1 | /*
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2 | * GSXML.java
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3 | * Copyright (C) 2008 New Zealand Digital Library, http://www.nzdl.org
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4 | *
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5 | * This program is free software; you can redistribute it and/or modify
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6 | * it under the terms of the GNU General Public License as published by
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7 | * the Free Software Foundation; either version 2 of the License, or
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8 | * (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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18 | */
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19 | package org.greenstone.gsdl3.util;
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20 |
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21 | import org.w3c.dom.NamedNodeMap;
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22 | import org.w3c.dom.Node;
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23 | import org.w3c.dom.Element;
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24 | import org.w3c.dom.NodeList;
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25 | import org.w3c.dom.Document;
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26 | import org.w3c.dom.Text;
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27 |
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28 |
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29 | import javax.xml.transform.TransformerFactory;
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30 | import javax.xml.transform.Transformer;
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31 | import java.io.StringWriter;
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32 | import javax.xml.transform.stream.StreamResult;
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33 | import javax.xml.transform.dom.DOMSource;
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34 |
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35 | import java.util.Map;
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36 | import java.util.Set;
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37 | import java.util.HashMap;
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38 | import java.util.Vector;
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39 | import java.util.Iterator;
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40 | import java.util.ArrayList;
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41 |
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42 | //import java.util.Locale;
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43 |
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44 | import org.apache.log4j.*;
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45 |
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46 | /** various functions for extracting info out of GS XML */
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47 | public class GSXML {
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48 |
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49 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.util.GSXML.class.getName());
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50 |
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51 | // greenstone xml elements
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52 | public static final String MESSAGE_ELEM = "message";
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53 | public static final String REQUEST_ELEM = "request";
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54 | public static final String RESPONSE_ELEM = "response";
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55 | public static final String COLLECTION_ELEM = "collection";
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56 | public static final String SERVICE_ELEM = "service";
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57 | public static final String CLUSTER_ELEM = "serviceCluster";
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58 | public static final String SITE_ELEM = "site";
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59 | public static final String PARAM_ELEM = "param";
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60 | public static final String PARAM_OPTION_ELEM = "option";
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61 | public static final String CONTENT_ELEM = "content";
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62 | public static final String RESOURCE_ELEM = "resource";
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63 | public static final String DOCUMENT_ELEM = "document";
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64 | public static final String METADATA_ELEM = "metadata";
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65 | public static final String SERVICE_CLASS_ELEM = "serviceRack";
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66 | public static final String CLASSIFIER_ELEM = "classifier";
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67 | public static final String APPLET_ELEM = "applet";
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68 | public static final String APPLET_DATA_ELEM = "appletData";
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69 | public static final String CONFIGURE_ELEM = "configure";
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70 | public static final String STATUS_ELEM = "status";
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71 | public static final String ERROR_ELEM = "error";
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72 | public static final String DEFAULT_ELEM = "default";
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73 | public static final String STYLESHEET_ELEM = "format";//"stylesheet"; // any additional stylesheet stuff is carried in the message inside this elem
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74 | public static final String FORMAT_ELEM = "format"; // config files use format - should we use this instead of stylesheet??
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75 | public static final String TERM_ELEM = "term";
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76 | public static final String SYSTEM_ELEM = "system";
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77 |
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78 | //config file elems
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79 | public static final String COLLECTION_CONFIG_ELEM = "collectionConfig";
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80 | public static final String COLLECTION_BUILD_ELEM = "buildConfig";
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81 | public static final String COLLECTION_INIT_ELEM = "collectionInit";
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82 | public static final String RECOGNISE_ELEM = "recognise";
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83 | public static final String DOC_TYPE_ELEM = "docType";
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84 | public static final String SEARCH_ELEM = "search";
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85 | public static final String INDEX_ELEM = "index";
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86 | public static final String INDEX_STEM_ELEM = "indexStem";
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87 | public static final String INDEX_OPTION_ELEM = "indexOption";
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88 | public static final String BROWSE_ELEM = "browse";
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89 | public static final String DISPLAY_ELEM = "display";
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90 | public static final String LEVEL_ELEM = "level";
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91 |
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92 | public static final String DBINFO_ELEM = "dbInfo";
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93 | public static final String DBNAME_ATT = "dbname";
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94 | public static final String DBPATH_ATT = "dbpath";
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95 | public static final String SQLSTATE_ATT = "sqlstate";
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96 | public static final String DATABASE_TYPE_ELEM = "databaseType";
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97 | public static final String SHORTNAME_ATT = "shortname";
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98 | public static final String NOTIFY_ELEM = "notify";
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99 | public static final String NOTIFY_HOST_ATT = "host";
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100 |
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101 |
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102 |
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103 | // elems for the pages to be processed by xslt
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104 | public final static String PAGE_ELEM = "page";
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105 | public final static String CONFIGURATION_ELEM = "config";
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106 | public final static String PAGE_REQUEST_ELEM = "pageRequest";
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107 | public final static String PAGE_RESPONSE_ELEM = "pageResponse";
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108 | public final static String PAGE_EXTRA_ELEM = "pageExtra";
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109 |
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110 | //public final static String DESCRIPTION_ELEM = "description";
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111 |
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112 | public static final String ACTION_ELEM = "action";
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113 | public static final String SUBACTION_ELEM = "subaction";
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114 |
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115 | // add on to another elem type to get a list of that type
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116 | public static final String LIST_MODIFIER = "List";
