1 | package org.greenstone.gsdl3.service;
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2 |
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3 | import java.io.File;
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4 |
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5 | import org.apache.log4j.Logger;
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6 | import org.greenstone.gsdl3.util.GSFile;
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7 | import org.greenstone.gsdl3.util.GSXML;
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8 | import org.greenstone.gsdl3.util.Request;
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9 | import org.greenstone.gsdl3.util.UserContext;
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10 | import org.greenstone.gsdl3.util.XMLConverter;
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11 | import org.w3c.dom.Document;
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12 | import org.w3c.dom.Element;
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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 java.util.Set;
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17 |
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18 | import javax.xml.xpath.XPathConstants;
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19 | import javax.xml.xpath.XPathExpression;
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20 | import javax.xml.xpath.XPathExpressionException;
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21 | import javax.xml.xpath.XPathFactory;
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22 |
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23 | import java.util.HashSet;
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24 | import java.util.Iterator;
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25 |
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26 | public class CollectionGroups extends ServiceRack {
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27 |
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28 | private Element hierarchy = null;
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29 | private Element groupDesc = null;
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30 |
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31 | public static final String GROUP_CONTENT = "GroupCurrentContent";
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32 | public static final String UNIQUE_COLLECTIONS = "UniqueCollections";
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33 | public static final String COLLECTIONS_HIERARCHY = "CollectionsHierarchy";
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34 |
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35 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.service.BerryBasket.class.getName());
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36 |
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37 | @Override
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38 | protected Element getServiceDescription(Document doc, String service, String lang, String subset) {
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39 | // TODO Auto-generated method stub
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40 | return null;
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41 | }
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42 |
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43 | String[] _services = { GROUP_CONTENT, UNIQUE_COLLECTIONS, COLLECTIONS_HIERARCHY };
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44 |
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45 | public boolean configure(Element info, Element extra_info) {
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46 | if (!super.configure(info, extra_info)) {
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47 | return false;
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48 | }
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49 |
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50 | logger.info("Configuring CollectionGroups...");
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51 | this.config_info = info;
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52 |
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53 | for (int i = 0; i < _services.length; i++) {
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54 | Element service = this.desc_doc.createElement(GSXML.SERVICE_ELEM);
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55 | service.setAttribute(GSXML.TYPE_ATT, GSXML.SERVICE_TYPE_GROUPINFO);
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56 | service.setAttribute(GSXML.NAME_ATT, _services[i]);
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57 | this.short_service_info.appendChild(service);
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58 | }
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59 | // Load group configuration from file
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60 | return readGroupConfiguration();
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61 | }
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62 |
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63 | protected Element processGroupCurrentContent(Element request) {
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64 |
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65 | Document doc = XMLConverter.newDOM();
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66 | UserContext userContext = new UserContext(request);
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67 |
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68 | // Prepare basic response
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69 | Element result = GSXML.createBasicResponse(doc, GSXML.SERVICE_TYPE_GROUPINFO);
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70 |
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71 |
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72 | // Get param list from request
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73 | Element paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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74 | // Set default group path (main page)
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75 | String groupPath = "";
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76 | // If param list not null and group param exists extract value and
