1 | /*
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2 | * ArchiveIO.java
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3 | * Used to retrieve information about collection archives
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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.DBHelper;
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24 | import org.greenstone.gsdl3.util.DBInfo;
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25 | import org.greenstone.gsdl3.util.GSDocumentModel;
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26 | import org.greenstone.gsdl3.util.GSParams;
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27 | import org.greenstone.gsdl3.util.GSPath;
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28 | import org.greenstone.gsdl3.util.GSXML;
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29 | import org.greenstone.gsdl3.util.SimpleCollectionDatabase;
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30 | import org.greenstone.gsdl3.util.UserContext;
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31 |
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32 | import org.w3c.dom.Element;
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33 | import org.w3c.dom.NodeList;
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34 |
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35 | import org.apache.log4j.*;
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36 |
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37 | import java.io.File;
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38 | import java.io.Serializable;
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39 | import java.util.ArrayList;
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40 | import java.util.HashMap;
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41 | import java.util.Vector;
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42 |
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43 | public class ArchiveIO extends ServiceRack
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44 | {
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45 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.service.ArchiveIO.class.getName());
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46 | GSDocumentModel _GSDM = null;
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47 |
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48 | /********************************************************************
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49 | * The list of services the Archive retrieval service rack supports *
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50 | *******************************************************************/
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51 | protected static final String ARCHIVE_GET_DOCUMENT_FILE_PATH = "ArchiveGetDocumentFilePath";
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52 | protected static final String ARCHIVE_GET_ASSOCIATED_IMPORT_FILES = "ArchiveGetAssociatedImportFiles";
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53 | protected static final String ARCHIVE_GET_SOURCE_FILE_OID = "ArchiveGetSourceFileOID";
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54 | protected static final String ARCHIVE_CHECK_DOCUMENT_OR_SECTION_EXISTS = "ArchiveCheckDocumentOrSectionExists";
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55 | protected static final String ARCHIVE_WRITE_ENTRY_TO_DATABASE = "ArchiveWriteEntryToDatabase";
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56 | protected static final String ARCHIVE_REMOVE_ENTRY_FROM_DATABASE = "ArchiveRemoveEntryFromDatabase";
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57 | /*******************************************************************/
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58 |
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59 | String[] _services = { ARCHIVE_GET_DOCUMENT_FILE_PATH, ARCHIVE_GET_ASSOCIATED_IMPORT_FILES, ARCHIVE_GET_SOURCE_FILE_OID, ARCHIVE_CHECK_DOCUMENT_OR_SECTION_EXISTS, ARCHIVE_WRITE_ENTRY_TO_DATABASE, ARCHIVE_REMOVE_ENTRY_FROM_DATABASE };
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60 |
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61 | /** configure this service */
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62 | public boolean configure(Element info, Element extra_info)
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63 | {
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64 | if (!super.configure(info, extra_info))
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65 | {
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66 | return false;
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67 | }
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68 |
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69 | logger.info("Configuring DocXMLUtil...");
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70 | this.config_info = info;
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71 |
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72 | for (int i = 0; i < _services.length; i++)
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73 | {
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74 | Element service = this.doc.createElement(GSXML.SERVICE_ELEM);
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75 | service.setAttribute(GSXML.TYPE_ATT, GSXML.SERVICE_TYPE_RETRIEVE);
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76 | service.setAttribute(GSXML.NAME_ATT, _services[i]);
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77 | this.short_service_info.appendChild(service);
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78 | }
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79 |
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80 | _GSDM = new GSDocumentModel(this.site_home, this.doc, this.router);
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81 |
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82 | return true;
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83 | }
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84 |
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85 | protected Element getServiceDescription(String service_id, String lang, String subset)
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86 | {
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87 | for (int i = 0; i < _services.length; i++)
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88 | {
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89 | if (service_id.equals(_services[i]))
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90 | {
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91 | Element service_elem = this.doc.createElement(GSXML.SERVICE_ELEM);
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92 | service_elem.setAttribute(GSXML.TYPE_ATT, GSXML.SERVICE_TYPE_RETRIEVE);
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93 | service_elem.setAttribute(GSXML.NAME_ATT, _services[i]);
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94 | return service_elem;
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95 | }
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96 | }
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97 |
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98 | return null;
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99 | }