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117 |
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118 | // greenstone xml attributes
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119 | public static final String NAME_ATT = "name";
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120 | public static final String TO_ATT = "to";
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121 | public static final String USER_ID_ATT = "uid";
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122 | public static final String FROM_ATT = "from";
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123 | public static final String LANG_ATT = "lang";
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124 | public static final String TYPE_ATT = "type";
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125 | public static final String VALUE_ATT = "value";
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126 | public static final String DEFAULT_ATT = "default";
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127 | public static final String INFO_ATT = "info";
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128 | public static final String ACTION_ATT = "action";
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129 | public static final String SUBACTION_ATT = "subaction";
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130 | public static final String OUTPUT_ATT = "output";
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131 | public static final String ADDRESS_ATT = "address";
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132 | public static final String LOCAL_SITE_ATT = "localSite";
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133 | public static final String LOCAL_SITE_NAME_ATT = "localSiteName";
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134 | public static final String STATUS_ERROR_CODE_ATT = "code";
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135 | public static final String STATUS_PROCESS_ID_ATT = "pid";
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136 | public static final String PARAM_SHORTNAME_ATT = "shortname";
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137 | public static final String PARAM_IGNORE_POS_ATT = "ignore";
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138 | public static final String CLASSIFIER_CONTENT_ATT = "content";
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139 | public static final String ERROR_TYPE_ATT = "type";
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140 | public static final String COLLECT_TYPE_ATT = "ct";
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141 | public static final String HIDDEN_ATT = "hidden";
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142 |
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143 | // document stuff
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144 | public static final String DOC_TYPE_ATT = "docType";
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145 | public static final String DOC_NODE_ELEM = "documentNode";
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146 | public static final String NODE_CONTENT_ELEM = "nodeContent";
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147 | public static final String NODE_STRUCTURE_ELEM = "nodeStructure";
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148 | public static final String NODE_ID_ATT = "nodeID";
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149 | public static final String NODE_NAME_ATT = "nodeName";
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150 | public static final String NODE_TYPE_ATT = "nodeType";
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151 | public static final String NODE_RANK_ATT = "rank";
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152 | public static final String NODE_TYPE_ROOT = "root";
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153 | public static final String NODE_TYPE_INTERNAL = "internal";
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154 | public static final String NODE_TYPE_LEAF = "leaf";
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155 |
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156 | public static final String DOC_TYPE_SIMPLE = "simple";
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157 | public static final String DOC_TYPE_PAGED = "paged";
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158 | public static final String DOC_TYPE_HIERARCHY = "hierarchy";
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159 |
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160 | public static final String SESSION_EXPIRATION = "session_expiration";
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161 | public static final String USER_SESSION_CACHE_ATT = "user_session_cache";
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162 |
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163 | // classifier stuff
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164 | public static final String CLASS_NODE_ELEM = "classifierNode";
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165 | public static final String CLASS_NODE_ORIENTATION_ATT = "orientation";
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166 |
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167 | // parameter types
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168 | public static final String PARAM_TYPE_INTEGER = "integer";
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169 | public static final String PARAM_TYPE_BOOLEAN = "boolean";
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170 | public static final String PARAM_TYPE_ENUM_START = "enum";
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171 | public static final String PARAM_TYPE_ENUM_SINGLE = "enum_single";
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172 | public static final String PARAM_TYPE_ENUM_MULTI = "enum_multi";
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173 | public static final String PARAM_TYPE_STRING = "string";
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174 | public static final String PARAM_TYPE_TEXT = "text";
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175 | public static final String PARAM_TYPE_MULTI = "multi";
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176 | public static final String PARAM_TYPE_FILE = "file";
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177 | public static final String PARAM_TYPE_INVISIBLE = "invisible";
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178 | // stuff for text strings
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179 | public static final String DISPLAY_TEXT_ELEM = "displayItem";
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180 | // the following are used for the name attributes
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181 | public static final String DISPLAY_TEXT_NAME = "name";
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182 | public static final String DISPLAY_TEXT_SUBMIT = "submit";
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183 | public static final String DISPLAY_TEXT_DESCRIPTION = "description";
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184 |
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185 | // request types
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186 | // get the module description
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187 | public static final String REQUEST_TYPE_DESCRIBE = "describe";
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188 | // startup a process
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189 | public static final String REQUEST_TYPE_PROCESS = "process";
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190 | // get the status of an ongoing process
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191 | public static final String REQUEST_TYPE_STATUS = "status";
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192 | // system type request - eg reload a collection
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193 | public static final String REQUEST_TYPE_SYSTEM = "system";
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194 | // page requests to the Receptionist/Actions
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195 | public static final String REQUEST_TYPE_PAGE = "page"; // used to be cgi
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196 | // get any format info for a service
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197 | public static final String REQUEST_TYPE_FORMAT = "format";
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198 | // modify the requests
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199 | public static final String REQUEST_TYPE_MESSAGING = "messaging";
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200 |
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201 | // service types
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202 | public static final String SERVICE_TYPE_QUERY = "query";
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203 | public static final String SERVICE_TYPE_RETRIEVE = "retrieve";
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204 | public static final String SERVICE_TYPE_BROWSE = "browse";
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205 | public static final String SERVICE_TYPE_APPLET = "applet";
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206 | public static final String SERVICE_TYPE_PROCESS = "process";
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207 | public static final String SERVICE_TYPE_ENRICH = "enrich";
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208 | public static final String SERVICE_TYPE_OAI = "oai";
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209 | public static final String FLAX_PAGE = "flaxPage";
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210 | public static final String FLAX_PAGE_GENERATION = "FlaxPageGeneration";
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211 |
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212 | // system command types and attributes
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213 | public static final String SYSTEM_TYPE_CONFIGURE = "configure";
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214 | public static final String SYSTEM_TYPE_ACTIVATE = "activate";
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215 | public static final String SYSTEM_TYPE_DEACTIVATE = "deactivate";