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77 | // override groupPath variable
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78 | if (paramList != null) {
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79 | Element paramGroup = GSXML.getNamedElement(paramList, GSXML.PARAM_ELEM, GSXML.NAME_ATT, GSXML.GROUP_ELEM);
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80 | if (paramGroup != null) {
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81 | groupPath = paramGroup.getAttribute(GSXML.VALUE_ATT);
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82 | }
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83 | }
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84 | //Remove leading, ending / and dupliclated /
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85 | groupPath = groupPath.replaceAll("(/+)", "/");
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86 | groupPath = groupPath.replaceAll("(^/+)|(/+$)", "");
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87 |
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88 | Element mrCollectionList = getAvailableCollectionList(userContext);
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89 | if (mrCollectionList == null){
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90 | result.appendChild(doc.createElement(GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER));
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91 | return result;
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92 | }
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93 | //Get current groups and collections
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94 | Element groupContent = getRawCurrentContent(groupPath);
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95 |
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96 | //Get ungrouped collection list
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97 | Element ungroupedCollections = getUngroupedCollections(mrCollectionList);
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98 |
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99 | // If groupContent is empty return empty collection list
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100 | if (groupContent == null) {
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101 | result.appendChild(doc.createElement(GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER));
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102 | return result;
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103 | }
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104 | NodeList currentContent = groupContent.getChildNodes();
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105 | if (currentContent != null && currentContent.getLength() > 0) {
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106 | // Create CollectionList element in response
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107 | Element result_collection_list = doc.createElement(GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
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108 | result.appendChild(result_collection_list);
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109 | Element result_group_list = doc.createElement(GSXML.GROUP_ELEM + GSXML.LIST_MODIFIER);
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110 | result.appendChild(result_group_list);
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111 | // Iterate over collections from current view
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112 | // i represents current position in groupConfig.xml
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113 | int i;
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114 | for (i=0; i < currentContent.getLength(); i++) {
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115 | //logger.warn("NODE CuR Content" + GSXML.xmlNodeToString(currentContent.item(i)));
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116 |
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117 | if (currentContent.item(i).getNodeName() == GSXML.COLLECTION_ELEM) {
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118 |
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119 | Element collection = (Element) currentContent.item(i);
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120 | String collection_name = collection.getAttribute(GSXML.NAME_ATT);
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121 | // Check whether collection from current view exists in message router response
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122 | Element checkedCollection = GSXML.getNamedElement(mrCollectionList, GSXML.COLLECTION_ELEM,GSXML.NAME_ATT, collection_name);
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123 | if (checkedCollection != null) {
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124 | //Set position value
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125 | checkedCollection.setAttribute(GSXML.POSITION_ATT, String.valueOf(i));
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126 | // Add collection to response
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127 | result_collection_list.appendChild(doc.importNode(checkedCollection, true));
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128 | }
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129 |
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130 | //Iterate over groups in current view
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131 | } else if (currentContent.item(i).getNodeName() == GSXML.GROUP_ELEM) {
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132 | Element currentGroup = (Element) currentContent.item(i);
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133 | String currentGroupName = currentGroup.getAttribute(GSXML.NAME_ATT);
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134 | Element groupDescription = getGroupDescription(currentGroupName);
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135 |
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136 | groupDescription.setAttribute(GSXML.POSITION_ATT, String.valueOf(i));
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137 | result_group_list.appendChild(doc.importNode(groupDescription, true));
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138 | }
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139 |