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100 |
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101 | /************
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102 | * Services *
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103 | ***********/
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104 |
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105 | protected Element processArchiveGetDocumentFilePath(Element request)
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106 | {
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107 | // Create a new (empty) result message
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108 | Element result = this.doc.createElement(GSXML.RESPONSE_ELEM);
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109 | result.setAttribute(GSXML.FROM_ATT, ARCHIVE_GET_DOCUMENT_FILE_PATH);
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110 | result.setAttribute(GSXML.TYPE_ATT, GSXML.REQUEST_TYPE_PROCESS);
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111 |
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112 | UserContext userContext = new UserContext(request);
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113 |
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114 | // Get the parameters of the request
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115 | Element param_list = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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116 | if (param_list == null)
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117 | {
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118 | GSXML.addError(this.doc, result, ARCHIVE_GET_DOCUMENT_FILE_PATH + ": Missing " + GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER, GSXML.ERROR_TYPE_SYNTAX);
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119 | return result;
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120 | }
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121 | HashMap<String, Serializable> params = GSXML.extractParams(param_list, false);
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122 |
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123 | String oid = (String) params.get(GSXML.NODE_ID_ATT);
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124 | String collection = (String) params.get(GSXML.COLLECTION_ATT);
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125 |
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126 | String filePath = _GSDM.archiveGetDocumentFilePath(oid, collection, userContext);
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127 |
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128 | Element metadataList = this.doc.createElement(GSXML.METADATA_ELEM + GSXML.LIST_MODIFIER);
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129 | metadataList.appendChild(GSXML.createMetadataElement(this.doc, "docfilepath", filePath)); //TODO: Replace "docfilepath" with a constant
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130 | result.appendChild(metadataList);
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131 |
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132 | return result;
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133 | }
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134 |
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135 | protected Element processArchiveGetSourceFileOID(Element request)
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136 | {
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137 | //Create a new (empty) result message
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138 | Element result = this.doc.createElement(GSXML.RESPONSE_ELEM);
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139 | result.setAttribute(GSXML.FROM_ATT, ARCHIVE_GET_SOURCE_FILE_OID);
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140 | result.setAttribute(GSXML.TYPE_ATT, GSXML.REQUEST_TYPE_PROCESS);
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141 |
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142 | UserContext userContext = new UserContext(request);
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143 |
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144 | // Get the parameters of the request
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145 | Element param_list = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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146 | if (param_list == null)
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147 | {
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148 | GSXML.addError(this.doc, result, ARCHIVE_GET_SOURCE_FILE_OID + ": Missing " + GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER, GSXML.ERROR_TYPE_SYNTAX);
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149 | return result;
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150 | }
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151 | HashMap<String, Serializable> params = GSXML.extractParams(param_list, false);
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152 |
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153 | String srcFile = (String) params.get("sourcefile"); //TODO: Replace with a constant
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154 | String collection = (String) params.get(GSXML.COLLECTION_ATT);
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155 |
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156 | String oid = _GSDM.archiveGetSourceFileOID(srcFile, collection, userContext);
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157 | if(_GSDM.checkError(result, ARCHIVE_GET_SOURCE_FILE_OID))
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158 | {
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159 | return result;
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160 | }
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161 |
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162 | Element metadataList = this.doc.createElement(GSXML.METADATA_ELEM + GSXML.LIST_MODIFIER);
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163 | metadataList.appendChild(GSXML.createMetadataElement(this.doc, GSXML.NODE_ID_ATT, oid));
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164 | result.appendChild(metadataList);
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165 |
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166 | return result;
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167 | }
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168 |
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169 | protected Element processArchiveCheckDocumentOrSectionExists(Element request)
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170 | {
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171 | //Create a new (empty) result message
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172 | Element result = this.doc.createElement(GSXML.RESPONSE_ELEM);
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173 | result.setAttribute(GSXML.FROM_ATT, ARCHIVE_CHECK_DOCUMENT_OR_SECTION_EXISTS);
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174 | result.setAttribute(GSXML.TYPE_ATT, GSXML.REQUEST_TYPE_PROCESS);
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175 |
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176 | UserContext userContext = new UserContext(request);
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177 |
