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annotate flys-client/src/main/java/de/intevation/flys/client/server/DescribeCollectionServiceImpl.java @ 804:374712890b94

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Facets read from Collection's DESCRIBE document keep all their attributes after the Collection's attribute has been modified. flys-client/trunk@2362 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 19 Jul 2011 16:32:52 +0000
parents cd8603aaa730
children e9337488bac3
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.DefaultTheme;
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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.Theme;
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42 import de.intevation.flys.client.shared.model.ThemeList;
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43 import de.intevation.flys.client.client.services.DescribeCollectionService;
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44
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45
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46 /**
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47 * This service implements a method that queries the DESCRIBE document of a
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48 * specific collection and returns a Collection object with the information of
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49 * the document.
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50 *
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51 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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52 */
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53 public class DescribeCollectionServiceImpl
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54 extends RemoteServiceServlet
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55 implements DescribeCollectionService
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56 {
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57 /** The error message key that is thrown if an error occured while
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58 * describe() a Collection.*/
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59 public static final String ERROR_DESCRIBE_COLLECTION =
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60 "error_describe_collection";
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61
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62 public static final String XPATH_FACETS = "art:facets/art:facet";
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63
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64
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65 public Collection describe(String uuid, String serverUrl, String locale)
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66 throws ServerException
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67 {
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68 System.out.println("DescribeCollectionServiceImpl.describe");
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69
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70 Document describe = ClientProtocolUtils.newDescribeCollectionDocument(
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71 uuid);
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72
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73 HttpClient client = new HttpClientImpl(serverUrl, locale);
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74
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75 try {
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76 Document response = (Document) client.doCollectionAction(
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77 describe, uuid, new DocumentResponseHandler());
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78
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79 Collection c = parseCollection(response);
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80
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81 if (c == null) {
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82 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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83 }
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84
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85 System.out.println("Collection successfully parsed.");
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86
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87 return c;
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88 }
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89 catch (ConnectionException ce) {
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90 System.err.println(ce.getLocalizedMessage());
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91 }
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92
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93 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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94 }
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95
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96
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97 /**
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98 * This method takes the DESCRIBE document of the Collections describe()
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99 * operation and extracts the information about the collection itself and
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100 * the collection items.
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101 *
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102 * @param description The DESCRIBE document of the Collections describe()
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103 * operation.
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104 *
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105 * @return a Collection with CollectionItems.
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106 */
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107 protected Collection parseCollection(Document description) {
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108 System.out.println("AddArtifactServiceImpl.parseCollection");
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109
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110 if (description == null) {
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111 System.err.println("The DESCRIBE of the Collection is null!");
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112 return null;
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113 }
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114
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115 String uuid = XMLUtils.xpathString(
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116 description,
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117 "art:artifact-collection/@art:uuid",
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118 ArtifactNamespaceContext.INSTANCE);
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119
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120 String ttlStr = XMLUtils.xpathString(
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121 description,
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122 "art:artifact-collection/@art:ttl",
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diff changeset
123 ArtifactNamespaceContext.INSTANCE);
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124
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125 if (uuid.length() == 0 || ttlStr.length() == 0) {
99
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126 System.err.println("Found an invalid Collection!");
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127 return null;
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128 }
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129
587
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130
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131 long ttl = -1;
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132 try {
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133 ttl = Long.valueOf(ttlStr);
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134 }
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135 catch (NumberFormatException nfe) {
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136 // do nothing
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137 }
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138
524
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139 Map<String, ThemeList> themeList = parseThemeLists(description);
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140
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141 Collection c = !themeList.isEmpty()
587
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142 ? new DefaultCollection(uuid, ttl, themeList)
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143 : new DefaultCollection(uuid, ttl);
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144
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145 NodeList items = (NodeList) XMLUtils.xpath(
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146 description,
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147 "art:artifact-collection/art:artifacts/art:artifact",
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148 XPathConstants.NODESET,
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149 ArtifactNamespaceContext.INSTANCE);
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150
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151 if (items == null || items.getLength() == 0) {
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152 System.out.println("No collection item found for this collection.");
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153
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154 return c;
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155 }
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156
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157 int size = items.getLength();
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158
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159 for (int i = 0; i < size; i++) {
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160 CollectionItem item = parseCollectionItem((Element)items.item(i));
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161
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162 if (item != null) {
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163 c.addItem(item);
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164 }
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165 }
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166
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167 System.out.println(
5c3d685546a6 Added a new service to describe collections.
