommendations");
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parents: 804
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401
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parents: 804
diff changeset
402 NodeList list = (NodeList) XMLUtils.xpath(
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 804
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403 doc,
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 804
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404 XPATH_LOADED_RECOMMENDATIONS,
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 804
diff changeset
405 XPathConstants.NODESET,
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
406 ArtifactNamespaceContext.INSTANCE);
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 804
diff changeset
407
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
408 int num = list != null ? list.getLength() : 0;
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
409
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
410 List<Recommendation> recs = new ArrayList<Recommendation>(num);
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
411
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
412 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 804
diff changeset
413
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
414 for (int i = 0; i < num; i++) {
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
415 Element rec = (Element) list.item(i);
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
416
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
417 String factory = rec.getAttributeNS(uri, "factory");
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
418 String dbids = rec.getAttributeNS(uri, "db-ids");
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
419
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
420 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.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 804
diff changeset
421 recs.add(new DefaultRecommendation(factory, dbids));
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 804
diff changeset
422 }
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
423 }
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
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 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
426 }
99
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
427 }
5c3d685546a6 Added a new service to describe collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
428 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org