1 | /*
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2 | * DocXMLUtil.java
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3 | * Used to manipulate archive doc.xml files
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4 | *
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5 | * Copyright (C) 2005 New Zealand Digital Library, http://www.nzdl.org
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6 | *
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7 | * This program is free software; you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation; either version 2 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * This program is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with this program; if not, write to the Free Software
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19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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20 | */
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21 | package org.greenstone.gsdl3.service;
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22 |
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23 | import org.greenstone.gsdl3.util.GSDocumentModel;
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24 | import org.greenstone.gsdl3.util.GSPath;
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25 | import org.greenstone.gsdl3.util.GSXML;
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26 | import org.greenstone.gsdl3.util.UserContext;
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27 | import org.greenstone.gsdl3.util.XMLConverter;
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28 |
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29 | import org.w3c.dom.Document;
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30 | import org.w3c.dom.Element;
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31 | import org.w3c.dom.Node;
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32 | import org.w3c.dom.NodeList;
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33 |
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34 | import org.apache.log4j.*;
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35 |
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36 | import java.io.BufferedWriter;
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37 | import java.io.File;
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38 | import java.io.FileWriter;
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39 | import java.util.ArrayList;
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40 | import java.util.HashMap;
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41 |
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42 | import javax.xml.parsers.DocumentBuilderFactory;
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43 | import javax.xml.parsers.DocumentBuilder;
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44 | import javax.xml.transform.Result;
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45 | import javax.xml.transform.Transformer;
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46 | import javax.xml.transform.TransformerFactory;
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47 | import javax.xml.transform.dom.DOMSource;
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48 | import javax.xml.transform.stream.StreamResult;
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49 |
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50 | public class DocXMLUtil extends ServiceRack
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51 | {
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52 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.service.DocXMLUtil.class.getName());
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53 | GSDocumentModel _GSDM = null;
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54 |
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55 | /******************************************************************
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56 | * The list of services the doc.xml utility service rack supports *
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57 | *****************************************************************/
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58 | protected static final String DOC_XML_CREATE_EMPTY_FILE = "DocXMLCreateEmptyFile";
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59 | protected static final String DOC_XML_GET_METADATA = "DocXMLGetMetadata";
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60 | protected static final String DOC_XML_SET_METADATA = "DocXMLSetMetadata";
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61 | protected static final String DOC_XML_CREATE_SECTION = "DocXMLCreateSection";
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62 | protected static final String DOC_XML_DELETE_SECTION = "DocXMLDeleteSection";
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63 | protected static final String DOC_XML_GET_SECTION = "DocXMLGetSection";
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64 | protected static final String DOC_XML_SET_SECTION = "DocXMLSetSection";
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65 | protected static final String DOC_XML_GET_TEXT = "DocXMLGetText";
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66 | protected static final String DOC_XML_SET_TEXT = "DocXMLSetText";
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67 | protected static final String DOC_XML_DELETE_TEXT = "DocXMLDeleteText";
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68 | /*****************************************************************/
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69 |
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70 | String[] services = { DOC_XML_CREATE_EMPTY_FILE, DOC_XML_GET_METADATA, DOC_XML_SET_METADATA, DOC_XML_GET_SECTION, DOC_XML_SET_SECTION, DOC_XML_DELETE_SECTION, DOC_XML_GET_TEXT, DOC_XML_SET_TEXT };
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71 |
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72 | /** configure this service */
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73 | public boolean configure(Element info, Element extra_info)
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74 | {
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75 | if (!super.configure(info, extra_info))
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76 | {
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77 | return false;
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78 | }
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79 |
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80 | logger.info("Configuring DocXMLUtil...");
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81 | this.config_info = info;
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82 |
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83 | for (int i = 0; i < services.length; i++)
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84 | {
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85 | Element service = this.desc_doc.createElement(GSXML.SERVICE_ELEM);
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86 | service.setAttribute(GSXML.TYPE_ATT, GSXML.SERVICE_TYPE_RETRIEVE);
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87 | service.setAttribute(GSXML.NAME_ATT, services[i]);
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88 | this.short_service_info.appendChild(service);
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89 | }
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90 |
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91 | _GSDM = new GSDocumentModel(this.site_home, this.router);
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92 |
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93 | return true;