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168 "Found " + c.getItemLength() + " collection items " +
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169 "for the Collection '" + c.identifier() + "'.");
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170
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171 return c;
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172 }
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173
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174
524
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175 protected Map<String, ThemeList> parseThemeLists(Document description) {
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176 System.out.println("DescribeCollectionServiceImpl.parseThemeLists");
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177
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178 NodeList lists = (NodeList) XMLUtils.xpath(
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179 description,
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180 "/art:artifact-collection/art:attribute/art:outputs/art:output",
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181 XPathConstants.NODESET,
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diff changeset
182 ArtifactNamespaceContext.INSTANCE);
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183
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184 int num = lists != null ? lists.getLength() : 0;
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185
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186 Map<String, ThemeList> themeList = new HashMap<String, ThemeList>(num);
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187
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188 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
524
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189
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190 for (int i = 0; i < num; i++) {
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191 Element node = (Element)lists.item(i);
524
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192
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193 String outName = node.getAttribute("name");
524
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194
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195 if (outName.length() > 0) {
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196 ThemeList list = parseThemeList(node);
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197 if (list.getThemeCount() > 0) {
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198 themeList.put(outName, list);
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199 }
524
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200 }
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201 }
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202
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203 return themeList;
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204 }
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205
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206
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207 protected ThemeList parseThemeList(Element node) {
524
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208 System.out.println("DescribeCollectionServiceImpl.parseThemeList");
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diff changeset
209
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diff changeset
210 NodeList themes = node.getElementsByTagNameNS(
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diff changeset
211 ArtifactNamespaceContext.NAMESPACE_URI,
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diff changeset
212 "facet");
524
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213
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diff changeset
214 int num = themes != null ? themes.getLength() : 0;
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215
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diff changeset
216 List<Theme> themeList = new ArrayList<Theme>(num);
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diff changeset
217
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diff changeset
218 for (int i = 0; i < num; i++) {
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diff changeset
219 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
220
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diff changeset
221 if (theme != null) {
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diff changeset
222 themeList.add(theme);
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diff changeset
223 }
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diff changeset
224 }
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diff changeset
225
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diff changeset
226 return new ThemeList(themeList);
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diff changeset
227 }
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228
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diff changeset
229
575
5277f46a63c2 The description of a facet is now displayed in the ChartThemePanel.
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diff changeset
230 protected Theme parseTheme(Element ele) {
524
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diff changeset
231 System.out.println("DescribeCollectionServiceImpl.parseTheme");
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diff changeset
232
575
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diff changeset
233 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
524
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diff changeset
234
804
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diff changeset
235 NamedNodeMap attrMap = ele.getAttributes();
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236 int attrNum = attrMap != null ? attrMap.getLength() : 0;
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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237
804
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diff changeset
238 AttributedTheme t = new AttributedTheme();
524
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239
804
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240 for (int i = 0; i < attrNum; i++) {
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241 Node attr = attrMap.item(i);
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242
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243 String prefix = attr.getPrefix();
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244 String name = attr.getNodeName().replace(prefix + ":", "");
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245 String value = attr.getNodeValue();
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246
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diff changeset
247 t.addAttr(name, value);
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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248 }
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249
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250 return t;
524
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251 }
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252
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253
99
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254 /**
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255 * This method extracts the CollectionItem from <i>node</i> with its output
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256 * modes. The output modes are parsed using the parseOutputModes() method.
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257 *
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258 * @param node A node that contains information about a CollectionItem.
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259 *
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260 * @return a CollectionItem.
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261 */
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262 protected CollectionItem parseCollectionItem(Element node) {
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263 System.out.println("AddArtifactServiceImpl.parseCollectionItem");
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264
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265 if (node == null) {
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266 System.err.println("The node for parsing CollectionItem is null!");
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267 return null;
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268 }
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269
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270 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
99
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271
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272 String uuid = node.getAttributeNS(uri, "uuid");
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273 String hash = node.getAttributeNS(uri, "hash");
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274
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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diff changeset
275 if (uuid == null || uuid.length() == 0) {
99
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276 System.err.println("Found an invalid CollectionItem!");
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277 return null;
99
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278 }
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279
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280 NodeList outputmodes = node.getElementsByTagNameNS(uri, "outputmodes");
99
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281
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diff changeset
282 if (outputmodes.getLength() < 1) {
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diff changeset
283 return null;
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diff changeset
284 }
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285
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diff changeset
286 Element om = (Element)outputmodes.item(0);
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287
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288 List<OutputMode> modes = parseOutputModes(om);
99
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289
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290 return new DefaultCollectionItem(uuid, hash, modes);
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291 }
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292
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293
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294 /**
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295 * This method extracts the OutputModes available for a specific
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296 * CollectionItem and returns them as list.