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216 |
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217 | public static final String SYSTEM_SUBSET_ATT = "subset";
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218 | public static final String SYSTEM_MODULE_TYPE_ATT = "moduleType";
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219 | public static final String SYSTEM_MODULE_NAME_ATT = "moduleName";
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220 |
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221 | // communicator types
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222 | public static final String COMM_TYPE_SOAP_JAVA = "soap";
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223 |
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224 | // error types
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225 | public static final String ERROR_TYPE_SYNTAX = "syntax";
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226 | public static final String ERROR_TYPE_SYSTEM = "system";
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227 | public static final String ERROR_TYPE_INVALID_ID = "invalid_id";
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228 | public static final String ERROR_TYPE_OTHER = "other";
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229 |
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230 | // some system wide param names
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231 | public static final String SUBSET_PARAM = "subset";
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232 |
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233 | //for plugin
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234 | public static final String PLUGIN_ELEM = "plugin";
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235 | public static final String IMPORT_ELEM = "import";
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236 |
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237 | //for authentication
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238 | public static final String AUTHEN_NODE_ELEM="authenticationNode";
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239 | public static final String USER_NODE_ELEM="userNode";
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240 |
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241 | //for configure action results
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242 | public static final String SUCCESS = "success";
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243 | public static final String ERROR = "error";
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244 |
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245 | /** takes a list of elements, and returns an array of strings
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246 | * of the values of attribute att_name */
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247 | public static String [] getAttributeValuesFromList(Element list,
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248 | String att_name) {
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249 |
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250 | NodeList children = list.getChildNodes();
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251 |
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252 | int num_nodes = children.getLength();
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253 | String []ids = new String[num_nodes];
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254 | for (int i=0; i<num_nodes; i++) {
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255 | Element e = (Element)children.item(i);
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256 | String id = e.getAttribute(att_name);
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257 | ids[i] = id;
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258 | }
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259 |
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260 | return ids;
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261 | }
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262 |
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263 | /** takes a paramList element, and gets a HashMap of name-value pairs
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264 | * if deep=true, extracts embedded params, otherwise just top level
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265 | * params*/
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266 | public static HashMap extractParams(Element xml, boolean deep) {
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267 |
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268 | if (!xml.getNodeName().equals(PARAM_ELEM+LIST_MODIFIER)) {
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269 | logger.error("paramList element should have been passed to extractParams, instead it was "+xml.getNodeName());
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270 | return null;
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271 | }
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272 |
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273 | NodeList params = null;
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274 | if (deep) { // get all the nested ones
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275 | params = xml.getElementsByTagName(PARAM_ELEM);
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276 | } else { // just get the top level ones
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277 | params = xml.getChildNodes();
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278 | }
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279 | HashMap param_map = new HashMap();
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280 | for (int i=0; i<params.getLength(); i++) {
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281 | if (params.item(i).getNodeName().equals(PARAM_ELEM)) {
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282 | Element param = (Element)params.item(i);
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283 | String name=param.getAttribute(NAME_ATT);
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284 | String value=getValue(param); //att or content
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285 | int pos = name.indexOf('.');
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286 | if (pos == -1) { // a base param
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287 | param_map.put(name, value);
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288 | } else { // a namespaced param
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289 |
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290 | String namespace = name.substring(0, pos);
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291 | name = name.substring(pos+1);
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292 | HashMap map = (HashMap)param_map.get(namespace);
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293 | if (map == null) {
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294 | map = new HashMap();
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295 | param_map.put(namespace, map);
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296 | }
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297 | map.put(name, value);
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298 | }
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299 | }
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300 | }
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301 | return param_map;
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302 | }
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303 |
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304 | /** gets the value att or the text content */
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305 | public static String getValue(Element e) {
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306 | String val = e.getAttribute(VALUE_ATT);
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307 | if (val ==null || val.equals("")) {
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308 | // have to get it out of the text
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309 | val=getNodeText(e);
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310 |
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311 | } else {
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312 | // unescape the xml stuff
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313 | val = unXmlSafe(val);
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314 | }
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315 | return val;
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316 | }
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317 |
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318 | /** extracts the text out of a node */
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319 | public static Node getNodeTextNode(Element param) {
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320 | param.normalize();
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321 | Node n = param.getFirstChild();
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322 | while (n!=null && n.getNodeType() !=Node.TEXT_NODE) {
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323 | n=n.getNextSibling();
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324 | }
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325 | return n;
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326 | }
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327 |
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328 | /** extracts the text out of a node */
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329 | public static String getNodeText(Element param) {
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330 | Node text_node = getNodeTextNode(param);
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331 | if (text_node == null) {
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332 | return "";
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333 | }
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334 | return text_node.getNodeValue();
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335 | }
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336 |
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337 | public static void setNodeText(Element elem, String text) {