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94 | }
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95 |
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96 | protected Element getServiceDescription(Document doc, String service_id, String lang, String subset)
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97 | {
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98 | for (int i = 0; i < services.length; i++)
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99 | {
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100 | if (service_id.equals(services[i]))
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101 | {
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102 | Element service_elem = doc.createElement(GSXML.SERVICE_ELEM);
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103 | service_elem.setAttribute(GSXML.TYPE_ATT, GSXML.SERVICE_TYPE_RETRIEVE);
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104 | service_elem.setAttribute(GSXML.NAME_ATT, services[i]);
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105 | return service_elem;
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106 | }
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107 | }
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108 |
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109 | return null;
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110 | }
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111 |
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112 | /************
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113 | * Services *
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114 | ***********/
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115 |
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116 | protected Element processDocXMLCreateEmptyFile(Element request)
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117 | {
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118 | Document result_doc = XMLConverter.newDOM();
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119 | Element result = GSXML.createBasicResponse(result_doc, DOC_XML_CREATE_EMPTY_FILE);
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120 |
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121 | if (request == null)
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122 | {
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123 | GSXML.addError(result, DOC_XML_CREATE_EMPTY_FILE + ": Request is null", GSXML.ERROR_TYPE_SYNTAX);
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124 | return result;
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125 | }
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126 |
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127 | UserContext userContext = new UserContext(request);
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128 |
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129 | //Go through each of the document items that are requested
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130 | NodeList docList = request.getElementsByTagName(GSXML.DOCUMENT_ELEM);
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131 | for (int i = 0; i < docList.getLength(); i++)
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132 | {
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133 | Element currentDoc = (Element) docList.item(i);
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134 | String oid = currentDoc.getAttribute(GSXML.NODE_ID_ATT);
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135 | String collection = currentDoc.getAttribute(GSXML.COLLECTION_ATT);
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136 |
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137 | _GSDM.documentXMLCreateDocXML(oid, collection, userContext);
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138 | if(_GSDM.checkError(result, DOC_XML_CREATE_EMPTY_FILE))
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139 | {
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140 | return result;
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141 | }
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142 | }
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143 | return result;
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144 | }
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145 |
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146 | protected Element processDocXMLGetMetadata(Element request)
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147 | {
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148 | Document result_doc = XMLConverter.newDOM();
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149 | Element result = GSXML.createBasicResponse(result_doc, DOC_XML_GET_METADATA);
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150 |
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151 | if (request == null)
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152 | {
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153 | GSXML.addError(result, DOC_XML_GET_METADATA + ": Request is null", GSXML.ERROR_TYPE_SYNTAX);
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154 | return result;
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155 | }
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156 |
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157 | UserContext userContext = new UserContext(request);
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158 |
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159 | //Go through each of the metadata items that are requested
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160 | NodeList metadataList = request.getElementsByTagName(GSXML.METADATA_ELEM);
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161 | for (int i = 0; i < metadataList.getLength(); i++)
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162 | {
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163 | Element currentMetadata = (Element) metadataList.item(i);
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164 | String oid = currentMetadata.getAttribute(GSXML.NODE_ID_ATT);
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165 | String collection = currentMetadata.getAttribute(GSXML.COLLECTION_ATT);
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166 | String metadataName = currentMetadata.getAttribute(GSXML.NAME_ATT);
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167 |
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168 | ArrayList<Element> metadataValues = _GSDM.documentXMLGetMetadata(oid, collection, metadataName, userContext);
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169 | if(_GSDM.checkError(result, DOC_XML_GET_METADATA))
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170 | {
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171 | return result;
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172 | }
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173 |
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174 | for(Element metadataValue : metadataValues)
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175 | {
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176 | Element metadataElem = result_doc.createElement(GSXML.METADATA_ELEM);
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177 | metadataElem.setAttribute(GSXML.NAME_ATT, metadataName);
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178 | metadataElem.setAttribute(GSXML.VALUE_ATT, metadataValue.getFirstChild().getNodeValue());
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179 | result.appendChild(metadataElem);
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180 | }
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181 | }
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182 |
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183 | return result;
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184 | }
