Mercurial > dive4elements > framework
annotate artifacts-common/src/main/java/de/intevation/artifacts/common/utils/XMLUtils.java @ 453:a2efc9d65a11 2.9.8
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author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Fri, 28 Dec 2012 13:32:32 +0100 |
parents | cdc8b7c64856 |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2010 by Intevation GmbH |
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3 * |
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4 * This program is free software under the LGPL (>=v2.1) |
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5 * Read the file LGPL.txt coming with the software for details |
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6 * or visit http://www.gnu.org/licenses/ if it does not exist. |
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7 */ |
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8 |
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9 package de.intevation.artifacts.common.utils; |
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10 |
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11 import java.util.List; |
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12 import java.util.ArrayList; |
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13 import java.util.Map; |
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14 import java.util.LinkedHashMap; |
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15 import java.util.zip.GZIPInputStream; |
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16 import java.util.zip.GZIPOutputStream; |
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17 |
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18 import java.io.ByteArrayInputStream; |
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19 import java.io.FileInputStream; |
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20 import java.io.BufferedInputStream; |
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21 import java.io.ByteArrayOutputStream; |
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22 import java.io.File; |
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23 import java.io.IOException; |
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24 import java.io.InputStream; |
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25 import java.io.OutputStream; |
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26 import java.io.StringWriter; |
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27 |
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28 import javax.xml.namespace.NamespaceContext; |
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29 import javax.xml.namespace.QName; |
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30 |
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31 import javax.xml.parsers.DocumentBuilderFactory; |
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32 import javax.xml.parsers.ParserConfigurationException; |
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33 |
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34 import javax.xml.transform.Transformer; |
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35 import javax.xml.transform.TransformerConfigurationException; |
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36 import javax.xml.transform.TransformerException; |
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37 import javax.xml.transform.TransformerFactory; |
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38 import javax.xml.transform.TransformerFactoryConfigurationError; |
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39 |
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40 import javax.xml.transform.dom.DOMSource; |
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41 |
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42 import javax.xml.transform.stream.StreamResult; |
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43 |
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44 import javax.xml.xpath.XPath; |
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45 import javax.xml.xpath.XPathConstants; |
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46 import javax.xml.xpath.XPathExpressionException; |
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47 import javax.xml.xpath.XPathFactory; |
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48 import javax.xml.xpath.XPathVariableResolver; |
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49 |
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50 import org.apache.log4j.Logger; |
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51 |
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52 import org.w3c.dom.Attr; |
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53 import org.w3c.dom.Document; |
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54 import org.w3c.dom.Element; |
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55 import org.w3c.dom.Node; |
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56 |
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57 import org.xml.sax.SAXException; |
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58 |
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59 /** |
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60 * Some helper functions to ease work with XML concering namespaces, XPATH |
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61 * and so on. |
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62 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a> |
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63 */ |
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64 public final class XMLUtils |
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65 { |
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66 /** W3C URL of XForms. */ |
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67 public static final String XFORM_URL = "http://www.w3.org/2002/xforms"; |
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68 |
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69 /** W3C prefix of XForms. */ |
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70 public static final String XFORM_PREFIX = "xform"; |
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71 |
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72 /** Logger for this class. */ |
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73 private static Logger logger = Logger.getLogger(XMLUtils.class); |
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74 |
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75 private XMLUtils() { |
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76 } |
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77 |
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78 /** |
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79 * Helper class to generate elements and attributes with |
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80 * namespaces. |
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81 */ |
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82 public static class ElementCreator |
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83 { |
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84 /** Owner document of the elements to be created. */ |
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85 protected Document document; |
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86 |
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87 /** Namespace to be used. */ |
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88 protected String ns; |
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89 |
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90 /** Prefix to be used. */ |
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91 protected String prefix; |
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92 |
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93 /** |
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94 * Constructor to create an element/attribute creator |
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95 * with a given namespace and namespace prefix using a |
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96 * given owner document. |
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97 * @param document The owning document |
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98 * @param ns The namespace |
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99 * @param prefix The namespace prefix |
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100 */ |
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101 public ElementCreator(Document document, String ns, String prefix) { |
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102 this.document = document; |
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103 this.ns = ns; |
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104 this.prefix = prefix; |
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105 } |
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106 |
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107 /** |
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108 * Creates a new element using the owning document with |
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109 * the this creators namespace and namespace prefix. |
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110 * @param name The name of the element |
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111 * @return The new element |
