Mercurial > dive4elements > framework

annotate artifacts-common/src/main/java/de/intevation/artifacts/common/utils/XMLUtils.java @ 350:ab743e750ac6

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Changed namespace awareness in XML parsing to use no auto-boxing. Fixed a stranged compilation bug with OpenJDK. artifacts/trunk@3311 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 23 Nov 2011 17:17:39 +0000
parents b3eb029e07dd
children 6431b7efe240
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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1282cf96d3eb Corrected a package definition in the artifacts-common package.
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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);
102
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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 }
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152
102
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153 }
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154 } // class ElementCreator
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155
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156 /**
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157 * Creates a new XML document
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158 * @return the new XML document ot null if something went wrong during
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159 * creation.
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160 */
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161 public static final Document newDocument() {
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162 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
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163 factory.setNamespaceAware(true);
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164
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165 try {
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166 return factory.newDocumentBuilder().newDocument();
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167 }
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168 catch (ParserConfigurationException pce) {
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169 logger.error(pce.getLocalizedMessage(), pce);
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170 }
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171 return null;
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172 }
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173
335
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174
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175 /**
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176 * Create xml/string representation of element (nested in otherwise empty
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177 * document).
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178 * @param element element to inspect in string.
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179 * @return string with xml representation of element.
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180 */
338
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181 public final static String toString(Node node) {
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182 Document doc = newDocument();
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183 doc.appendChild(doc.importNode(node,true));
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184 return toString(doc);
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185 }
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186
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187
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188 /**
102
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189 * Loads a XML document namespace aware from a file
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190 * @param file The file to load.
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191 * @return the XML document or null if something went wrong
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192 * during loading.
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193 */
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194 public static final Document parseDocument(File file) {
147
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195 InputStream inputStream = null;
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196 try {
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197 inputStream = new BufferedInputStream(new FileInputStream(file));
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198 return parseDocument(inputStream);
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199 }
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200 catch (IOException ioe) {
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201 logger.error(ioe.getLocalizedMessage(), ioe);
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202 }
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203 finally {
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204 if (inputStream != null) {
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205 try { inputStream.close(); }
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206 catch (IOException ioe) {}
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207 }
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208 }
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209 return null;
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210 }
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211
349
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212
147
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213 public static final Document parseDocument(InputStream inputStream) {
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214 return parseDocument(inputStream, Boolean.TRUE);
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215 }
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216
350
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217 public static final Document parseDocument(
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218 InputStream inputStream,
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219 Boolean namespaceAware
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220 ) {
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221 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
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222
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223 if (namespaceAware != null) {
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224 factory.setNamespaceAware(namespaceAware.booleanValue());
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225 }
102
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226
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227 try {
147
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228 return factory.newDocumentBuilder().parse(inputStream);
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229 }
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230 catch (ParserConfigurationException pce) {
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231 logger.error(pce.getLocalizedMessage(), pce);
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232 }
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233 catch (SAXException se) {
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234 logger.error(se.getLocalizedMessage(), se);
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235 }
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236 catch (IOException ioe) {
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237 logger.error(ioe.getLocalizedMessage(), ioe);
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238 }
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239 return null;
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240 }
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241
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242 /**
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243 * Creates a new XPath without a namespace context.
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244 * @return the new XPath.
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245 */
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246 public static final XPath newXPath() {
323
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247 return newXPath(null, null);
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248 }
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249
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250 /**
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251 * Creates a new XPath with a given namespace context.
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252 * @param namespaceContext The namespace context to be used or null
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253 * if none should be used.
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254 * @return The new XPath
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255 */
323
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256 public static final XPath newXPath(
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257 NamespaceContext namespaceContext,
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258 XPathVariableResolver resolver)
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259 {
102
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260 XPathFactory factory = XPathFactory.newInstance();
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261 XPath xpath = factory.newXPath();
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262 if (namespaceContext != null) {
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263 xpath.setNamespaceContext(namespaceContext);
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264 }
323
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265
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266 if (resolver != null) {
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267 xpath.setXPathVariableResolver(resolver);
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268 }
102
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269 return xpath;
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270 }
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271
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272 /**
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273 * Evaluates an XPath query on a given object and returns the result
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274 * as a given type. No namespace context is used.
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275 * @param root The object which is used as the root of the tree to
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276 * be searched in.
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277 * @param query The XPath query
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278 * @param returnTyp The type of the result.
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279 * @return The result of type 'returnTyp' or null if something
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280 * went wrong during XPath evaluation.
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281 */
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282 public static final Object xpath(
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283 Object root,
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284 String query,
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285 QName returnTyp
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286 ) {
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287 return xpath(root, query, returnTyp, null);
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288 }
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289
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290 /**
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291 * Evaluates an XPath query on a given object and returns the result
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292 * as a string. A given namespace context is used.