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140 | }
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141 | //Add ungrouped collections if groupPath /+ or "" or null
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142 | if (groupPath.isEmpty()) {
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143 |
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144 | //Add each ungrouped collection to the collection list in loop
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145 | NodeList ungroupedCollectionNodes = GSXML.getChildrenByTagName(ungroupedCollections, GSXML.COLLECTION_ATT);
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146 | if (ungroupedCollectionNodes != null) {
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147 | for (int j = 0; j < ungroupedCollectionNodes.getLength(); j++) {
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148 | //logger.warn("UNGROUPED COLL ELEM" + GSXML.xmlNodeToString(ungroupedCollections).intern());
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149 | Element ungroupedCollection = (Element) doc.importNode(ungroupedCollectionNodes.item(j), true);
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150 | ungroupedCollection.setAttribute(GSXML.POSITION_ATT, String.valueOf(i++));
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151 | result_collection_list.appendChild(ungroupedCollection);
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152 | }
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153 | }
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154 |
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155 | } else {
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156 | Element groupDescription = getPathInfo(groupPath);
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157 | if (groupContent != null){
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158 | result.appendChild(doc.importNode(groupDescription, true));
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159 | }
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160 | }
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161 | }
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162 |
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163 | return result;
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164 | }
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165 |
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166 | protected Element processUniqueCollections(Element request) {
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167 | Document doc = XMLConverter.newDOM();
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168 | UserContext userContext = new UserContext(request);
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169 | // Prepare basic response
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170 | Element result = GSXML.createBasicResponse(doc, GSXML.SERVICE_TYPE_GROUPINFO);
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171 | Element resultCollections = doc.createElement(GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
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172 | result.appendChild(resultCollections);
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173 | Element mrCollectionList = getAvailableCollectionList(userContext);
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174 | //Collections from message router check
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175 | if (mrCollectionList == null){
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176 | logger.error("mrCollectionList is null!");
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177 | return result;
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178 | }
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179 | //paramList check
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180 | Element paramList = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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181 | if (paramList == null) {
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182 | logger.error("UniqueCollections request had no paramList.");
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183 | return result;
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184 | }
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185 | //Add collections from request
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186 | Set<String> uniq_colls = new HashSet<String>();
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187 | Element collParam = GSXML.getNamedElement(paramList, GSXML.PARAM_ELEM, GSXML.NAME_ATT, GSXML.COLLECTION_ELEM);
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188 | if (collParam != null){
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189 | String colls = GSXML.getValue(collParam);
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190 | if (!colls.isEmpty())
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191 | {
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192 | String[] _colls = colls.split(",");
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193 | for (int i=0;i < _colls.length;i++){
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194 | uniq_colls.add(_colls[i]);
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195 | }
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196 | }
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197 | }
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198 | //groupParam check
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199 | Element groupParam = GSXML.getNamedElement(paramList, GSXML.PARAM_ELEM, GSXML.NAME_ATT, GSXML.GROUP_ELEM);
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200 | if (groupParam == null) {
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201 | logger.error("UniqueCollections request had no groupParam.");
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202 | return result;
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203 | }
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204 | //Add collections from groups
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205 | String[] groups = null;
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206 | groups = GSXML.getValue(groupParam).split(",");
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207 | for (int i = 0; i < groups.length; i++) {
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208 | if (!groups[i].isEmpty()) {