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112 */ |
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113 public Element create(String name) { |
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114 Element element = document.createElementNS(ns, name); |
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115 element.setPrefix(prefix); |
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116 return element; |
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117 } |
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118 |
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119 /** |
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120 * Adds a new attribute and its value to a given element. |
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121 * It does not set the namespace prefix. |
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122 * @param element The element to add the attribute to |
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123 * @param name The name of the attribute |
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124 * @param value The value of the attribute |
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125 */ |
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126 public void addAttr(Element element, String name, String value) { |
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127 addAttr(element, name, value, false); |
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128 } |
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129 |
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130 /** |
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131 * Adds a new attribute and its value to a given element. |
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132 * If the namespace prefix is used is decided by the 'addPrefix' flag. |
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133 * @param element The element to add the attribute to |
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134 * @param name The name of the attribute |
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135 * @param value The value of the attribute |
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136 * @param addPrefix If true the creators namespace prefix is |
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137 * set on the attribute. |
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138 */ |
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139 public void addAttr( |
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140 Element element, |
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141 String name, |
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142 String value, |
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143 boolean addPrefix |
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144 ) { |
202
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145 if (addPrefix) { |
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146 Attr attr = document.createAttributeNS(ns, name); |
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147 attr.setValue(value); |
102
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148 attr.setPrefix(prefix); |
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149 |
202
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150 element.setAttributeNode(attr); |
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151 } |
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152 else { |
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153 element.setAttribute(name, value); |
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154 } |
102
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155 } |
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156 } // class ElementCreator |
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157 |
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158 /** |
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159 * Creates a new XML document |
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160 * @return the new XML document ot null if something went wrong during |
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161 * creation. |
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162 */ |
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163 public static final Document newDocument() { |
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164 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); |
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165 factory.setNamespaceAware(true); |
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166 |
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167 try { |
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168 return factory.newDocumentBuilder().newDocument(); |
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169 } |
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170 catch (ParserConfigurationException pce) { |
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171 logger.error(pce.getLocalizedMessage(), pce); |
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172 } |
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173 return null; |
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174 } |
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175 |
335
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176 |
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177 /** |
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178 * Create xml/string representation of element (nested in otherwise empty |
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179 * document). |
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180 * @param element element to inspect in string. |
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181 * @return string with xml representation of element. |
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182 */ |
338
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183 public final static String toString(Node node) { |
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184 Document doc = newDocument(); |
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185 doc.appendChild(doc.importNode(node,true)); |
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186 return toString(doc); |
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187 } |
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188 |
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189 |
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190 /** |
102
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191 * Loads a XML document namespace aware from a file |
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192 * @param file The file to load. |
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193 * @return the XML document or null if something went wrong |
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194 * during loading. |
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195 */ |
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196 public static final Document parseDocument(File file) { |
147
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197 InputStream inputStream = null; |
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198 try { |
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199 inputStream = new BufferedInputStream(new FileInputStream(file)); |
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200 return parseDocument(inputStream); |
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201 } |
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202 catch (IOException ioe) { |
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203 logger.error(ioe.getLocalizedMessage(), ioe); |
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204 } |
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205 finally { |
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206 if (inputStream != null) { |
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207 try { inputStream.close(); } |
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208 catch (IOException ioe) {} |
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209 } |
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210 } |
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211 return null; |
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212 } |
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213 |
387
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214 /** |
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215 * Parses a String to a xml document. |
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216 * |
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217 * @param string The xml string |
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218 * @return the XML document or null if something went wrong. |
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219 */ |
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220 public static final Document parseDocument(String string) { |
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221 InputStream inputStream = new ByteArrayInputStream(string.getBytes()); |
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222 return parseDocument(inputStream); |
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223 } |
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224 |
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225 |
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226 public static final Document parseDocument(InputStream inputStream) { |