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293 * @param root The object which is used as the root of the tree to
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294 * be searched in.
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295 * @param query The XPath query
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296 * @param namespaceContext The namespace context to be used or null
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297 * if none should be used.
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298 * @return The result of the query or null if something went wrong
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299 * during XPath evaluation.
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300 */
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301 public static final String xpathString(
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302 Object root, String query, NamespaceContext namespaceContext
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303 ) {
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304 return (String)xpath(
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305 root, query, XPathConstants.STRING, namespaceContext);
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306 }
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307
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308 /**
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309 * Evaluates an XPath query on a given object and returns the result
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310 * as a given type. Optionally a namespace context is used.
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311 * @param root The object which is used as the root of the tree to
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312 * be searched in.
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313 * @param query The XPath query
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314 * @param returnType The type of the result.
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315 * @param namespaceContext The namespace context to be used or null
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316 * if none should be used.
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317 * @return The result of type 'returnTyp' or null if something
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318 * went wrong during XPath evaluation.
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319 */
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320 public static final Object xpath(
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321 Object root,
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322 String query,
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323 QName returnType,
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324 NamespaceContext namespaceContext
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325 ) {
323
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326 return xpath(root, query, returnType, namespaceContext, null);
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327 }
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328
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329 public static final Object xpath(
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330 Object root,
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331 String query,
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332 QName returnType,
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333 NamespaceContext namespaceContext,
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334 Map<String, String> variables)
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335 {
102
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336 if (root == null) {
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337 return null;
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338 }
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339
323
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340 XPathVariableResolver resolver = variables != null
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341 ? new MapXPathVariableResolver(variables)
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342 : null;
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343
102
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344 try {
323
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345 XPath xpath = newXPath(namespaceContext, resolver);
102
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346 if (xpath != null) {
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347 return xpath.evaluate(query, root, returnType);
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348 }
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349 }
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350 catch (XPathExpressionException xpee) {
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351 logger.error(xpee.getLocalizedMessage(), xpee);
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352 }
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353
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354 return null;
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355 }
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356
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357 /**
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358 * Streams out an XML document to a given output stream.
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359 * @param document The document to be streamed out.
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360 * @param out The output stream to be used.
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361 * @return true if operation succeeded else false.
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362 */
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363 public static boolean toStream(Document document, OutputStream out) {
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364 try {
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365 Transformer transformer =
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366 TransformerFactory.newInstance().newTransformer();
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367 DOMSource source = new DOMSource(document);
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368 StreamResult result = new StreamResult(out);
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369 transformer.transform(source, result);
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370 return true;
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371 }
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372 catch (TransformerConfigurationException tce) {
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373 logger.error(tce.getLocalizedMessage(), tce);
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374 }
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375 catch (TransformerFactoryConfigurationError tfce) {
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376 logger.error(tfce.getLocalizedMessage(), tfce);
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377 }
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378 catch (TransformerException te) {
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
379 logger.error(te.getLocalizedMessage(), te);
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
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 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
383 }
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
384
286
715bdf990739 Made XMLUtils.toString(Document) static.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 276
diff changeset
385 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
386 try {
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
387 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
388 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
389 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
390 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
391 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
392 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
393 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
394 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
395 }
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
396 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
397 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
398 }
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
399 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
400 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
401 }
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
402 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
403 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
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
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
406 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
407 }
8b58259d3dd3 Added static toString(Document) method which transform XML documents to Strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 234
diff changeset
408
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
409 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
410 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
411 }
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
412
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
413 /**
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 * 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
415 * @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
416 * @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
417 * @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
418 * 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
419 */
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
420 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
421 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
422 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
423 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
424 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
425 ? 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
426 : 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
427 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
428 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
429 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
430 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
431 ? 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
432 : 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
433 }
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 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
435 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
436 }
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
437 }
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
438 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
439 }
147
9a64e0c1c737 Added code to load user from database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 135
diff changeset
440
9a64e0c1c737 Added code to load user from database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 135
diff changeset
441 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
442 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
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
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 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
446 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
447 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
448 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
449 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
450 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
451 }
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 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
453 }
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 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
455 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
456 }
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 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
458 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
459 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
460 }
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 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
462 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
463 }
23d642319a0b Added a boolean flag to XML byte serialisation to compress/decompress, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 202
diff changeset
464 }
147
9a64e0c1c737 Added code to load user from database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 135
diff changeset
465 }
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
466 return null;
147
9a64e0c1c737 Added code to load user from database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 135
diff changeset
467 }
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
468 }
4122dbc9711b Added a new package artifacts-common for classes and utilities used in several packages.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
469 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org