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209 | Element groupContent = getRawCurrentContent(groups[i]);
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210 | // If group exists
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211 | if (groupContent != null) {
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212 | NodeList collectionNodes = groupContent.getElementsByTagName(GSXML.COLLECTION_ELEM);
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213 | for (int j = 0; j < collectionNodes.getLength(); j++) {
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214 | String collName = ((Element) collectionNodes.item(j)).getAttribute(GSXML.NAME_ATT);
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215 | uniq_colls.add(collName);
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216 | }
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217 | }
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218 | }
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219 |
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220 | }
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221 | //Fill result collectionList
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222 | for (Iterator<String> iterator = uniq_colls.iterator(); iterator.hasNext();) {
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223 | String collectionName = (String) iterator.next();
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224 | Element checkedCollection = GSXML.getNamedElement(mrCollectionList, GSXML.COLLECTION_ELEM,GSXML.NAME_ATT, collectionName);
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225 | if (checkedCollection != null){
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226 | resultCollections.appendChild(doc.importNode(checkedCollection, true));
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227 | }
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228 | }
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229 | return result;
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230 |
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231 | }
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232 |
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233 | protected Element processCollectionsHierarchy(Element request){
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234 |
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235 | Document doc = XMLConverter.newDOM();
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236 | UserContext userContext = new UserContext(request);
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237 | // Prepare basic response
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238 | Element result = GSXML.createBasicResponse(doc, GSXML.SERVICE_TYPE_GROUPINFO);
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239 | String currentPath = "";
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240 | Element currentContent = getRawCurrentContent(currentPath);
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241 | if (currentContent == null){
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242 | return result;
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243 | }
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244 | Element searchableCollectionList = getSearchableCollectionList(userContext);
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245 | if (searchableCollectionList == null){
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246 | return result;
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247 | }
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248 |
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249 | //Get ungrouped collection list
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250 | sanitizeCurrentContent(currentContent, searchableCollectionList);
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251 | addGroupInfo(currentContent, currentPath);
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252 | addUngroupedCollections(currentContent, searchableCollectionList);
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253 | addAllOption(currentContent);
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254 | result.appendChild(doc.importNode(currentContent, true));
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255 | return result;
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256 | }
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257 |
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258 | private void addAllOption(Element currentContent) {
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259 | if (currentContent == null){
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260 | return;
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261 | }
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262 | Document doc = currentContent.getOwnerDocument();
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263 | Element allOption = doc.createElement(GSXML.COLLECTION_ELEM);
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264 | allOption.setAttribute(GSXML.NAME_ATT, "all");
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265 | if (currentContent.hasChildNodes()){
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266 | currentContent.insertBefore(allOption,currentContent.getFirstChild());
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267 | } else
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268 | currentContent.appendChild(allOption);
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269 |
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270 |
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271 | }
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272 |
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273 | private void addGroupInfo(Element currentContent, String groupPath) {
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274 | NodeList groups = GSXML.getChildrenByTagName(currentContent,GSXML.GROUP_ELEM);
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275 | for (int i=0;i<groups.getLength();i++){
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276 | Element group = (Element) groups.item(i);
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277 | String name = group.getAttribute(GSXML.NAME_ATT);
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278 | String newPath = groupPath + "/" + name;