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338 | Node old_text_node = getNodeTextNode(elem);
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339 | if (old_text_node != null) {
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340 | elem.removeChild(old_text_node);
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341 | }
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342 | Text t = elem.getOwnerDocument().createTextNode(text);
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343 | elem.appendChild(t);
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344 | }
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345 |
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346 | /** add text to a document/subsection element */
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347 | public static boolean addDocText(Document owner, Element doc, String text) {
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348 |
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349 | Element content = owner.createElement(NODE_CONTENT_ELEM);
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350 | Text t = owner.createTextNode(text);
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351 | content.appendChild(t);
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352 | doc.appendChild(content);
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353 | return true;
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354 | }
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355 |
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356 | /** add an error message, unknown error type */
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357 | public static boolean addError(Document owner, Element doc, String text) {
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358 | return addError(owner, doc, text, ERROR_TYPE_OTHER);
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359 | }
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360 | /** add an error message */
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361 | public static boolean addError(Document owner, Element doc, String text,
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362 | String error_type) {
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363 |
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364 | Element content = owner.createElement(ERROR_ELEM);
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365 | content.setAttribute(ERROR_TYPE_ATT, error_type);
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366 | Text t = owner.createTextNode(text);
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367 | content.appendChild(t);
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368 | doc.appendChild(content);
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369 | return true;
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370 | }
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371 |
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372 | /** add an error message */
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373 | public static boolean addError(Document owner, Element doc, Throwable error) {
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374 | return addError(owner, doc, error, ERROR_TYPE_OTHER);
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375 | }
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376 |
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377 | /** add an error message */
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378 | public static boolean addError(Document owner, Element doc,
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379 | Throwable error, String error_type) {
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380 | error.printStackTrace();
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381 | return addError(owner, doc, error.toString(), error_type);
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382 | }
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383 |
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384 | public static Element createMetadataParamList(Document owner, Vector meta_values) {
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385 |
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386 | Element meta_param_list = owner.createElement(PARAM_ELEM+LIST_MODIFIER);
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387 | Iterator i = meta_values.iterator();
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388 | while(i.hasNext()) {
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389 | String next = (String)i.next();
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390 | Element meta_param = owner.createElement(PARAM_ELEM);
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391 | meta_param_list.appendChild(meta_param);
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392 | meta_param.setAttribute(NAME_ATT, "metadata");
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393 | meta_param.setAttribute(VALUE_ATT, next);
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394 | }
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395 | return meta_param_list;
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396 | }
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397 |
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398 | /** adds a metadata elem to a list */
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399 | public static boolean addMetadata(Document owner, Element list,
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400 | String meta_name, String meta_value) {
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401 | if (meta_value==null || meta_value.equals("")) {
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402 | return false;
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403 | }
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404 | Element data = owner.createElement(METADATA_ELEM);
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405 | data.setAttribute(NAME_ATT, meta_name);
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406 | Text t = owner.createTextNode(meta_value);
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407 | data.appendChild(t);
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408 | list.appendChild(data);
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409 | return true;
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410 |
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411 | }
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412 |
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413 | /** copies the metadata out of teh metadataList of 'from' into
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414 | * the metadataList of 'to' */
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415 | public static boolean mergeMetadataLists(Node to, Node from) {
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---|
416 | Node to_meta = getChildByTagName(to, METADATA_ELEM+LIST_MODIFIER);
|
---|
417 | Node from_meta = getChildByTagName(from, METADATA_ELEM+LIST_MODIFIER);
|
---|
418 |
|
---|
419 | if (from_meta == null) { // nothing to copy
|
---|
420 | return true;
|
---|
421 | }
|
---|
422 | Document to_owner = to.getOwnerDocument();
|
---|
423 | Node new_from = to_owner.importNode(from_meta, true);
|
---|
424 |
|
---|
425 | if (to_meta == null) { // just copy the whole list
|
---|
426 | to.appendChild(new_from);
|
---|
427 | return true;
|
---|
428 | }
|
---|
429 |
|
---|
430 | // copy individual elements
|
---|
431 | Node child = new_from.getFirstChild();
|
---|
432 | while ( child != null) {
|
---|
433 | to_meta.appendChild(child);
|
---|
434 | child = child.getNextSibling();
|
---|
435 | }
|
---|
436 | return true;
|
---|
437 | }
|
---|
438 |
|
---|
439 | /** copies all the children from from to to */
|
---|
440 | public static boolean mergeElements(Element to, Element from) {
|
---|
441 |
|
---|
442 | Document owner = to.getOwnerDocument();
|
---|
443 | Node child = from.getFirstChild();
|
---|
444 | while (child != null) {
|
---|
445 | to.appendChild(owner.importNode(child, true));
|
---|
446 | child = child.getNextSibling();
|
---|
447 | }
|
---|
448 | return true;
|
---|
449 | }
|
---|
450 | /** returns the (first) element child of the node n */
|
---|
451 | public static Element getFirstElementChild(Node n) {
|
---|
452 |
|
---|
453 | Node child = n.getFirstChild();
|
---|
454 | while (child!=null) {
|
---|
455 | if (child.getNodeType() == Node.ELEMENT_NODE) {
|
---|
456 | return (Element)child;
|
---|
457 | }
|
---|
458 | child = child.getNextSibling();
|
---|
459 | }
|
---|
460 | return null; //no element child found
|
---|
461 | }
|
---|
462 | /** returns the (first) child element with the given name */
|
---|
463 | public static Node getChildByTagName(Node n, String name) {
|
---|
464 | if(n != null) { // this line is an attempted solution to the NullPointerException mentioned
|
---|
465 | // in trac bug ticket #225. If n is null can't do n.getFirstChild() below. As per bug #225:
|
---|
466 | // GSXML.getNodeByPath() is called by GS2BrowseAction, which then calls this method.
|
---|
467 | // If n is null, null will be returned which GS2BrowseAction already checks for. It's here
|
---|
468 | // that the NullPointerException was thrown.
|
---|
469 |
|
---|
470 | Node child = n.getFirstChild();
|
---|
471 | while (child!=null) {
|
---|
472 | if (child.getNodeName().equals(name)) {
|
---|
473 | return child;
|
---|
474 | }
|
---|
475 | child = child.getNextSibling();
|
---|
476 | }
|
---|
477 | }
|
---|
478 | return null; //not found
|
---|
479 | }
|
---|
480 |
|
---|
481 | /** returns the (nth) child element with the given name
|
---|
482 | * index numbers start at 0 */
|
---|
483 | public static Node getChildByTagNameIndexed(Node n, String name, int index) {
|
---|
484 | if (index == -1) {
|
---|
485 | return getChildByTagName(n, name);
|
---|
486 | }
|
---|
487 | int count = 0;
|
---|
488 | Node child = n.getFirstChild();
|
---|
489 | while (child!=null) {
|
---|
490 | if (child.getNodeName().equals(name)) {
|
---|
491 | if (count == index) {
|
---|
492 | return child;
|
---|
493 | } else {
|
---|
494 | count++;
|
---|
495 | }
|
---|
496 | }
|
---|
497 | child = child.getNextSibling();
|
---|
498 | }
|
---|
499 | return null; //not found
|
---|
500 | }
|
---|
501 |
|
---|
502 | /** takes an xpath type expression of the form name/name/...