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227 return parseDocument(inputStream, Boolean.TRUE); |
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228 } |
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229 |
350
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230 public static final Document parseDocument( |
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231 InputStream inputStream, |
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232 Boolean namespaceAware |
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233 ) { |
102
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234 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); |
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235 |
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236 if (namespaceAware != null) { |
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237 factory.setNamespaceAware(namespaceAware.booleanValue()); |
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238 } |
102
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239 |
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240 try { |
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241 return factory.newDocumentBuilder().parse(inputStream); |
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242 } |
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243 catch (ParserConfigurationException pce) { |
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244 logger.error(pce.getLocalizedMessage(), pce); |
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245 } |
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246 catch (SAXException se) { |
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247 logger.error(se.getLocalizedMessage(), se); |
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248 } |
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249 catch (IOException ioe) { |
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250 logger.error(ioe.getLocalizedMessage(), ioe); |
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251 } |
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252 return null; |
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253 } |
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254 |
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255 /** |
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256 * Creates a new XPath without a namespace context. |
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257 * @return the new XPath. |
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258 */ |
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259 public static final XPath newXPath() { |
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260 return newXPath(null, null); |
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261 } |
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262 |
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263 /** |
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264 * Creates a new XPath with a given namespace context. |
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265 * @param namespaceContext The namespace context to be used or null |
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266 * if none should be used. |
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267 * @return The new XPath |
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268 */ |
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269 public static final XPath newXPath( |
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270 NamespaceContext namespaceContext, |
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271 XPathVariableResolver resolver) |
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272 { |
102
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273 XPathFactory factory = XPathFactory.newInstance(); |
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274 XPath xpath = factory.newXPath(); |
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275 if (namespaceContext != null) { |
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276 xpath.setNamespaceContext(namespaceContext); |
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277 } |
323
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278 |
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279 if (resolver != null) { |
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280 xpath.setXPathVariableResolver(resolver); |
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281 } |
102
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282 return xpath; |
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283 } |
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284 |
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285 /** |
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286 * Evaluates an XPath query on a given object and returns the result |
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287 * as a given type. No namespace context is used. |
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288 * @param root The object which is used as the root of the tree to |
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289 * be searched in. |
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290 * @param query The XPath query |
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291 * @param returnTyp The type of the result. |
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292 * @return The result of type 'returnTyp' or null if something |
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293 * went wrong during XPath evaluation. |
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294 */ |
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295 public static final Object xpath( |
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296 Object root, |
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297 String query, |
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298 QName returnTyp |
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299 ) { |
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300 return xpath(root, query, returnTyp, null); |
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301 } |
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302 |
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303 /** |
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304 * Evaluates an XPath query on a given object and returns the result |
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305 * as a string. A given namespace context is used. |
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306 * @param root The object which is used as the root of the tree to |
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307 * be searched in. |
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308 * @param query The XPath query |
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309 * @param namespaceContext The namespace context to be used or null |
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310 * if none should be used. |
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311 * @return The result of the query or null if something went wrong |
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312 * during XPath evaluation. |
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313 */ |
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314 public static final String xpathString( |
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315 Object root, String query, NamespaceContext namespaceContext |
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316 ) { |
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317 return (String)xpath( |
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318 root, query, XPathConstants.STRING, namespaceContext); |
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319 } |
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320 |
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321 /** |
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322 * Evaluates an XPath query on a given object and returns the result |
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323 * as a given type. Optionally a namespace context is used. |
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324 * @param root The object which is used as the root of the tree to |
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325 * be searched in. |
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326 * @param query The XPath query |
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327 * @param returnType The type of the result. |
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328 * @param namespaceContext The namespace context to be used or null |
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329 * if none should be used. |
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330 * @return The result of type 'returnTyp' or null if something |
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331 * went wrong during XPath evaluation. |
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332 */ |
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333 public static final Object xpath( |
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334 Object root, |
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335 String query, |
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336 QName returnType, |
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337 NamespaceContext namespaceContext |
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338 ) { |
323