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279 | group.setAttribute(GSXML.PATH_ATT, newPath);
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280 | Element groupDescription = getGroupDescription(name);
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281 | Element titleEl = (Element) GSXML.getChildByTagName(groupDescription, GSXML.TITLE_ELEM);
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282 | String title;
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283 | if (titleEl != null) {
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284 | title = titleEl.getTextContent();
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285 | } else {
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286 | title = name;
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287 | }
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288 | group.setAttribute(GSXML.TITLE_ELEM, title );
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289 | addGroupInfo(group, newPath);
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290 | }
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291 |
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292 | }
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293 |
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294 | private Element getRawCurrentContent(String path) {
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295 |
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296 | if (path == null) {
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297 | path = "";
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298 | }
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299 |
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300 | Document doc = XMLConverter.newDOM();
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301 | path = path.replaceAll("(/+)", "/");
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302 | path = path.replaceAll("(^/+)|(/+$)", "");
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303 |
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304 | String[] pathSteps = path.split("/");
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305 |
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306 |
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307 | Element currentContent = (Element) hierarchy.cloneNode(true);
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308 | // Get the current view
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309 | for (int i = 0; i < pathSteps.length; i++) {
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310 | if (!pathSteps[i].isEmpty()) {
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311 | currentContent = GSXML.getNamedElement(currentContent, GSXML.GROUP_ELEM, GSXML.NAME_ATT, pathSteps[i]);
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312 | if (currentContent == null){
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313 | break;
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314 | }
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315 | }
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316 | }
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317 | if (currentContent == null || !currentContent.hasChildNodes()) {
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318 | // Return to the main page
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319 | return null;
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320 | }
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321 | return currentContent;
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322 | }
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323 |
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324 | private void sanitizeCurrentContent(Element currentContent, Element checkedCollectionList){
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325 | if (currentContent == null){
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326 | return;
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327 | }
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328 | NodeList nodes = currentContent.getElementsByTagName(GSXML.COLLECTION_ELEM);
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329 | for (int i = 0; i < nodes.getLength(); i++) {
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330 | Element element = (Element) nodes.item(i);
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331 | String name = element.getAttribute(GSXML.NAME_ATT);
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332 | Element checkedCollection = GSXML.getNamedElement(checkedCollectionList, GSXML.COLLECTION_ELEM, GSXML.NAME_ATT, name);
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333 | if (checkedCollection == null) {
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334 | element.getParentNode().removeChild(element);
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335 | i--;
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336 | }
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337 | }
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338 | }
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339 |
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340 | private void addUngroupedCollections(Element currentContent, Element availableCollections){
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341 | if (currentContent == null){
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342 | return;
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343 | }
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344 | Document doc = currentContent.getOwnerDocument();
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345 | NodeList collectionList = availableCollections.getElementsByTagName(GSXML.COLLECTION_ELEM);
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346 | for (int i = 0; i < collectionList.getLength();i++){
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347 | Element collection = (Element) collectionList.item(i);
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348 | String name = collection.getAttribute(GSXML.NAME_ATT);
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349 | NodeList foundCollection = GSXML.getNamedElements(currentContent, GSXML.COLLECTION_ELEM, GSXML.NAME_ATT, name);
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350 | if (foundCollection.getLength() == 0){
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351 | Element ungroupedCollection = doc.createElement(GSXML.COLLECTION_ELEM);