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185 |
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186 | protected Element processDocXMLSetMetadata(Element request)
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187 | {
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188 | Document result_doc = XMLConverter.newDOM();
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189 | Element result = GSXML.createBasicResponse(result_doc, DOC_XML_SET_METADATA);
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190 |
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191 | if (request == null)
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192 | {
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193 | GSXML.addError(result, DOC_XML_SET_METADATA + ": Request is null", GSXML.ERROR_TYPE_SYNTAX);
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194 | return result;
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195 | }
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196 |
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197 | UserContext userContext = new UserContext(request);
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198 |
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199 | //Go through each of the metadata items that are requested
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200 | NodeList metadataList = request.getElementsByTagName(GSXML.METADATA_ELEM);
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201 | for (int i = 0; i < metadataList.getLength(); i++)
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202 | {
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203 | Element currentMetadata = (Element) metadataList.item(i);
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204 | String oid = currentMetadata.getAttribute(GSXML.NODE_ID_ATT);
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205 | String collection = currentMetadata.getAttribute(GSXML.COLLECTION_ATT);
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206 | String metadataName = currentMetadata.getAttribute(GSXML.NAME_ATT);
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207 | String newMetadataValue = currentMetadata.getAttribute(GSXML.VALUE_ATT);
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208 |
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209 | //Optional values
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210 | String oldMetadataValue = currentMetadata.getAttribute("old" + GSXML.VALUE_ATT);
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211 | String position = currentMetadata.getAttribute("position"); //TODO: Replace "position" with a constant
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212 | String operation = currentMetadata.getAttribute("operation");
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213 |
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214 | int op = GSDocumentModel.OPERATION_APPEND;
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215 | if(operation.toLowerCase().equals("insertbefore"))
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216 | {
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217 | op = GSDocumentModel.OPERATION_INSERT_BEFORE;
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218 | }
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219 | else if (operation.toLowerCase().equals("insertafter"))
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220 | {
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221 | op = GSDocumentModel.OPERATION_INSERT_AFTER;
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222 | }
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223 | else if (operation.toLowerCase().equals("replace"))
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224 | {
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225 | op = GSDocumentModel.OPERATION_REPLACE;
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226 | }
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227 |
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228 | //If we are given a position then set the value at that position
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229 | if(position != null && !position.equals(""))
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230 | {
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231 | int pos = -1;
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232 | try
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233 | {
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234 | pos = Integer.parseInt(position);
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235 | }
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236 | catch(Exception ex)
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237 | {
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238 | GSXML.addError(result, DOC_XML_SET_METADATA + ": Error converting the position attribute to an integer", GSXML.ERROR_TYPE_SYNTAX);
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239 | return result;
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240 | }
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241 | _GSDM.documentXMLSetMetadata(oid, collection, metadataName, newMetadataValue, pos, op, userContext);
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242 | if(_GSDM.checkError(result, DOC_XML_SET_METADATA))
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243 | {
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244 | return result;
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245 | }
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246 | }
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247 | //If we are given a value to replace with then call the replacement method
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248 | else if (oldMetadataValue != null && !oldMetadataValue.equals(""))
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249 | {
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250 | _GSDM.documentXMLReplaceMetadata(oid, collection, metadataName, oldMetadataValue, newMetadataValue, userContext);
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251 | if(_GSDM.checkError(result, DOC_XML_SET_METADATA))
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252 | {
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253 | return result;
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254 | }
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255 | }
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256 | else
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257 | {
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258 | GSXML.addError(result, DOC_XML_SET_METADATA + ": A position or previous value was not given", GSXML.ERROR_TYPE_SYNTAX);
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259 | return result;
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260 | }
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261 | }
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262 |
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263 | return result;
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264 | }
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265 |
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266 | protected Element processDocXMLCreateSection(Element request)
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267 | {
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268 | Document result_doc = XMLConverter.newDOM();
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269 | Element result = GSXML.createBasicResponse(result_doc, DOC_XML_CREATE_SECTION);
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270 |
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271 | if (request == null)
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272 | {