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339 return xpath(root, query, returnType, namespaceContext, null); |
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340 } |
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341 |
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342 public static final Object xpath( |
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343 Object root, |
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344 String query, |
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345 QName returnType, |
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346 NamespaceContext namespaceContext, |
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347 Map<String, String> variables) |
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348 { |
102
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349 if (root == null) { |
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350 return null; |
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351 } |
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352 |
323
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353 XPathVariableResolver resolver = variables != null |
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354 ? new MapXPathVariableResolver(variables) |
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355 : null; |
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356 |
102
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357 try { |
323
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358 XPath xpath = newXPath(namespaceContext, resolver); |
102
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359 if (xpath != null) { |
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360 return xpath.evaluate(query, root, returnType); |
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361 } |
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362 } |
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363 catch (XPathExpressionException xpee) { |
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364 logger.error(xpee.getLocalizedMessage(), xpee); |
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365 } |
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366 |
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367 return null; |
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368 } |
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369 |
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370 /** |
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371 * Streams out an XML document to a given output stream. |
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372 * @param document The document to be streamed out. |
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373 * @param out The output stream to be used. |
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374 * @return true if operation succeeded else false. |
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375 */ |
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376 public static boolean toStream(Document document, OutputStream out) { |
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377 try { |
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378 Transformer transformer = |
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379 TransformerFactory.newInstance().newTransformer(); |
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380 DOMSource source = new DOMSource(document); |
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381 StreamResult result = new StreamResult(out); |
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382 transformer.transform(source, result); |
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383 return true; |
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384 } |
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385 catch (TransformerConfigurationException tce) { |
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386 logger.error(tce.getLocalizedMessage(), tce); |
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387 } |
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388 catch (TransformerFactoryConfigurationError tfce) { |
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389 logger.error(tfce.getLocalizedMessage(), tfce); |
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390 } |
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391 catch (TransformerException te) { |
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392 logger.error(te.getLocalizedMessage(), te); |
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393 } |
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394 |
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395 return false; |
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396 } |
135
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397 |
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398 public static String toString(Document document) { |
276
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399 try { |
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400 Transformer transformer = |
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401 TransformerFactory.newInstance().newTransformer(); |
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402 DOMSource source = new DOMSource(document); |
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403 StringWriter out = new StringWriter(); |
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404 StreamResult result = new StreamResult(out); |
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405 transformer.transform(source, result); |
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406 out.flush(); |
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407 return out.toString(); |
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408 } |
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409 catch (TransformerConfigurationException tce) { |
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410 logger.error(tce.getLocalizedMessage(), tce); |
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411 } |
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412 catch (TransformerFactoryConfigurationError tfce) { |
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413 logger.error(tfce.getLocalizedMessage(), tfce); |
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414 } |
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415 catch (TransformerException te) { |
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416 logger.error(te.getLocalizedMessage(), te); |
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417 } |
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418 |
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419 return null; |
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420 } |
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421 |
234
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422 public static byte [] toByteArray(Document document) { |
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423 return toByteArray(document, false); |
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424 } |
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425 |
135
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426 /** |
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427 * Transforms an XML document into a byte array. |
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428 * @param document The document to be streamed out. |
234
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429 * @param compress The document should be compressed, too. |
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430 * @return the byte array or null if operation failed or |
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431 * document is null. |
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432 */ |
234
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433 public static byte [] toByteArray(Document document, boolean compress) { |
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434 if (document != null) { |
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435 try { |
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436 ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
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437 OutputStream out = compress |
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438 ? new GZIPOutputStream(baos) |
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439 : baos; |
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440 boolean success = toStream(document, out); |
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441 out.flush(); |
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442 out.close(); |
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|
443 return success |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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444 ? baos.toByteArray() |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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445 : null; |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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446 } |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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447 catch (IOException ioe) { |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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448 logger.error(ioe); |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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449 } |
135
a48882c9e096
Added a convinience method to transform an document into a byte array.