|
---|
503 | * and returns the first node that matches, or null if not found */
|
---|
504 | public static Node getNodeByPath(Node n, String path) {
|
---|
505 |
|
---|
506 | String link = GSPath.getFirstLink(path);
|
---|
507 | path = GSPath.removeFirstLink(path);
|
---|
508 | while (!link.equals("")) {
|
---|
509 | n = getChildByTagName(n, link);
|
---|
510 | if (n==null) {
|
---|
511 | return null;
|
---|
512 | }
|
---|
513 | link = GSPath.getFirstLink(path);
|
---|
514 | path = GSPath.removeFirstLink(path);
|
---|
515 | }
|
---|
516 | return n;
|
---|
517 | }
|
---|
518 |
|
---|
519 | /** takes an xpath type expression of the form name/name/...
|
---|
520 | * and returns the first node that matches, or null if not found
|
---|
521 | * can include [i] indices. index numbers start at 0 */
|
---|
522 | public static Node getNodeByPathIndexed(Node n, String path) {
|
---|
523 |
|
---|
524 | String link = GSPath.getFirstLink(path);
|
---|
525 | int index = GSPath.getIndex(link);
|
---|
526 | if (index != -1) {
|
---|
527 | link = GSPath.removeIndex(link);
|
---|
528 | }
|
---|
529 | path = GSPath.removeFirstLink(path);
|
---|
530 | while (!link.equals("")) {
|
---|
531 | n = getChildByTagNameIndexed(n, link, index);
|
---|
532 | if (n==null) {
|
---|
533 | return null;
|
---|
534 | }
|
---|
535 | link = GSPath.getFirstLink(path);
|
---|
536 | index = GSPath.getIndex(link);
|
---|
537 | if (index != -1) {
|
---|
538 | link = GSPath.removeIndex(link);
|
---|
539 | }
|
---|
540 | path = GSPath.removeFirstLink(path);
|
---|
541 | }
|
---|
542 | return n;
|
---|
543 | }
|
---|
544 |
|
---|
545 | public static HashMap getChildrenMap(Node n) {
|
---|
546 |
|
---|
547 | HashMap map= new HashMap();
|
---|
548 | Node child = n.getFirstChild();
|
---|
549 | while (child!=null) {
|
---|
550 | String name = child.getNodeName();
|
---|
551 | map.put(name, child);
|
---|
552 | child = child.getNextSibling();
|
---|
553 | }
|
---|
554 | return map;
|
---|
555 | }
|
---|
556 |
|
---|
557 | public static NodeList getChildrenByTagName(Node n, String name) {
|
---|
558 | MyNodeList node_list = new MyNodeList();
|
---|
559 | Node child = n.getFirstChild();
|
---|
560 | while (child!=null) {
|
---|
561 | if (child.getNodeName().equals(name)) {
|
---|
562 | node_list.addNode(child);
|
---|
563 | }
|
---|
564 | child = child.getNextSibling();
|
---|
565 | }
|
---|
566 | return node_list;
|
---|
567 | }
|
---|
568 |
|
---|
569 |
|
---|
570 | /** Duplicates an element, but gives it a new name */
|
---|
571 | public static Element duplicateWithNewName(Document owner, Element element,
|
---|
572 | String element_name, boolean with_attributes) {
|
---|
573 | return duplicateWithNewNameNS(owner, element, element_name, null, with_attributes);
|
---|
574 | }
|
---|
575 |
|
---|
576 | /** Duplicates an element, but gives it a new name */
|
---|
577 | public static Element duplicateWithNewNameNS(Document owner,
|
---|
578 | Element element,
|
---|
579 | String element_name,
|
---|
580 | String namespace_uri,
|
---|
581 | boolean with_attributes) {
|
---|
582 | Element duplicate;
|
---|
583 | if (namespace_uri == null) {
|
---|
584 | duplicate = owner.createElement(element_name);
|
---|
585 | } else {
|
---|
586 | duplicate = owner.createElementNS(namespace_uri, element_name);
|
---|
587 | }
|
---|
588 | // Copy element attributes
|
---|
589 | if (with_attributes) {
|
---|
590 | NamedNodeMap attributes = element.getAttributes();
|
---|
591 | for (int i = 0; i < attributes.getLength(); i++) {
|
---|
592 | Node attribute = attributes.item(i);
|
---|
593 | duplicate.setAttribute(attribute.getNodeName(), attribute.getNodeValue());
|
---|
594 | }
|
---|
595 | }
|
---|
596 |
|
---|
597 | // Copy element children
|
---|
598 | NodeList children = element.getChildNodes();
|
---|
599 | for (int i = 0; i < children.getLength(); i++) {
|
---|
600 | Node child = children.item(i);
|
---|
601 | duplicate.appendChild(owner.importNode(child, true));
|
---|
602 | }
|
---|
603 |
|
---|
604 | return duplicate;
|
---|
605 | }
|
---|
606 |
|
---|
607 | public static void copyAllChildren(Element to, Element from) {
|
---|
608 |
|
---|
609 | Document to_doc = to.getOwnerDocument();
|
---|
610 | Node child = from.getFirstChild();
|
---|
611 | while (child != null) {
|
---|
612 | to.appendChild(to_doc.importNode(child, true));
|
---|
613 | child = child.getNextSibling();
|
---|
614 | }
|
---|
615 | }
|
---|
616 | /** returns a basic request message */
|
---|
617 | public static Element createBasicRequest(Document owner,
|
---|
618 | String request_type, String to,
|
---|
619 | String lang,
|
---|
620 | String uid) {
|
---|
621 | Element request = owner.createElement(REQUEST_ELEM);
|
---|
622 | request.setAttribute(TYPE_ATT, request_type);
|
---|
623 | request.setAttribute(LANG_ATT, lang);
|
---|
624 | request.setAttribute(TO_ATT, to);
|