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273 | GSXML.addError(result, DOC_XML_CREATE_SECTION + ": Request is null", GSXML.ERROR_TYPE_SYNTAX);
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274 | return result;
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275 | }
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276 |
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277 | UserContext userContext = new UserContext(request);
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278 |
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279 | //Go through each of the requests
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280 | NodeList sectionList = request.getElementsByTagName(GSXML.DOCXML_SECTION_ELEM); //TODO: Replace "Section" with a constant
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281 | for (int i = 0; i < sectionList.getLength(); i++)
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282 | {
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283 | Element currentSection = (Element) sectionList.item(i);
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284 | String oid = currentSection.getAttribute(GSXML.NODE_ID_ATT);
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285 | String collection = currentSection.getAttribute(GSXML.COLLECTION_ATT);
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286 |
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287 | _GSDM.documentXMLCreateSection(oid, collection, userContext);
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288 | if(_GSDM.checkError(result, DOC_XML_CREATE_SECTION))
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289 | {
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290 | return result;
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291 | }
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292 | }
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293 | return result;
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294 | }
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295 |
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296 | protected Element processDocXMLDeleteSection(Element request)
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297 | {
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298 | Document result_doc = XMLConverter.newDOM();
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299 | Element result = GSXML.createBasicResponse(result_doc, DOC_XML_DELETE_SECTION);
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300 |
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301 | if (request == null)
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302 | {
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303 | GSXML.addError(result, DOC_XML_DELETE_SECTION + ": Request is null", GSXML.ERROR_TYPE_SYNTAX);
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304 | return result;
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305 | }
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306 |
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307 | UserContext userContext = new UserContext(request);
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308 |
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309 | //Go through each of the requests
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310 | NodeList sectionList = request.getElementsByTagName(GSXML.DOCXML_SECTION_ELEM);
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311 | for (int i = 0; i < sectionList.getLength(); i++)
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312 | {
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313 | Element currentSection = (Element) sectionList.item(i);
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314 | String oid = currentSection.getAttribute(GSXML.NODE_ID_ATT);
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315 | String collection = currentSection.getAttribute(GSXML.COLLECTION_ATT);
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316 |
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317 | _GSDM.documentXMLDeleteSection(oid, collection, userContext);
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318 | if(_GSDM.checkError(result, DOC_XML_DELETE_SECTION))
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319 | {
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320 | return result;
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321 | }
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322 | }
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323 | return result;
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324 | }
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325 |
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326 | protected Element processDocXMLGetSection(Element request)
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327 | {
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328 | Document result_doc = XMLConverter.newDOM();
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329 | Element result = GSXML.createBasicResponse(result_doc, DOC_XML_GET_SECTION);
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330 |
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331 | if (request == null)
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332 | {
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333 | GSXML.addError(result, DOC_XML_GET_SECTION + ": Request is null", GSXML.ERROR_TYPE_SYNTAX);
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334 | return result;
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335 | }
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336 |
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337 | UserContext userContext = new UserContext(request);
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338 |
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339 | //Go through each of the requests
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340 | NodeList sectionList = request.getElementsByTagName(GSXML.DOCXML_SECTION_ELEM);
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341 | for (int i = 0; i < sectionList.getLength(); i++)
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342 | {
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343 | Element currentSection = (Element) sectionList.item(i);
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344 | String oid = currentSection.getAttribute(GSXML.NODE_ID_ATT);
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345 | String collection = currentSection.getAttribute(GSXML.COLLECTION_ATT);
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346 |
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347 | _GSDM.documentXMLGetSection(oid, collection, userContext);
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348 | if(_GSDM.checkError(result, DOC_XML_GET_SECTION))
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349 | {
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350 | return result;
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351 | }
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352 | }
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353 | return result;
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354 | }
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355 |
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356 | protected Element processDocXMLSetSection(Element request)
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357 | {
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358 | Document result_doc = XMLConverter.newDOM();
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359 | Element result = GSXML.createBasicResponse(result_doc, DOC_XML_SET_SECTION);
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360 |
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361 | if (request == null)
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362 | {