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352 | ungroupedCollection.setAttribute(GSXML.NAME_ATT, name);
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353 | currentContent.appendChild(ungroupedCollection);
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354 | }
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355 | }
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356 |
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357 | }
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358 |
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359 | private boolean readGroupConfiguration() {
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360 |
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361 | File configFile = new File(GSFile.groupConfigFile(site_home));
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362 | //
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363 | if (!configFile.exists()) {
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364 | logger.info("Groups config file " + configFile.getPath() + " does not exist.");
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365 | return false;
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366 | }
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367 | Document doc;
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368 | Element content;
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369 | try {
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370 | doc = XMLConverter.getDOM(configFile);
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371 | content = doc.getDocumentElement();
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372 | } catch (Exception e) {
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373 | System.out.println(e.getClass());
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374 | e.printStackTrace();
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375 | return false;
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376 | }
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377 | // XPath to find empty text nodes.
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378 | try {
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379 | XPathFactory xpathFactory = XPathFactory.newInstance();
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380 | XPathExpression xpathExp = xpathFactory.newXPath().compile("//text()[normalize-space(.) = '']");
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381 | NodeList emptyTextNodes = (NodeList) xpathExp.evaluate(doc, XPathConstants.NODESET);
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382 | for (int i = 0; i < emptyTextNodes.getLength(); i++) {
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383 | Node emptyTextNode = emptyTextNodes.item(i);
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384 | emptyTextNode.getParentNode().removeChild(emptyTextNode);
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385 | }
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386 |
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387 | } catch (XPathExpressionException e) {
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388 | logger.error("Error occurred while trying to remove emtpy nodes from groupConfig.xml");
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389 | e.printStackTrace();
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390 | return false;
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391 | }
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392 |
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393 | hierarchy = (Element) GSXML.getChildByTagName(content, GSXML.HIERARCHY_ELEM);
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394 | groupDesc = (Element) GSXML.getChildByTagName(content, GSXML.GROUP_DESC_ELEM);
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395 | if (hierarchy == null){
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396 | logger.error("<groupConfig> has no <hierarchy> element, ignoring it.");
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397 | return false;
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398 | }
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399 | verifyGroupDescription(doc);
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400 | return true;
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401 | }
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402 |
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403 | private void verifyGroupDescription(Document doc) {
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404 | if (groupDesc == null) {
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405 | // we set up one for ourselves
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406 | groupDesc = doc.createElement(GSXML.GROUP_DESC_ELEM);
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407 | }
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408 |
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409 | // Document doc = groupDesc.getOwnerDocument();
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410 | NodeList groups = hierarchy.getElementsByTagName(GSXML.GROUP_ELEM);
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411 | for (int i = 0; i < groups.getLength(); i++) {
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412 | Element group = (Element) groups.item(i);
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413 | String name = group.getAttribute(GSXML.NAME_ATT);
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414 | Element foundDescription = GSXML.getNamedElement(groupDesc, GSXML.GROUP_ELEM, GSXML.NAME_ATT, name);
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415 | if (foundDescription == null){
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416 | Element defaultDescription = doc.createElement(GSXML.GROUP_ELEM);
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417 | defaultDescription.setAttribute(GSXML.NAME_ATT, name);
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418 | Element groupTitle = doc.createElement(GSXML.TITLE_ELEM);
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419 | groupTitle.setTextContent(name);
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420 | defaultDescription.appendChild(groupTitle);
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421 | groupDesc.appendChild(defaultDescription);