---|
625 | request.setAttribute(USER_ID_ATT, uid);
|
---|
626 | return request;
|
---|
627 | }
|
---|
628 |
|
---|
629 | public static Element createTextElement(Document owner, String elem_name,
|
---|
630 | String text) {
|
---|
631 | Element e = owner.createElement(elem_name);
|
---|
632 | Text t = owner.createTextNode(text);
|
---|
633 | e.appendChild(t);
|
---|
634 | return e;
|
---|
635 |
|
---|
636 | }
|
---|
637 |
|
---|
638 | public static Element createTextElement(Document owner, String elem_name,
|
---|
639 | String text, String att_name, String att_value) {
|
---|
640 | Element e = owner.createElement(elem_name);
|
---|
641 | e.setAttribute(att_name, att_value);
|
---|
642 | Text t = owner.createTextNode(text);
|
---|
643 | e.appendChild(t);
|
---|
644 | return e;
|
---|
645 |
|
---|
646 | }
|
---|
647 |
|
---|
648 | public static Element createDisplayTextElement(Document owner,
|
---|
649 | String text_name,
|
---|
650 | String text) {
|
---|
651 | Element e = owner.createElement(DISPLAY_TEXT_ELEM);
|
---|
652 | e.setAttribute(NAME_ATT, text_name);
|
---|
653 | Text t = owner.createTextNode(text);
|
---|
654 | e.appendChild(t);
|
---|
655 | return e;
|
---|
656 |
|
---|
657 | }
|
---|
658 |
|
---|
659 |
|
---|
660 | public static Element createParameter(Document owner, String name,
|
---|
661 | String value) {
|
---|
662 | Element param = owner.createElement(PARAM_ELEM);
|
---|
663 | param.setAttribute(NAME_ATT, name);
|
---|
664 | param.setAttribute(VALUE_ATT, value);
|
---|
665 | return param;
|
---|
666 | }
|
---|
667 |
|
---|
668 | public static void addParametersToList(Document owner, Element param_list,
|
---|
669 | HashMap params) {
|
---|
670 | Set items = params.entrySet();
|
---|
671 | Iterator i = items.iterator();
|
---|
672 | while(i.hasNext()) {
|
---|
673 | Map.Entry m = (Map.Entry)i.next();
|
---|
674 | param_list.appendChild(createParameter(owner, (String)m.getKey(), (String)m.getValue()));
|
---|
675 | }
|
---|
676 |
|
---|
677 | }
|
---|
678 |
|
---|
679 | public static Element createParameterDescription(Document owner,
|
---|
680 | String id,
|
---|
681 | String display_name,
|
---|
682 | String type,
|
---|
683 | String default_value,
|
---|
684 | String []option_ids,
|
---|
685 | String []option_names) {
|
---|
686 |
|
---|
687 |
|
---|
688 | Element p = owner.createElement(PARAM_ELEM);
|
---|
689 | p.setAttribute(NAME_ATT, id);
|
---|
690 | p.setAttribute(TYPE_ATT, type);
|
---|
691 | p.appendChild(createDisplayTextElement(owner, GSXML.DISPLAY_TEXT_NAME, display_name));
|
---|
692 |
|
---|
693 | if (default_value != null) {
|
---|
694 | p.setAttribute(DEFAULT_ATT, default_value);
|
---|
695 | }
|
---|
696 | if (option_ids!=null && option_names!=null) {
|
---|
697 | for (int i=0; i<option_ids.length; i++) {
|
---|
698 | Element e = owner.createElement(PARAM_OPTION_ELEM);
|
---|
699 | e.setAttribute(NAME_ATT, option_ids[i]);
|
---|
700 | e.appendChild(createDisplayTextElement(owner, GSXML.DISPLAY_TEXT_NAME, option_names[i]));
|
---|
701 | p.appendChild(e);
|
---|
702 | }
|
---|
703 | }
|
---|
704 | return p;
|
---|
705 | }
|
---|
706 | public static Element createParameterDescription2(Document owner,
|
---|
707 | String id,
|
---|
708 | String display_name,
|
---|
709 | String type,
|
---|
710 | String default_value,
|
---|
711 | ArrayList option_ids,
|
---|
712 | ArrayList option_names) {
|
---|
713 |
|
---|
714 |
|
---|
715 | Element p = owner.createElement(PARAM_ELEM);
|
---|
716 | p.setAttribute(NAME_ATT, id);
|
---|
717 | p.setAttribute(TYPE_ATT, type);
|
---|
718 | p.appendChild(createDisplayTextElement(owner, GSXML.DISPLAY_TEXT_NAME, display_name));
|
---|
719 | if (default_value != null) {
|
---|
720 | p.setAttribute(DEFAULT_ATT, default_value);
|
---|
721 | }
|
---|
722 | if (option_ids!=null && option_names!=null) {
|
---|
723 | for (int i=0; i<option_ids.size(); i++) {
|
---|
724 | Element e = owner.createElement(PARAM_OPTION_ELEM);
|
---|
725 | e.setAttribute(NAME_ATT, (String)option_ids.get(i));
|
---|
726 | e.appendChild(createDisplayTextElement(owner, GSXML.DISPLAY_TEXT_NAME, (String)option_names.get(i)));
|
---|
727 | p.appendChild(e);
|
---|
728 | }
|
---|
729 | }
|
---|
730 | return p;
|
---|
731 | }
|
---|
732 |
|
---|
733 |
|
---|
734 | /** returns the element parent/node_name[@attribute_name='attribute_value']
|
---|
735 | */
|
---|
736 | public static Element getNamedElement(Element parent, String node_name,
|
---|
737 | String attribute_name,
|
---|
738 | String attribute_value) {
|
---|
739 |
|
---|
740 | NodeList children = parent.getChildNodes();
|
---|
741 | for (int i=0; i<children.getLength(); i++) {
|
---|
742 | Node child = children.item(i);
|
---|
743 | if (child.getNodeName().equals(node_name)) {
|
---|
744 | if (((Element)child).getAttribute(attribute_name).equals(attribute_value))
|
---|
745 | return (Element)child;