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363 | GSXML.addError(result, DOC_XML_SET_SECTION + ": Request is null", GSXML.ERROR_TYPE_SYNTAX);
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364 | return result;
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365 | }
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366 |
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367 | UserContext userContext = new UserContext(request);
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368 |
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369 | //Go through each of the requests
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370 | NodeList sectionList = request.getElementsByTagName(GSXML.DOCXML_SECTION_ELEM);
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371 | for (int i = 0; i < sectionList.getLength(); i++)
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372 | {
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373 | Element currentSection = (Element) sectionList.item(i);
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374 | String oid = currentSection.getAttribute(GSXML.NODE_ID_ATT);
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375 | String collection = currentSection.getAttribute(GSXML.COLLECTION_ATT);
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376 | String operation = currentSection.getAttribute("operation");
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377 |
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378 | int op = GSDocumentModel.OPERATION_REPLACE;
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379 | if(operation.equals("insertbefore"))
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380 | {
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381 | op = GSDocumentModel.OPERATION_INSERT_BEFORE;
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382 | }
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383 | else if (operation.equals("insertafter"))
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384 | {
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385 | op = GSDocumentModel.OPERATION_INSERT_AFTER;
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386 | }
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387 | else if (operation.equals("append"))
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388 | {
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389 | op = GSDocumentModel.OPERATION_APPEND;
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390 | }
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391 |
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392 | _GSDM.documentXMLSetSection(oid, collection, currentSection, op, userContext);
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393 | if(_GSDM.checkError(result, DOC_XML_SET_SECTION))
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394 | {
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395 | return result;
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396 | }
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397 | }
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398 |
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399 | return result;
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400 | }
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401 |
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402 | protected Element processDocXMLGetText(Element request)
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403 | {
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404 | Document result_doc = XMLConverter.newDOM();
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405 | Element result = GSXML.createBasicResponse(result_doc, DOC_XML_GET_TEXT);
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406 |
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407 | if (request == null)
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408 | {
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409 | GSXML.addError(result, DOC_XML_GET_TEXT + ": Request is null", GSXML.ERROR_TYPE_SYNTAX);
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410 | return result;
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411 | }
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412 |
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413 | UserContext userContext = new UserContext(request);
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414 |
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415 | //Go through each of the requests
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416 | NodeList contentList = request.getElementsByTagName(GSXML.DOCXML_CONTENT_ELEM);
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417 | for (int i = 0; i < contentList.getLength(); i++)
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418 | {
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419 | Element currentContent = (Element) contentList.item(i);
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420 | String oid = currentContent.getAttribute(GSXML.NODE_ID_ATT);
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421 | String collection = currentContent.getAttribute(GSXML.COLLECTION_ATT);
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422 |
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423 | String content = _GSDM.documentXMLGetText(oid, collection, userContext);
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424 | if(_GSDM.checkError(result, DOC_XML_GET_TEXT))
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425 | {
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426 | return result;
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427 | }
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428 |
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429 | if (content == null)
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430 | {
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431 | result.appendChild(result_doc.createElement(GSXML.DOCXML_CONTENT_ELEM));
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432 | }
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433 | else
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434 | {
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435 | Element contentElem = result_doc.createElement(GSXML.DOCXML_CONTENT_ELEM);
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436 | Node textNode = result_doc.createTextNode(content);
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437 | contentElem.appendChild(textNode);
|
---|
438 | result.appendChild(contentElem);
|
---|
439 | }
|
---|
440 | }
|
---|
441 |
|
---|
442 | return result;
|
---|
443 | }
|
---|
444 |
|
---|
445 | protected Element processDocXMLSetText(Element request)
|
---|
446 | {
|
---|
447 | Document result_doc = XMLConverter.newDOM();
|
---|
448 | Element result = GSXML.createBasicResponse(result_doc, DOC_XML_SET_TEXT);
|
---|
449 |
|
---|
450 | if (request == null)
|
---|
451 | {
|
---|
452 | GSXML.addError(result, DOC_XML_SET_TEXT + ": Request is null", GSXML.ERROR_TYPE_SYNTAX);
|
---|
453 | return result;
|
---|
454 | }
|
---|
455 |
|
---|
456 | UserContext userContext = new UserContext(request);
|
---|
457 |
|
---|
458 | //Go through each of the requests
|
---|
459 | NodeList contentList = request.getElementsByTagName(GSXML.DOCXML_CONTENT_ELEM);
|
---|
460 | for (int i = 0; i < contentList.getLength(); i++)
|
---|
461 | {
|
---|
462 | Element currentContent = (Element) contentList.item(i);
|
---|
463 | String oid = currentContent.getAttribute(GSXML.NODE_ID_ATT);
|
---|
464 | String collection = currentContent.getAttribute(GSXML.COLLECTION_ATT);
|
---|
465 |
|
---|
466 | _GSDM.documentXMLSetText(oid, collection, currentContent, userContext);
|
---|
467 | if(_GSDM.checkError(result, DOC_XML_SET_TEXT))
|
---|
468 | {
|
---|
469 | return result;
|
---|
470 | }
|
---|
471 | }
|
---|
472 |
|
---|
473 | return result;
|
---|
474 | }
|
---|
475 | } |
---|