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422 | }
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423 | }
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424 |
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425 | }
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426 |
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427 | private Element getGroupDescription(String name) {
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428 | Element description = (Element) GSXML.getNamedElement(groupDesc, GSXML.GROUP_ELEM, GSXML.NAME_ATT, name);
|
---|
429 | if (description == null) {
|
---|
430 | logger.error("GroupDescription is not defined. Check your groupConfig.xml");
|
---|
431 | }
|
---|
432 | return description;
|
---|
433 | }
|
---|
434 |
|
---|
435 | private Element getUngroupedCollections(Element mr_collection_list) {
|
---|
436 |
|
---|
437 | Document doc = XMLConverter.newDOM();
|
---|
438 | // Create Set
|
---|
439 | Set<String> hierarchy_unique_collections = new HashSet<String>();
|
---|
440 | // Element hierarchyCollections = doc.createElement("coll_list");
|
---|
441 | // Get collection nodes
|
---|
442 |
|
---|
443 | NodeList hierarchy_all_collection_list = hierarchy.getElementsByTagName(GSXML.COLLECTION_ELEM);
|
---|
444 | // Save hierarchy collection names to Hashset
|
---|
445 | for (int i = 0; i < hierarchy_all_collection_list.getLength(); i++) {
|
---|
446 | Element collection_element = (Element) hierarchy_all_collection_list.item(i);
|
---|
447 | hierarchy_unique_collections.add(collection_element.getAttribute(GSXML.NAME_ATT));
|
---|
448 | }
|
---|
449 | // Save available by message router collection names to Hashset
|
---|
450 | Set<String> mr_collections = new HashSet<String>();
|
---|
451 | NodeList mr_coll_list = mr_collection_list.getElementsByTagName(GSXML.COLLECTION_ELEM);
|
---|
452 |
|
---|
453 | for (int i = 0; i < mr_coll_list.getLength(); i++) {
|
---|
454 | Element collection_element = (Element) mr_coll_list.item(i);
|
---|
455 | mr_collections.add(collection_element.getAttribute(GSXML.NAME_ATT));
|
---|
456 | }
|
---|
457 | //Save collections available by message router and not existed in hierarchy to ungrouped collections set
|
---|
458 | Set<String> ungrouped_collections = new HashSet<String>();
|
---|
459 | for (String string : mr_collections) {
|
---|
460 | if (!hierarchy_unique_collections.contains(string)){
|
---|
461 | ungrouped_collections.add(string);
|
---|
462 | }
|
---|
463 | }
|
---|
464 | //Output
|
---|
465 | Element result = doc.createElement(GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
|
---|
466 | for (String name : ungrouped_collections) {
|
---|
467 | Element collection = doc.createElement(GSXML.COLLECTION_ELEM);
|
---|
468 | collection.setAttribute(GSXML.NAME_ATT, name);
|
---|
469 | result.appendChild(collection);
|
---|
470 | }
|
---|
471 | return result;
|
---|
472 |
|
---|
473 | }
|
---|
474 | private Element getPathInfo(String path) {
|
---|
475 |
|
---|
476 | Document doc = XMLConverter.newDOM();
|
---|
477 |
|
---|
478 | if (path == null) {
|
---|
479 | path = "";
|
---|
480 | }
|
---|
481 | String[] pathSteps = path.split("/");
|
---|
482 |
|
---|
483 | Element pathInfo = doc.createElement(GSXML.PATH_ELEM + GSXML.LIST_MODIFIER);
|
---|
484 |
|
---|
485 | String currentPath = "";
|
---|
486 | boolean first = true;
|
---|
487 | for (int i = 0; i < pathSteps.length; i++) {
|
---|
488 | if (!pathSteps[i].isEmpty()) {
|
---|
489 | if (first) {
|
---|
490 | first = false;
|
---|
491 | } else {
|
---|
492 | currentPath += "/";
|
---|
493 | }
|
---|
494 | currentPath += pathSteps[i];
|
---|
495 | Element pathStepDescription = getGroupDescription(pathSteps[i]);
|
---|
496 | if (pathStepDescription != null){
|
---|
497 | pathStepDescription.setAttribute(GSXML.POSITION_ATT, String.valueOf(i));
|
---|
498 | pathStepDescription.setAttribute(GSXML.PATH_ATT, currentPath);
|
---|
499 | }
|
---|
500 | pathInfo.appendChild(doc.importNode(pathStepDescription, true));
|
---|
501 | }
|
---|
502 | }
|
---|
503 |
|
---|
504 | return pathInfo;
|
---|
505 | }
|
---|
506 | private Element getAvailableCollectionList(UserContext userContext){
|
---|
507 | Document doc = XMLConverter.newDOM();
|
---|
508 | // Get the message router info
|
---|
509 | Element inforesponseMessage = new Request(doc, userContext, router, GSXML.REQUEST_TYPE_DESCRIBE).send();
|
---|
510 | if (inforesponseMessage == null) {
|
---|
511 | logger.error(" couldn't query the message router!");
|
---|
512 | return null;
|
---|
513 | }
|
---|
514 | Element mr_info_response = (Element) GSXML.getChildByTagName(inforesponseMessage, GSXML.RESPONSE_ELEM);
|
---|
515 | if (mr_info_response == null) {
|
---|
516 | logger.error("Message router response is null!");
|
---|
517 | return null;
|
---|
518 | }
|
---|
519 |
|
---|
520 | Element mr_collection_list = (Element) GSXML.getChildByTagName(mr_info_response, GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
|
---|
521 |
|
---|
522 | return mr_collection_list;
|
---|
523 | }
|
---|
524 | private Element getSearchableCollectionList(UserContext userContext){
|
---|
525 | Document doc = XMLConverter.newDOM();
|
---|
526 | Element collectionList = doc.createElement(GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
|
---|
527 | // Get the message router info
|
---|
528 | Element mr_info_message = doc.createElement(GSXML.MESSAGE_ELEM);
|
---|
529 | Element mr_request = GSXML.createBasicRequest(doc, GSXML.REQUEST_TYPE_DESCRIBE, "TextQuery" , userContext);
|
---|
530 | mr_info_message.appendChild(mr_request);
|
---|
531 | Element mr_info_response_message = (Element) this.router.process(mr_info_message);
|
---|
532 | if (mr_info_response_message == null) {
|
---|
533 | logger.error(" couldn't query the message router!");
|
---|
534 | return null;
|
---|
535 | }
|
---|
536 | NodeList options = mr_info_response_message.getElementsByTagName(GSXML.PARAM_OPTION_ELEM);
|
---|
537 | for (int i = 0; i < options.getLength(); i++) {
|
---|
538 | Element option = (Element) options.item(i);
|
---|
539 | String name = option.getAttribute(GSXML.NAME_ATT);
|
---|
540 | if (name.equals("all")){
|
---|
541 | continue;
|
---|
542 | }
|
---|
543 | Element collection = doc.createElement(GSXML.COLLECTION_ELEM);
|
---|
544 | collection.setAttribute(GSXML.NAME_ATT, name);
|
---|
545 | collectionList.appendChild(collection);
|
---|
546 | }
|
---|
547 | return collectionList;
|
---|
548 | }
|
---|
549 | }
|
---|