|
---|
746 | }
|
---|
747 | }
|
---|
748 | // not found
|
---|
749 | return null;
|
---|
750 | }
|
---|
751 | /** returns a NodeList of elements: ancestor/node_name[@attribute_name='attribute_value']
|
---|
752 | */
|
---|
753 | public static NodeList getNamedElements(Element ancestor, String node_name, String attribute_name, String attribute_value) {
|
---|
754 | MyNodeList node_list = new MyNodeList();
|
---|
755 | NodeList children = ancestor.getElementsByTagName(node_name);
|
---|
756 |
|
---|
757 | if(children != null && children.getLength() > 0) {
|
---|
758 |
|
---|
759 | for (int i=0; i<children.getLength(); i++) {
|
---|
760 | Node child = children.item(i);
|
---|
761 | if (child.getNodeName().equals(node_name)) {
|
---|
762 | if (((Element)child).getAttribute(attribute_name).equals(attribute_value))
|
---|
763 | node_list.addNode(child);
|
---|
764 | }
|
---|
765 | }
|
---|
766 | }
|
---|
767 | return node_list;
|
---|
768 | }
|
---|
769 |
|
---|
770 | public static int SORT_TYPE_STRING = 0;
|
---|
771 | public static int SORT_TYPE_INT = 1;
|
---|
772 | public static int SORT_TYPE_FLOAT = 2;
|
---|
773 |
|
---|
774 | // sort type:
|
---|
775 | public static Element insertIntoOrderedList(Element parent_node,
|
---|
776 | String node_name,
|
---|
777 | Element start_from_elem,
|
---|
778 | Element new_elem, String sort_att,
|
---|
779 | boolean descending) {
|
---|
780 | if (new_elem == null) return null;
|
---|
781 | Element cloned_elem = (Element)parent_node.getOwnerDocument().importNode(new_elem, true);
|
---|
782 | if (start_from_elem == null) {
|
---|
783 | parent_node.appendChild(cloned_elem);
|
---|
784 | return cloned_elem;
|
---|
785 | }
|
---|
786 |
|
---|
787 | Node current_node = start_from_elem;
|
---|
788 | String insert_att = cloned_elem.getAttribute(sort_att);
|
---|
789 | String list_att = start_from_elem.getAttribute(sort_att);
|
---|
790 | while ((!descending && list_att.compareTo(insert_att)<0) || (descending && list_att.compareTo(insert_att)>0)) {
|
---|
791 | current_node = current_node.getNextSibling();
|
---|
792 | if (current_node == null) break; // end of the list
|
---|
793 | if (!current_node.getNodeName().equals(node_name)) {
|
---|
794 | continue; // not a valid node
|
---|
795 | }
|
---|
796 | list_att = ((Element)current_node).getAttribute(sort_att);
|
---|
797 | }
|
---|
798 |
|
---|
799 | parent_node.insertBefore(cloned_elem, current_node);
|
---|
800 | return cloned_elem;
|
---|
801 | }
|
---|
802 |
|
---|
803 |
|
---|
804 | /** Returns the appropriate language element from a display elem,
|
---|
805 | * display is the containing element, name is the name of the element to
|
---|
806 | * look for, lang is the preferred language, lang_default is the fall back
|
---|
807 | * lang if neither lang is found, will return the first one it finds*/
|
---|
808 | public static String getDisplayText(Element display, String name,
|
---|
809 | String lang, String lang_default) {
|
---|
810 |
|
---|
811 | String def = null;
|
---|
812 | String first = null;
|
---|
813 | NodeList elems = display.getElementsByTagName(DISPLAY_TEXT_ELEM);
|
---|
814 | if (elems.getLength() == 0) return "";
|
---|
815 | for (int i=0; i<elems.getLength(); i++) {
|
---|
816 | Element e = (Element)elems.item(i);
|
---|
817 | String n = e.getAttribute(NAME_ATT);
|
---|
818 | if (name.equals(n)) {
|
---|
819 | String l = e.getAttribute(LANG_ATT);
|
---|
820 | if (lang.equals(l)) {
|
---|
821 | return getNodeText(e);
|
---|
822 | } else if (lang_default.equals(l)) {
|
---|
823 | def = getNodeText(e);
|
---|
824 | } else if (first == null) {
|
---|
825 | first = getNodeText(e);
|
---|
826 | }
|
---|
827 | } else {
|
---|
828 | continue;
|
---|
829 | }
|
---|
830 | }
|
---|
831 |
|
---|
832 | if (def != null) {
|
---|
833 | return def;
|
---|
834 | }
|
---|
835 | if (first != null) {
|
---|
836 | return first;
|
---|
837 | }
|
---|
838 | return "";
|
---|
839 | }
|
---|
840 |
|
---|
841 | // replaces < > " ' & in the original with their entities
|
---|
842 | public static String xmlSafe(String original) {
|
---|
843 |
|
---|
844 | StringBuffer filtered = new StringBuffer(original.length());
|
---|
845 | char c;
|
---|
846 | for (int i=0; i<original.length(); i++) {
|
---|
847 | c = original.charAt(i);
|
---|
848 | if (c == '>') {
|
---|
849 | filtered.append(">");
|
---|
850 | } else if (c == '<') {
|
---|
851 | filtered.append("<");
|
---|
852 | } else if (c == '"') {
|
---|
853 | filtered.append(""");
|
---|
854 | } else if (c == '&') {
|
---|
855 | filtered.append("&");
|
---|
856 | } else if (c == '\'') {
|
---|
857 | filtered.append("'");
|
---|
858 | } else {
|
---|
859 | filtered.append(c);
|
---|
860 | }
|
---|
861 | }
|
---|
862 | return filtered.toString();
|
---|
863 | }
|
---|
864 |
|
---|
865 |
|
---|
866 | // replaces < > " ' & entities with their originals
|
---|
867 | public static String unXmlSafe(String original) {
|
---|
868 |
|
---|
869 | StringBuffer filtered = new StringBuffer(original.length());
|
---|
870 | char c;
|
---|
871 | for (int i=0; i<original.length(); i++) {
|
---|
872 | c = original.charAt(i);
|
---|
873 | if (c == '&') {
|
---|
874 | int pos = original.indexOf(";", i);
|
---|
875 | String entity = original.substring(i+1, pos);
|
---|
876 | if (entity.equals("gt")) {
|
---|
877 | filtered.append(">");
|
---|
878 | } else if (entity.equals("lt")) {
|
---|
879 | filtered.append("<");
|
---|
880 | } else if (entity.equals("apos")) {
|
---|
881 | filtered.append("'");
|
---|
882 | } else if (entity.equals("amp")) {
|
---|
883 | filtered.append("&");
|
---|
884 | } else if (entity.equals("quot")) {
|
---|
885 | filtered.append("\"");
|
---|
886 | } else {
|
---|
887 | filtered.append("&"+entity+";");
|
---|
888 | }
|
---|
889 | i = pos;
|
---|
890 | } else {
|
---|
891 | filtered.append(c);
|
---|
892 | }
|
---|
893 | }
|
---|
894 | return filtered.toString();
|
---|
895 | }
|
---|
896 |
|
---|
897 | public static void printXMLNode(Node e) {
|
---|
898 | printXMLNode(e, 0) ;
|
---|
899 | }
|
---|
900 |
|
---|
901 | public static String xmlNodeToString(Node e){
|
---|
902 | StringBuffer sb = new StringBuffer("");
|
---|
903 | xmlNodeToString(sb,e,0);
|
---|
904 | return sb.toString();
|
---|
905 | }
|
---|
906 |
|
---|
907 | private static void xmlNodeToString(StringBuffer sb, Node e, int depth){
|
---|
908 |
|
---|
909 | for (int i=0 ; i<depth ; i++)
|
---|
910 | sb.append(' ') ;
|
---|
911 |
|
---|
912 | if (e.getNodeType() == Node.TEXT_NODE){
|
---|
913 | sb.append("text") ;
|
---|
914 | return ;
|
---|
915 | }
|
---|
916 |
|
---|
917 | sb.append('<');
|
---|
918 | sb.append(e.getNodeName());
|
---|
919 | NamedNodeMap attrs = e.getAttributes();
|
---|
920 | for (int i = 0; i < attrs.getLength(); i++) {
|
---|
921 | Node attr = attrs.item(i);
|
---|
922 | sb.append(' ');
|
---|
923 | sb.append(attr.getNodeName());
|
---|
924 | sb.append("=\"");
|
---|
925 | sb.append(attr.getNodeValue());
|
---|
926 | sb.append('"');
|
---|
927 | }
|
---|
928 |
|
---|
929 | NodeList children = e.getChildNodes();
|
---|
930 |
|
---|
931 | if (children == null || children.getLength() == 0)
|
---|
932 | sb.append("/>\n") ;
|
---|
933 | else {
|
---|
934 |
|
---|
935 | sb.append(">\n") ;
|
---|
936 |
|
---|
937 | int len = children.getLength();
|
---|
938 | for (int i = 0; i < len; i++) {
|
---|
939 | xmlNodeToString(sb,children.item(i), depth + 1);
|
---|
940 | }
|
---|
941 |
|
---|
942 | for (int i=0 ; i<depth ; i++)
|
---|
943 | sb.append(' ') ;
|
---|
944 |
|
---|
945 | sb.append("</" + e.getNodeName() + ">\n");
|
---|
946 | }
|
---|
947 |
|
---|
948 |
|
---|
949 | }
|
---|
950 |
|
---|
951 | public static void printXMLNode(Node e, int depth) { //recursive method call using DOM API...
|
---|
952 |
|
---|
953 | for (int i=0 ; i<depth ; i++)
|
---|
954 | System.out.print(' ') ;
|
---|
955 |
|
---|
956 | if (e.getNodeType() == Node.TEXT_NODE){
|
---|
957 | // shouldn't we actually print the text here????
|
---|
958 | System.out.println("text") ;
|
---|
959 | return ;
|
---|
960 | }
|
---|
961 |
|
---|
962 | System.out.print('<');
|
---|
963 | System.out.print(e.getNodeName());
|
---|
964 | NamedNodeMap attrs = e.getAttributes();
|
---|
965 | for (int i = 0; i < attrs.getLength(); i++) {
|
---|
966 | Node attr = attrs.item(i);
|
---|
967 | System.out.print(' ');
|
---|
968 | System.out.print(attr.getNodeName());
|
---|
969 | System.out.print("=\"");
|
---|
970 | System.out.print(attr.getNodeValue());
|
---|
971 | System.out.print('"');
|
---|
972 | }
|
---|
973 |
|
---|
974 | NodeList children = e.getChildNodes();
|
---|
975 |
|
---|
976 | if (children == null || children.getLength() == 0)
|
---|
977 | System.out.println("/>") ;
|
---|
978 | else {
|
---|
979 |
|
---|
980 | System.out.println('>') ;
|
---|
981 |
|
---|
982 | int len = children.getLength();
|
---|
983 | for (int i = 0; i < len; i++) {
|
---|
984 | printXMLNode(children.item(i), depth + 1);
|
---|
985 | }
|
---|
986 |
|
---|
987 | for (int i=0 ; i<depth ; i++)
|
---|
988 | System.out.print(' ') ;
|
---|
989 |
|
---|
990 | System.out.println("</" + e.getNodeName() + ">");
|
---|
991 | }
|
---|
992 |
|
---|
993 | }
|
---|
994 |
|
---|
995 | public static void elementToLogAsString(Element e) {
|
---|
996 | try {
|
---|
997 | TransformerFactory tf = TransformerFactory.newInstance();
|
---|
998 | Transformer trans = tf.newTransformer();
|
---|
999 | StringWriter sw = new StringWriter();
|
---|
1000 | trans.transform(new DOMSource(e), new StreamResult(sw));
|
---|
1001 | System.err.println( sw.toString() );
|
---|
1002 | } catch( Exception ex ) {
|
---|
1003 | System.err.println( "couldn't write " + e + " to log" );
|
---|
1004 | }
|
---|
1005 |
|
---|
1006 | }
|
---|
1007 | }
|
---|