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diff
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|
450 } |
234
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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451 return null; |
135
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Added a convinience method to transform an document into a byte array.
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diff
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|
452 } |
147
9a64e0c1c737
Added code to load user from database.
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453 |
9a64e0c1c737
Added code to load user from database.
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454 public static Document fromByteArray(byte [] data) { |
234
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455 return fromByteArray(data, false); |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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456 } |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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457 |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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458 public static Document fromByteArray(byte [] data, boolean decompress) { |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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459 if (data != null) { |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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460 InputStream in = new ByteArrayInputStream(data); |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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461 try { |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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462 if (decompress) { |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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463 in = new GZIPInputStream(in); |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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464 } |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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465 return parseDocument(in); |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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466 } |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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|
467 catch (IOException ioe) { |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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468 logger.error(ioe); |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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469 } |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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470 finally { |
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Added a boolean flag to XML byte serialisation to compress/decompress, too.
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471 try { |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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472 in.close(); |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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473 } |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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changeset
|
474 catch (IOException ioe) { |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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|
475 logger.error(ioe); |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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|
476 } |
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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|
477 } |
147
9a64e0c1c737
Added code to load user from database.
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|
478 } |
234
23d642319a0b
Added a boolean flag to XML byte serialisation to compress/decompress, too.
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479 return null; |
147
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Added code to load user from database.
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480 } |
381
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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changeset
|
481 |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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changeset
|
482 private static class BuildResult { |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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483 List<Node> children; |
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Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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484 Map<String, String> attributes; |
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Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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485 BuildResult() { |
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Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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486 children = new ArrayList<Node>(); |
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Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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487 attributes = new LinkedHashMap<String, String>(); |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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488 } |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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changeset
|
489 |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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490 void setAttributes(Element element) { |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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491 for (Map.Entry<String, String> entry: attributes.entrySet()) { |
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Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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492 element.setAttribute(entry.getKey(), entry.getValue()); |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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changeset
|
493 } |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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changeset
|
494 } |
384
823752e3d392
Fixed building XML documents from JSON strings.
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parents:
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diff
changeset
|
495 |
823752e3d392
Fixed building XML documents from JSON strings.
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parents:
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diff
changeset
|
496 void finish(Element element) { |
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Fixed building XML documents from JSON strings.
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|
497 setAttributes(element); |
823752e3d392
Fixed building XML documents from JSON strings.
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changeset
|
498 for (Node child: children) { |
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Fixed building XML documents from JSON strings.
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|
499 element.appendChild(child); |
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Fixed building XML documents from JSON strings.
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|
500 } |
823752e3d392
Fixed building XML documents from JSON strings.
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parents:
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diff
changeset
|
501 } |
823752e3d392
Fixed building XML documents from JSON strings.