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178 | // Get the parameters of the request
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179 | Element param_list = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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180 | if (param_list == null)
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181 | {
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182 | GSXML.addError(this.doc, result, ARCHIVE_CHECK_DOCUMENT_OR_SECTION_EXISTS + ": Missing " + GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER, GSXML.ERROR_TYPE_SYNTAX);
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183 | return result;
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184 | }
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185 | HashMap<String, Serializable> params = GSXML.extractParams(param_list, false);
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186 |
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187 | String oid = (String) params.get(GSXML.NODE_ID_ATT);
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188 | String collection = (String) params.get(GSXML.COLLECTION_ATT);
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189 |
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190 | boolean exists = _GSDM.archiveCheckDocumentOrSectionExists(oid, collection, userContext);
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191 | if(_GSDM.checkError(result, ARCHIVE_CHECK_DOCUMENT_OR_SECTION_EXISTS))
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192 | {
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193 | return result;
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194 | }
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195 |
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196 | result.setAttribute("check", exists ? "true" : "false");
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197 |
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198 | return result;
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199 | }
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200 |
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201 | protected Element processArchiveWriteEntryToDatabase(Element request)
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202 | {
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203 | //Create a new (empty) result message
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204 | Element result = this.doc.createElement(GSXML.RESPONSE_ELEM);
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205 | result.setAttribute(GSXML.FROM_ATT, ARCHIVE_WRITE_ENTRY_TO_DATABASE);
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206 | result.setAttribute(GSXML.TYPE_ATT, GSXML.REQUEST_TYPE_PROCESS);
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207 |
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208 | UserContext userContext = new UserContext(request);
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209 |
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210 | // Get the parameters of the request
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211 | Element param_list = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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212 | if (param_list == null)
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213 | {
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214 | GSXML.addError(this.doc, result, ARCHIVE_WRITE_ENTRY_TO_DATABASE + ": Missing " + GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER, GSXML.ERROR_TYPE_SYNTAX);
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215 | return result;
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216 | }
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217 |
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218 | HashMap<String, ArrayList<String>> info = new HashMap<String, ArrayList<String>>();
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219 | String collection = null;
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220 | String oid = null;
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221 |
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222 | NodeList params = param_list.getElementsByTagName(GSXML.PARAM_ELEM);
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223 | for (int i = 0; i < params.getLength(); i++)
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224 | {
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225 | Element currentParam = (Element) params.item(i);
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226 | String type = currentParam.getAttribute(GSXML.TYPE_ATT);
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227 | String name = currentParam.getAttribute(GSXML.NAME_ATT);
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228 | String value = currentParam.getAttribute(GSXML.VALUE_ATT);
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229 | if (type != null && type.equals("entry"))
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230 | {
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231 | if(info.get(name) != null)
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232 | {
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233 | info.get(name).add(value);
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234 | }
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235 | else
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236 | {
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237 | ArrayList<String> values = new ArrayList<String>();
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238 | values.add(value);
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239 | info.put(name, values);
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240 | }
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241 | }
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242 | else
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243 | {
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244 | if (name.equals(GSXML.COLLECTION_ATT))
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245 | {
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246 | collection = value;
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247 | }
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248 | else if (name.equals(GSXML.NODE_ID_ATT))
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249 | {
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250 | oid = value;
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251 | }
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252 | }
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253 | }
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254 |
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255 | _GSDM.archiveWriteEntryToDatabase(oid, collection, info, userContext);
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256 | _GSDM.checkError(result, ARCHIVE_WRITE_ENTRY_TO_DATABASE);
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257 |
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258 | return result;
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259 | }
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260 |
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261 | protected Element processArchiveRemoveEntryFromDatabase(Element request)
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262 | {
