Mercurial > dive4elements > gnv-client

annotate gnv/src/main/java/de/intevation/gnv/util/XMLUtils.java @ 683:d49e8695786c

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Ordered imports. Removed needless imports. Removed empty headers. gnv/trunk@855 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 29 Mar 2010 09:10:25 +0000
parents 15ac78a91d1b
children e7fda0ae8b92
rev   line source
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1 package de.intevation.gnv.util;
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2
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3 import java.io.IOException;
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4 import java.io.InputStream;
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5 import java.io.OutputStream;
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6 import java.io.StringBufferInputStream;
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7 import java.io.StringWriter;
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8
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9 import javax.xml.namespace.NamespaceContext;
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10 import javax.xml.namespace.QName;
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12 import javax.xml.parsers.DocumentBuilder;
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13 import javax.xml.parsers.DocumentBuilderFactory;
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14 import javax.xml.parsers.ParserConfigurationException;
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16 import javax.xml.transform.Transformer;
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17 import javax.xml.transform.TransformerConfigurationException;
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18 import javax.xml.transform.TransformerException;
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19 import javax.xml.transform.TransformerFactory;
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20 import javax.xml.transform.TransformerFactoryConfigurationError;
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21
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22 import javax.xml.transform.dom.DOMSource;
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24 import javax.xml.transform.stream.StreamResult;
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26 import javax.xml.xpath.XPath;
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27 import javax.xml.xpath.XPathConstants;
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28 import javax.xml.xpath.XPathExpressionException;
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29 import javax.xml.xpath.XPathFactory;
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30
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31 import org.apache.log4j.Logger;
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33 import org.w3c.dom.Attr;
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34 import org.w3c.dom.Document;
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35 import org.w3c.dom.Element;
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36 import org.w3c.dom.Node;
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37 import org.w3c.dom.NodeList;
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39 import org.xml.sax.SAXException;
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40
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41 /**
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42 * @author Sascha L. Teichmann
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43 */
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44 public class XMLUtils {
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45 private static Logger logger = Logger.getLogger(XMLUtils.class);
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46
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47 public XMLUtils() {
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48 }
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49
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50 public static class ElementCreator {
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51 protected Document document;
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52 protected String ns;
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53 protected String prefix;
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54
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55 public ElementCreator(Document document, String ns, String prefix) {
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56 this.document = document;
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57 this.ns = ns;
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58 this.prefix = prefix;
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59 }
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60
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61 public Element create(String name) {
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62 Element element = document.createElementNS(ns, name);
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63 element.setPrefix(prefix);
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64 return element;
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65 }
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66
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67 public void addAttr(Element element, String name, String value) {
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68 Attr attr = document.createAttributeNS(ns, name);
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69 attr.setValue(value);
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70 attr.setPrefix(prefix);
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71 element.setAttributeNode(attr);
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72 }
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73 } // class ElementCreator
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74
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75 public static Document newDocument() {
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76 try {
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77 return DocumentBuilderFactory.newInstance().newDocumentBuilder()
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78 .newDocument();
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79 } catch (ParserConfigurationException pce) {
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80 logger.error(pce.getLocalizedMessage(), pce);
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81 }
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82 return null;
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83 }
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84
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85 public static XPath newXPath() {
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86 return newXPath(null);
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87 }
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88
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89 public static XPath newXPath(NamespaceContext namespaceContext) {
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90 XPathFactory factory = XPathFactory.newInstance();
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91 XPath xpath = factory.newXPath();
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92 if (namespaceContext != null) {
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93 xpath.setNamespaceContext(namespaceContext);
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94 }
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95 return xpath;
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96 }
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97
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98 public static Object xpath(Object root, String query, QName returnTyp) {
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99 return xpath(root, query, returnTyp, null);
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100 }
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101
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102 public static final String xpathString(Object root, String query,
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103 NamespaceContext namespaceContext) {
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104 return (String) xpath(root, query, XPathConstants.STRING,
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105 namespaceContext);
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106 }
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107
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108 public static final Object xpath(Object root, String query,
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109 QName returnType,
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110 NamespaceContext namespaceContext) {
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111 if (root == null) {
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112 return null;
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113 }
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114
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115 try {
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116 XPath xpath = new XMLUtils().newXPath(namespaceContext);
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117 if (xpath != null) {
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118 return xpath.evaluate(query, root, returnType);
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119 }
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120 } catch (XPathExpressionException xpee) {
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121 logger.error(xpee.getLocalizedMessage(), xpee);
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122 }
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123
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124 return null;
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125 }
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126
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127 public static Object getXPath(Object root, String query, QName returnType) {
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128 return getXPath(root,query,returnType,ArtifactNamespaceContext.INSTANCE);
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129 }
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130
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131 public static Object getXPath(
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132 Object root, String query, QName returnType, NamespaceContext context
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133 ) {
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134 return xpath(root, query, returnType, context);
2
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135 }
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136
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137 public static String getStringXPath(String xpath) {
2
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138 return getStringXPath(xpath, null);
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139 }
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140
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141 public static NodeList getNodeSetXPath(Object root, String query) {
36
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142 return (NodeList) getXPath(root, query, XPathConstants.NODESET);
2
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143 }
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144
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145 public static Node getNodeXPath(Object root, String query) {
36
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146 return (Node) getXPath(root, query, XPathConstants.NODE);
2
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147 }
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148
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149 public static String getStringXPath(Object root, String xpath) {
2
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150 return getStringXPath(root, xpath, null);
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151 }
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152
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153 public static String getStringXPath(Object root, String query, String def) {
36
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154 String s = (String) getXPath(root, query, XPathConstants.STRING);
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155 return s == null || s.length() == 0 ? def : s;
2
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156 }
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157
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cbd397712ecf Render an OpenLayers map with the layer even published after triggering shapefile and mapfile creation.
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158 public static Document readDocument(InputStream inputStream) {
2
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159 Document returnValue = null;
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160 try {
36
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161 DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory
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162 .newInstance();
389
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163 docBuilderFactory.setNamespaceAware(true);
2
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164 DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
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165 returnValue = docBuilder.parse(inputStream);
2
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166 } catch (ParserConfigurationException e) {
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167 logger.error(e, e);
2
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168 } catch (SAXException e) {
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169 logger.error(e, e);
2
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170 } catch (IOException e) {
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171 logger.error(e, e);
2
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172 }
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173 return returnValue;
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174 }
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175
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176 public static String writeNode2String(Node node) {
2
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177 try {
11
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178 DOMSource source = new DOMSource(node);
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179 return writeDOMSource2String(source);
2
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180 } catch (TransformerConfigurationException e) {
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181 logger.error(e, e);
2
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182 } catch (TransformerFactoryConfigurationError e) {
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183 logger.error(e, e);
2
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184 } catch (TransformerException e) {
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185 logger.error(e, e);
2
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186 }
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187 return null;
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188 }
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189
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190 public static Document reInitDocument(Document document) {
36
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191
585
2e690cb2247c Show information about MapServer path and layer name after publishing calculated shapefiles as wms. Use MapServer settings configured in conf.xml to feed OpenLayers client.
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diff changeset
192 StringBufferInputStream inputStream = new StringBufferInputStream(
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diff changeset
193 writeDocument2String(document));
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194 return readDocument(inputStream);
11
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195 }
36
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196
585
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197 public static String writeDocument2String(Document document) {
11
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198 try {
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199 DOMSource source = new DOMSource(document);
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200 return writeDOMSource2String(source);
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201 } catch (TransformerConfigurationException e) {
36
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202 logger.error(e, e);
11
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203 } catch (TransformerFactoryConfigurationError e) {
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204 logger.error(e, e);
11
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205 } catch (TransformerException e) {
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206 logger.error(e, e);
11
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207 }
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208 return null;
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209 }
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210
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211 /**
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212 * @param source
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213 * @return
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214 * @throws TransformerFactoryConfigurationError
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215 * @throws TransformerConfigurationException
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diff changeset
216 * @throws TransformerException
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diff changeset
217 */
585
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diff changeset
218 private static String writeDOMSource2String(DOMSource source)
38
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diff changeset
219 throws TransformerFactoryConfigurationError,
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220 TransformerConfigurationException,
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diff changeset
221 TransformerException {
36
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222 TransformerFactory transformerFactory = TransformerFactory
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223 .newInstance();
11
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diff changeset
224 Transformer transformer = transformerFactory.newTransformer();
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225 StringWriter sw = new StringWriter();
36
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226 StreamResult result = new StreamResult(sw);
11
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diff changeset
227 transformer.transform(source, result);
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diff changeset
228 return sw.getBuffer().toString();
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diff changeset
229 }
670
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diff changeset
230
b89b31293772 Implemented first things to store/load projects.
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diff changeset
231 public static boolean toStream(Document document, OutputStream out) {
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diff changeset
232 try {
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233 Transformer transformer =
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234 TransformerFactory.newInstance().newTransformer();
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diff changeset
235 DOMSource source = new DOMSource(document);
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diff changeset
236 StreamResult result = new StreamResult(out);
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diff changeset
237 transformer.transform(source, result);
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238 return true;
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parents: 585
diff changeset
239 }
b89b31293772 Implemented first things to store/load projects.
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diff changeset
240 catch (TransformerConfigurationException tce) {
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diff changeset
241 logger.error(tce.getLocalizedMessage(), tce);
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diff changeset
242 }
b89b31293772 Implemented first things to store/load projects.
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parents: 585
diff changeset
243 catch (TransformerFactoryConfigurationError tfce) {
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diff changeset
244 logger.error(tfce.getLocalizedMessage(), tfce);
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diff changeset
245 }
b89b31293772 Implemented first things to store/load projects.
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diff changeset
246 catch (TransformerException te) {
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diff changeset
247 logger.error(te.getLocalizedMessage(), te);
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diff changeset
248 }
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diff changeset
249
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diff changeset
250 return false;
681
15ac78a91d1b Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 670
diff changeset
251 }
2
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252 }
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253 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:
http://dive4elements.wald.intevation.org