Mercurial > dive4elements > framework

annotate artifacts-common/src/main/java/de/intevation/artifacts/common/utils/XMLUtils.java @ 367:6431b7efe240

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Cosmetics. artifacts/trunk@3680 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Mon, 16 Jan 2012 08:58:36 +0000
parents ab743e750ac6
children bed51de8ae58
rev   line source
102
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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.Map;
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12 import java.util.zip.GZIPInputStream;
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13 import java.util.zip.GZIPOutputStream;
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14
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15 import java.io.ByteArrayInputStream;
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16 import java.io.FileInputStream;
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17 import java.io.BufferedInputStream;
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18 import java.io.ByteArrayOutputStream;
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19 import java.io.File;
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20 import java.io.IOException;
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21 import java.io.InputStream;
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22 import java.io.OutputStream;
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23 import java.io.StringWriter;
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24
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25 import javax.xml.namespace.NamespaceContext;
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26 import javax.xml.namespace.QName;
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27
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28 import javax.xml.parsers.DocumentBuilderFactory;
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29 import javax.xml.parsers.ParserConfigurationException;
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30
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31 import javax.xml.transform.Transformer;
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32 import javax.xml.transform.TransformerConfigurationException;
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33 import javax.xml.transform.TransformerException;
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34 import javax.xml.transform.TransformerFactory;
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35 import javax.xml.transform.TransformerFactoryConfigurationError;
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36
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37 import javax.xml.transform.dom.DOMSource;
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38
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39 import javax.xml.transform.stream.StreamResult;
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40
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41 import javax.xml.xpath.XPath;
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42 import javax.xml.xpath.XPathConstants;
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43 import javax.xml.xpath.XPathExpressionException;
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44 import javax.xml.xpath.XPathFactory;
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45 import javax.xml.xpath.XPathVariableResolver;
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46
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47 import org.apache.log4j.Logger;
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48
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49 import org.w3c.dom.Attr;
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50 import org.w3c.dom.Document;
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51 import org.w3c.dom.Element;
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52 import org.w3c.dom.Node;
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53
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54 import org.xml.sax.SAXException;
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55
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56 /**
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57 * Some helper functions to ease work with XML concering namespaces, XPATH
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58 * and so on.
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59 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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60 */
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61 public final class XMLUtils
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62 {
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63 /** W3C URL of XForms. */
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64 public static final String XFORM_URL = "http://www.w3.org/2002/xforms";
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65
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66 /** W3C prefix of XForms. */
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67 public static final String XFORM_PREFIX = "xform";
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68
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69 /** Logger for this class. */
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70 private static Logger logger = Logger.getLogger(XMLUtils.class);
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71
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72 private XMLUtils() {
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73 }
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74
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75 /**
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76 * Helper class to generate elements and attributes with
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77 * namespaces.
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78 */
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79 public static class ElementCreator
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80 {
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81 /** Owner document of the elements to be created. */
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82 protected Document document;
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83
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84 /** Namespace to be used. */
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85 protected String ns;
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86
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87 /** Prefix to be used. */
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88 protected String prefix;
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89
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90 /**
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91 * Constructor to create an element/attribute creator
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92 * with a given namespace and namespace prefix using a
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93 * given owner document.
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94 * @param document The owning document
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95 * @param ns The namespace
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96 * @param prefix The namespace prefix
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97 */
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98 public ElementCreator(Document document, String ns, String prefix) {
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99 this.document = document;
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100 this.ns = ns;
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101 this.prefix = prefix;
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102 }
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103
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104 /**
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105 * Creates a new element using the owning document with
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106 * the this creators namespace and namespace prefix.
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107 * @param name The name of the element
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108 * @return The new element
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109 */
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110 public Element create(String name) {
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111 Element element = document.createElementNS(ns, name);
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112 element.setPrefix(prefix);
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113 return element;
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114 }
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115
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116 /**
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117 * Adds a new attribute and its value to a given element.
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118 * It does not set the namespace prefix.
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119 * @param element The element to add the attribute to
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120 * @param name The name of the attribute
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121 * @param value The value of the attribute
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122 */
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123 public void addAttr(Element element, String name, String value) {
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124 addAttr(element, name, value, false);
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125 }
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126
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127 /**
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128 * Adds a new attribute and its value to a given element.
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129 * If the namespace prefix is used is decided by the 'addPrefix' flag.
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130 * @param element The element to add the attribute to
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131 * @param name The name of the attribute
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132 * @param value The value of the attribute
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133 * @param addPrefix If true the creators namespace prefix is
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134 * set on the attribute.
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135 */
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136 public void addAttr(
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137 Element element,
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138 String name,
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139 String value,
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140 boolean addPrefix
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141 ) {
202
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142 if (addPrefix) {
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143 Attr attr = document.createAttributeNS(ns, name);
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144 attr.setValue(value);
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145 attr.setPrefix(prefix);
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146
202
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147 element.setAttributeNode(attr);
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148 }
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149 else {
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150 element.setAttribute(name, value);
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151 }
102
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152 }
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153 } // class ElementCreator
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154
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155 /**
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156 * Creates a new XML document
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157 * @return the new XML document ot null if something went wrong during
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158 * creation.
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159 */
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160 public static final Document newDocument() {
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161 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
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162 factory.setNamespaceAware(true);
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163
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164 try {
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165 return factory.newDocumentBuilder().newDocument();
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166 }
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167 catch (ParserConfigurationException pce) {
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168 logger.error(pce.getLocalizedMessage(), pce);
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169 }
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170 return null;
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171 }
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172
335
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173
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174 /**
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175 * Create xml/string representation of element (nested in otherwise empty
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176 * document).
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177 * @param element element to inspect in string.
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178 * @return string with xml representation of element.
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179 */
338
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180 public final static String toString(Node node) {
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181 Document doc = newDocument();
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182 doc.appendChild(doc.importNode(node,true));
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183 return toString(doc);
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184 }
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185
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186
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187 /**
102
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188 * Loads a XML document namespace aware from a file
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189 * @param file The file to load.
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190 * @return the XML document or null if something went wrong
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191 * during loading.
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192 */
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193 public static final Document parseDocument(File file) {
147
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194 InputStream inputStream = null;
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195 try {
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196 inputStream = new BufferedInputStream(new FileInputStream(file));
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197 return parseDocument(inputStream);
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198 }
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199 catch (IOException ioe) {
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200 logger.error(ioe.getLocalizedMessage(), ioe);
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201 }
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202 finally {
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203 if (inputStream != null) {
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204 try { inputStream.close(); }
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205 catch (IOException ioe) {}
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206 }
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207 }
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208 return null;
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209 }
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210
349
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211
147
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212 public static final Document parseDocument(InputStream inputStream) {
350
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213 return parseDocument(inputStream, Boolean.TRUE);
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214 }
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215
350
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216 public static final Document parseDocument(
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217 InputStream inputStream,
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218 Boolean namespaceAware
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219 ) {
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220 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
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221
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222 if (namespaceAware != null) {
350
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223 factory.setNamespaceAware(namespaceAware.booleanValue());
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224 }
102
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225
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226 try {
147
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227 return factory.newDocumentBuilder().parse(inputStream);
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228 }
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229 catch (ParserConfigurationException pce) {
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230 logger.error(pce.getLocalizedMessage(), pce);
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231 }
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232 catch (SAXException se) {
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233 logger.error(se.getLocalizedMessage(), se);
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234 }
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235 catch (IOException ioe) {
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236 logger.error(ioe.getLocalizedMessage(), ioe);
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237 }
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238 return null;
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239 }
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240
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241 /**
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242 * Creates a new XPath without a namespace context.
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243 * @return the new XPath.
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244 */
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245 public static final XPath newXPath() {
323
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246 return newXPath(null, null);
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247 }
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248
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249 /**
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250 * Creates a new XPath with a given namespace context.
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251 * @param namespaceContext The namespace context to be used or null
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252 * if none should be used.