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263 | //Create a new (empty) result message
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264 | Element result = this.doc.createElement(GSXML.RESPONSE_ELEM);
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265 | result.setAttribute(GSXML.FROM_ATT, ARCHIVE_REMOVE_ENTRY_FROM_DATABASE);
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266 | result.setAttribute(GSXML.TYPE_ATT, GSXML.REQUEST_TYPE_PROCESS);
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267 |
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268 | UserContext userContext = new UserContext(request);
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269 |
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270 | // Get the parameters of the request
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271 | Element param_list = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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272 | if (param_list == null)
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273 | {
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274 | GSXML.addError(this.doc, result, ARCHIVE_REMOVE_ENTRY_FROM_DATABASE + ": Missing " + GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER, GSXML.ERROR_TYPE_SYNTAX);
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275 | return result;
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276 | }
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277 |
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278 | String collection = null;
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279 | String oid = null;
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280 |
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281 | NodeList params = param_list.getElementsByTagName(GSXML.PARAM_ELEM);
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282 | for (int i = 0; i < params.getLength(); i++)
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283 | {
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284 | Element currentParam = (Element) params.item(i);
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285 | String name = currentParam.getAttribute(GSXML.NAME_ATT);
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286 | String value = currentParam.getAttribute(GSXML.VALUE_ATT);
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287 |
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288 | if (name.equals(GSXML.COLLECTION_ATT))
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289 | {
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290 | collection = value;
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291 | }
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292 | else if (name.equals(GSXML.NODE_ID_ATT))
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293 | {
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294 | oid = value;
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295 | }
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296 | }
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297 |
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298 | _GSDM.archiveRemoveEntryFromDatabase(oid, collection, userContext);
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299 | _GSDM.checkError(result, ARCHIVE_REMOVE_ENTRY_FROM_DATABASE);
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300 |
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301 | return result;
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302 | }
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303 |
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304 | protected Element processArchiveGetAssociatedImportFiles(Element request)
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305 | {
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306 | //Create a new (empty) result message
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307 | Element result = this.doc.createElement(GSXML.RESPONSE_ELEM);
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308 | result.setAttribute(GSXML.FROM_ATT, ARCHIVE_GET_ASSOCIATED_IMPORT_FILES);
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309 | result.setAttribute(GSXML.TYPE_ATT, GSXML.REQUEST_TYPE_PROCESS);
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310 |
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311 | UserContext userContext = new UserContext(request);
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312 |
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313 | // Get the parameters of the request
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314 | Element param_list = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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315 | if (param_list == null)
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316 | {
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317 | GSXML.addError(this.doc, result, ARCHIVE_GET_ASSOCIATED_IMPORT_FILES + ": Missing " + GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER, GSXML.ERROR_TYPE_SYNTAX);
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318 | return result;
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319 | }
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320 | HashMap<String, Serializable> params = GSXML.extractParams(param_list, false);
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321 |
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322 | String oid = (String) params.get(GSXML.NODE_ID_ATT);
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323 | String collection = (String) params.get(GSXML.COLLECTION_ATT);
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324 |
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325 | ArrayList<String> assocFiles = _GSDM.archiveGetAssociatedImportFiles(oid, collection, userContext);
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326 | if(_GSDM.checkError(result, ARCHIVE_GET_ASSOCIATED_IMPORT_FILES))
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327 | {
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328 | return result;
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329 | }
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330 |
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331 | Element metadataList = this.doc.createElement(GSXML.METADATA_ELEM + GSXML.LIST_MODIFIER);
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332 | metadataList.appendChild(GSXML.createMetadataElement(this.doc, "srcfile", assocFiles.get(0)));
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333 |
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334 | for (int i = 1; i < assocFiles.size(); i++)
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335 | {
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336 | metadataList.appendChild(GSXML.createMetadataElement(this.doc, "assocfile", assocFiles.get(i)));
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337 | }
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338 |
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339 | result.appendChild(metadataList);
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340 |
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341 | return result;
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342 | }
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343 | } |
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