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297 *
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298 * @param node The root node of the outputmodes list.
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299 *
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300 * @return a list of OutputModes.
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diff changeset
301 */
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diff changeset
302 protected List<OutputMode> parseOutputModes(Element node) {
99
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303 System.out.println("AddArtifactServiceImpl.parseOutputModes");
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304
5c3d685546a6 Added a new service to describe collections.
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diff changeset
305 if (node == null) {
5c3d685546a6 Added a new service to describe collections.
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diff changeset
306 System.err.println("The node for parsing OutputModes is null!");
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diff changeset
307 return null;
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
308 }
5c3d685546a6 Added a new service to describe collections.
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diff changeset
309
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diff changeset
310 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
99
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diff changeset
311
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diff changeset
312 NodeList list = node.getElementsByTagNameNS(uri, "output");
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parents: 575
diff changeset
313
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parents: 575
diff changeset
314 int size = list.getLength();
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parents: 575
diff changeset
315
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diff changeset
316 if (size == 0) {
99
5c3d685546a6 Added a new service to describe collections.
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diff changeset
317 System.err.println("No outputmode nodes found!");
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
318 return null;
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
319 }
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
320
5c3d685546a6 Added a new service to describe collections.
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diff changeset
321 List<OutputMode> modes = new ArrayList<OutputMode>(size);
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parents:
diff changeset
322
5c3d685546a6 Added a new service to describe collections.
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diff changeset
323 for (int i = 0; i < size; i++) {
581
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parents: 575
diff changeset
324 Element tmp = (Element)list.item(i);
99
5c3d685546a6 Added a new service to describe collections.
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diff changeset
325
581
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diff changeset
326 String name = tmp.getAttributeNS(uri, "name");
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parents: 575
diff changeset
327 String desc = tmp.getAttributeNS(uri, "description");
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parents: 575
diff changeset
328 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
329 String type = tmp.getAttributeNS(uri, "type");
581
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diff changeset
330
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parents: 575
diff changeset
331 if (name.length() == 0) {
99
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diff changeset
332 System.err.println("Found an invalid output mode.");
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
333 continue;
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
334 }
5c3d685546a6 Added a new service to describe collections.
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diff changeset
335
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
336 OutputMode outmode = null;
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parents: 229
diff changeset
337 List<Facet> fs = extractFacets(tmp);
99
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diff changeset
338
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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diff changeset
339 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
340 outmode = new ExportMode(name, desc, mime, fs);
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diff changeset
341 }
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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diff changeset
342 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
343 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
344 }
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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diff changeset
345 else if (type.equals("chart")){
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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parents: 589
diff changeset
346 outmode = new ChartMode(name, desc, mime, fs);
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diff changeset
347 }
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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diff changeset
348 else if (type.equals("map")){
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diff changeset
349 outmode = new MapMode(name, desc, mime, fs);
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diff changeset
350 }
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
351 else {
796
cd8603aaa730 Improved the process of creating OutputTabs. Added support for map output.
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diff changeset
352 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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diff changeset
353 continue;
270
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diff changeset
354 }
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parents: 229
diff changeset
355
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diff changeset
356 modes.add(outmode);
99
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diff changeset
357 }
5c3d685546a6 Added a new service to describe collections.
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diff changeset
358
5c3d685546a6 Added a new service to describe collections.
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diff changeset
359 return modes;
5c3d685546a6 Added a new service to describe collections.
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parents:
diff changeset
360 }
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
361
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
362
581
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363 protected static List<Facet> extractFacets(Element outmode) {
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364 System.out.println("ArtifactDescriptionFactory - extractFacets()");
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365
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366 NodeList facetList = (NodeList) XMLUtils.xpath(
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367 outmode,
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368 XPATH_FACETS,
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369 XPathConstants.NODESET,
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370 ArtifactNamespaceContext.INSTANCE);
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371
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372 int num = facetList != null ? facetList.getLength() : 0;
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373
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374 List<Facet> facets = new ArrayList<Facet>(num);
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375
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376 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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377
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378 for (int i = 0; i < num; i++) {
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379 Element facetEl = (Element) facetList.item(i);
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380
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381 String name = facetEl.getAttributeNS(uri, "name");
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382 String desc = facetEl.getAttributeNS(uri, "description");
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383 String index = facetEl.getAttributeNS(uri, "index");
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384
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385 if (name != null && name.length() > 0 && index != null) {
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386 facets.add(new DefaultFacet(name, Integer.valueOf(index),desc));
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387 }
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388 }
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389
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390 return facets;
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391 }
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392 }
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393 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org