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253 * @return The new XPath
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254 */
323
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255 public static final XPath newXPath(
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256 NamespaceContext namespaceContext,
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257 XPathVariableResolver resolver)
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258 {
102
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259 XPathFactory factory = XPathFactory.newInstance();
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260 XPath xpath = factory.newXPath();
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261 if (namespaceContext != null) {
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262 xpath.setNamespaceContext(namespaceContext);
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263 }
323
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264
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265 if (resolver != null) {
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266 xpath.setXPathVariableResolver(resolver);
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267 }
102
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268 return xpath;
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269 }
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270
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271 /**
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272 * Evaluates an XPath query on a given object and returns the result
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273 * as a given type. No namespace context is used.
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274 * @param root The object which is used as the root of the tree to
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275 * be searched in.
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276 * @param query The XPath query
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277 * @param returnTyp The type of the result.
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278 * @return The result of type 'returnTyp' or null if something
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279 * went wrong during XPath evaluation.
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280 */
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281 public static final Object xpath(
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282 Object root,
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283 String query,
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284 QName returnTyp
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285 ) {
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286 return xpath(root, query, returnTyp, null);
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287 }
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288
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289 /**
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290 * Evaluates an XPath query on a given object and returns the result
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291 * as a string. A given namespace context is used.
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292 * @param root The object which is used as the root of the tree to
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293 * be searched in.
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294 * @param query The XPath query
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295 * @param namespaceContext The namespace context to be used or null
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296 * if none should be used.
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297 * @return The result of the query or null if something went wrong
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298 * during XPath evaluation.
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299 */
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300 public static final String xpathString(
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301 Object root, String query, NamespaceContext namespaceContext
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302 ) {
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303 return (String)xpath(
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304 root, query, XPathConstants.STRING, namespaceContext);
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305 }
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306
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307 /**
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308 * Evaluates an XPath query on a given object and returns the result
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309 * as a given type. Optionally a namespace context is used.
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310 * @param root The object which is used as the root of the tree to
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311 * be searched in.
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312 * @param query The XPath query
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313 * @param returnType The type of the result.
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314 * @param namespaceContext The namespace context to be used or null
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315 * if none should be used.
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316 * @return The result of type 'returnTyp' or null if something
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317 * went wrong during XPath evaluation.
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318 */
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319 public static final Object xpath(
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320 Object root,
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321 String query,
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322 QName returnType,
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323 NamespaceContext namespaceContext
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324 ) {
323
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325 return xpath(root, query, returnType, namespaceContext, null);
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326 }
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327
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328 public static final Object xpath(
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329 Object root,
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330 String query,
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331 QName returnType,
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332 NamespaceContext namespaceContext,
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333 Map<String, String> variables)
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334 {
102
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335 if (root == null) {
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336 return null;
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337 }
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338
323
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339 XPathVariableResolver resolver = variables != null
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340 ? new MapXPathVariableResolver(variables)
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341 : null;
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342
102
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343 try {
323
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344 XPath xpath = newXPath(namespaceContext, resolver);
102
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345 if (xpath != null) {
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346 return xpath.evaluate(query, root, returnType);
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347 }
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348 }
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349 catch (XPathExpressionException xpee) {
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350 logger.error(xpee.getLocalizedMessage(), xpee);
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351 }
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352
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353 return null;
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354 }
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355
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356 /**
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357 * Streams out an XML document to a given output stream.
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358 * @param document The document to be streamed out.
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359 * @param out The output stream to be used.
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360 * @return true if operation succeeded else false.
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361 */
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362 public static boolean toStream(Document document, OutputStream out) {
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363 try {
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364 Transformer transformer =
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365 TransformerFactory.newInstance().newTransformer();
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366 DOMSource source = new DOMSource(document);
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367 StreamResult result = new StreamResult(out);
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368 transformer.transform(source, result);
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369 return true;
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370 }
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371 catch (TransformerConfigurationException tce) {
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372 logger.error(tce.getLocalizedMessage(), tce);
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373 }
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374 catch (TransformerFactoryConfigurationError tfce) {
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375 logger.error(tfce.getLocalizedMessage(), tfce);
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376 }
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377 catch (TransformerException te) {
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378 logger.error(te.getLocalizedMessage(), te);
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
379 }
4122dbc9711b Added a new package artifacts-common for classes and utilities used in several packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
380
4122dbc9711b Added a new package artifacts-common for classes and utilities used in several packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
381 return false;
4122dbc9711b Added a new package artifacts-common for classes and utilities used in several packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
382 }
135
a48882c9e096 Added a convinience method to transform an document into a byte array.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 103
diff changeset
383
286
715bdf990739 Made XMLUtils.toString(Document) static.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 276
diff changeset
384 public static String toString(Document document) {
276
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
385 try {
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
386 Transformer transformer =
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
387 TransformerFactory.newInstance().newTransformer();
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
388 DOMSource source = new DOMSource(document);
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
389 StringWriter out = new StringWriter();
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
390 StreamResult result = new StreamResult(out);
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
391 transformer.transform(source, result);
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
392 out.flush();
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
393 return out.toString();
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
394 }
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
395 catch (TransformerConfigurationException tce) {
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
396 logger.error(tce.getLocalizedMessage(), tce);
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
397 }
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
398 catch (TransformerFactoryConfigurationError tfce) {
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
399 logger.error(tfce.getLocalizedMessage(), tfce);
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
400 }
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
401 catch (TransformerException te) {
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
402 logger.error(te.getLocalizedMessage(), te);
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
403 }
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
404
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
405 return null;
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
406 }
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
407
234
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
408 public static byte [] toByteArray(Document document) {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
409 return toByteArray(document, false);
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
410 }
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
411
135
a48882c9e096 Added a convinience method to transform an document into a byte array.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 103
diff changeset
412 /**
a48882c9e096 Added a convinience method to transform an document into a byte array.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 103
diff changeset
413 * Transforms an XML document into a byte array.
a48882c9e096 Added a convinience method to transform an document into a byte array.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 103
diff changeset
414 * @param document The document to be streamed out.
234
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
415 * @param compress The document should be compressed, too.
135
a48882c9e096 Added a convinience method to transform an document into a byte array.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 103
diff changeset
416 * @return the byte array or null if operation failed or
a48882c9e096 Added a convinience method to transform an document into a byte array.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 103
diff changeset
417 * document is null.
a48882c9e096 Added a convinience method to transform an document into a byte array.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 103
diff changeset
418 */
234
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
419 public static byte [] toByteArray(Document document, boolean compress) {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
420 if (document != null) {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
421 try {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
422 ByteArrayOutputStream baos = new ByteArrayOutputStream();
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
423 OutputStream out = compress
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
424 ? new GZIPOutputStream(baos)
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
425 : baos;
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
426 boolean success = toStream(document, out);
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
427 out.flush();
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
428 out.close();
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
429 return success
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
430 ? baos.toByteArray()
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
431 : null;
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
432 }
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
433 catch (IOException ioe) {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
434 logger.error(ioe);
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
435 }
135
a48882c9e096 Added a convinience method to transform an document into a byte array.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 103
diff changeset
436 }
234
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
437 return null;
135
a48882c9e096 Added a convinience method to transform an document into a byte array.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 103
diff changeset
438 }
147
9a64e0c1c737 Added code to load user from database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 135
diff changeset
439
9a64e0c1c737 Added code to load user from database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 135
diff changeset
440 public static Document fromByteArray(byte [] data) {
234
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
441 return fromByteArray(data, false);
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
442 }
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
443
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
444 public static Document fromByteArray(byte [] data, boolean decompress) {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
445 if (data != null) {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
446 InputStream in = new ByteArrayInputStream(data);
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
447 try {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
448 if (decompress) {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
449 in = new GZIPInputStream(in);
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
450 }
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
451 return parseDocument(in);
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
452 }
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
453 catch (IOException ioe) {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
454 logger.error(ioe);
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
455 }
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
456 finally {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
457 try {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
458 in.close();
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
459 }
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
460 catch (IOException ioe) {
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
461 logger.error(ioe);
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
462 }
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
463 }
147
9a64e0c1c737 Added code to load user from database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 135
diff changeset
464 }
234
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
465 return null;
147
9a64e0c1c737 Added code to load user from database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 135
diff changeset
466 }
102
4122dbc9711b Added a new package artifacts-common for classes and utilities used in several packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
467 }
4122dbc9711b Added a new package artifacts-common for classes and utilities used in several packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
468 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org