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parents:
381
diff
changeset
|
502 |
381
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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changeset
|
503 void add(Node node) { |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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|
504 children.add(node); |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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changeset
|
505 } |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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parents:
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diff
changeset
|
506 |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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diff
changeset
|
507 void add(String key, Object value) { |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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changeset
|
508 attributes.put(key, value != null ? value.toString() : "null"); |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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changeset
|
509 } |
392
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
387
diff
changeset
|
510 |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
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diff
changeset
|
511 int numChildren() { |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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changeset
|
512 return children.size(); |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
387
diff
changeset
|
513 } |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
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diff
changeset
|
514 |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
387
diff
changeset
|
515 Node firstChild() { |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
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diff
changeset
|
516 return children.get(0); |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
387
diff
changeset
|
517 } |
381
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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diff
changeset
|
518 } // class BuildResult |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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parents:
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diff
changeset
|
519 |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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diff
changeset
|
520 private static BuildResult recursiveBuild( |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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diff
changeset
|
521 List list, |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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diff
changeset
|
522 Document document |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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diff
changeset
|
523 ) { |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff
changeset
|
524 BuildResult result = new BuildResult(); |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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diff
changeset
|
525 for (Object entry: list) { |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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diff
changeset
|
526 if (entry instanceof Map) { |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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diff
changeset
|
527 BuildResult subResult = recursiveBuild( |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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parents:
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diff
changeset
|
528 (Map<String, Object>)entry, document); |
392
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
387
diff
changeset
|
529 if (subResult.numChildren() == 1) { |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
387
diff
changeset
|
530 result.add(subResult.firstChild()); |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
531 } |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
387
diff
changeset
|
532 else { |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
387
diff
changeset
|
533 Element element = document.createElement("map"); |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
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diff
changeset
|
534 subResult.finish(element); |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
387
diff
changeset
|
535 result.add(element); |
cdc8b7c64856
JSON2XML: Remove extra <map></map> from the XML generated by JSON lists containing only
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parents:
387
diff
changeset
|
536 } |
381
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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parents:
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diff
changeset
|
537 } |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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parents:
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diff
changeset
|
538 else if (entry instanceof List) { |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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changeset
|
539 Element element = document.createElement("list"); |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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changeset
|
540 BuildResult subResult = recursiveBuild((List)entry, document); |
384
823752e3d392
Fixed building XML documents from JSON strings.
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parents:
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diff
changeset
|
541 subResult.finish(element); |
381
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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diff
changeset
|
542 result.add(element); |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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parents:
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diff
changeset
|
543 } |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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parents:
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diff
changeset
|
544 else { |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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parents:
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diff
changeset
|
545 Element element = document.createElement("entry"); |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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diff
changeset
|
546 element.setAttribute( |
bed51de8ae58
Added JSON parser from Artefact Server NG to bridge from JSON to XML speaking services.
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parents:
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diff
changeset
|
547 "value", |
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548 entry != null ? entry.toString() : "null"); |
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549 } |
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550 } |
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551 return result; |
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552 } |
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553 |
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554 private static BuildResult recursiveBuild( |
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555 Map<String, Object> map, |
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556 Document document |
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557 ) { |
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558 BuildResult result = new BuildResult(); |
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559 |
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560 List<Node> nodes = new ArrayList<Node>(); |
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561 for (Map.Entry<String, Object> entry: map.entrySet()) { |
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562 Object value = entry.getValue(); |
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563 if (value instanceof Map) { |
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564 Element element = document.createElement(entry.getKey()); |
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565 BuildResult subResult = recursiveBuild( |
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566 (Map<String, Object>)value, document); |
384
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567 subResult.finish(element); |
381
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568 result.add(element); |
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569 } |
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570 else if (value instanceof List) { |
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571 Element element = document.createElement(entry.getKey()); |
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572 BuildResult subResult = recursiveBuild((List)value, document); |
384
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573 subResult.finish(element); |
381
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574 result.add(element); |
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575 } |
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576 else { |
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577 result.add(entry.getKey(), value); |
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578 } |
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579 } |
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580 return result; |
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581 } |
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582 |
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583 public static Document jsonToXML(String input) { |
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584 Document document = newDocument(); |
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585 |
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586 if (document == null) { |
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587 return null; |
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588 } |
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589 |
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590 Map<String, Object> map; |
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591 try { |
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592 map = JSON.parse(input); |
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593 } |
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594 catch (IOException ioe) { |
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595 logger.error(ioe); |
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596 return null; |
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597 } |
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598 |
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599 BuildResult roots = recursiveBuild(map, document); |
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600 |
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601 int N = roots.children.size(); |
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602 |
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603 if (N == 1) { |
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604 document.appendChild(roots.children.get(0)); |
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605 } |
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606 else if (N > 1) { |
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607 Node root = document.createElement("root"); |
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608 for (int i = 0; i < N; ++i) { |
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609 root.appendChild(roots.children.get(i)); |
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610 } |
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611 document.appendChild(root); |
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612 } |
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613 |
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614 return document; |
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615 } |
102
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616 } |
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617 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |