Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/ArtifactXMLUtilities.java @ 458:92d6cf448598

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Improved raster tile based height evaluation. gnv-artifacts/trunk@512 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 06 Jan 2010 10:09:51 +0000
parents b8080695ea62
children dde7f51dbe1e
rev   line source
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1 /**
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2 *
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3 */
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4 package de.intevation.gnv.utils;
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5
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6 import java.io.ByteArrayInputStream;
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7 import java.io.IOException;
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8 import java.io.InputStream;
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9 import java.io.Serializable;
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10 import java.io.StringWriter;
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11 import java.io.UnsupportedEncodingException;
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12
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13 import javax.xml.parsers.DocumentBuilder;
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14 import javax.xml.parsers.DocumentBuilderFactory;
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15 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 import javax.xml.transform.dom.DOMSource;
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22 import javax.xml.transform.stream.StreamResult;
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23
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24 import org.apache.log4j.Logger;
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25 import org.w3c.dom.Document;
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26 import org.w3c.dom.Element;
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27 import org.w3c.dom.Node;
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28 import org.xml.sax.SAXException;
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29
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30 import de.intevation.artifacts.ArtifactNamespaceContext;
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31
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32 /**
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33 * @author Tim Englich <tim.englich@intevation.de>
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34 *
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35 */
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36 public class ArtifactXMLUtilities implements Serializable {
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37 /**
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38 *
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39 */
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40 private static final long serialVersionUID = -6236340358303411758L;
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41
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42 /**
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43 * the logger, used to log exceptions and additonaly information
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44 */
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45 private static Logger log = Logger
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46 .getLogger(ArtifactXMLUtilities.class);
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47
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48 public static final String XFORM_URL = "http://www.w3.org/2002/xforms";
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49 public static final String XFORM_PREFIX = "xform";
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50
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51 /**
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52 * Constructor
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53 */
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54 public ArtifactXMLUtilities() {
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55 }
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56
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57 /**
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58 * @param document
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59 * @return
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60 */
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61 public Element createArtifactElement(Document document, String name) {
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62 Element node = document.createElementNS(
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63 ArtifactNamespaceContext.NAMESPACE_URI, name);
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64 node.setPrefix(ArtifactNamespaceContext.NAMESPACE_PREFIX);
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65 return node;
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66 }
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67
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68 public String writeDocument2String(Document document) {
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69 try {
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70 TransformerFactory transformerFactory = TransformerFactory
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71 .newInstance();
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72 Transformer transformer = transformerFactory.newTransformer();
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73 DOMSource source = new DOMSource(document);
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74 StringWriter sw = new StringWriter();
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75 StreamResult result = new StreamResult(sw);
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76 transformer.transform(source, result);
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77 return sw.getBuffer().toString();
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78 } catch (TransformerConfigurationException e) {
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79 log.error(e, e);
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80 } catch (TransformerFactoryConfigurationError e) {
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81 log.error(e, e);
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82 } catch (TransformerException e) {
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83 log.error(e, e);
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84 }
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85 return null;
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86 }
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87
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88 public static Document readDocument(InputStream inputStream) {
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89 Document returnValue = null;
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90 try {
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91 DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory
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92 .newInstance();
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93 DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
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94 returnValue = docBuilder.parse(inputStream);
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95 } catch (ParserConfigurationException e) {
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96 log.error(e, e);
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97 } catch (SAXException e) {
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98 log.error(e, e);
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99 } catch (IOException e) {
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100 log.error(e, e);
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101 }
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102 return returnValue;
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103 }
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104
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105 public Document reInitDocument(Document document) {
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106 try {
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107 byte[] barray = this.writeDocument2String(document).getBytes(
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108 "UTF-8");
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109 InputStream inputStream = new ByteArrayInputStream(barray);
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110 return this.readDocument(inputStream);
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111 } catch (UnsupportedEncodingException e) {
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112 log.error(e, e);
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113 }
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114 return document;
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115 }
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116
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117 public static Element createXFormElement(Document document, String name) {
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118 Element node = document.createElementNS(XFORM_URL, name);
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119 node.setPrefix(XFORM_PREFIX);
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120 return node;
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121 }
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122
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123 public Document createExceptionReport(String message, Document document) {
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124 log.debug("ArtifactXMLUtilities.createExceptionReport");
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125 Element exceptionReportNode = this.createArtifactElement(document,
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126 "exceptionreport");
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127 document.appendChild(exceptionReportNode);
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128 Element exceptionNode = this.createArtifactElement(document,
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129 "exception");
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130 exceptionNode.setTextContent(message);
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131 exceptionReportNode.appendChild(exceptionNode);
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132 return document;
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133 }
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134
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135 public Document createSuccessReport(String message, Document document) {
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136 log.debug("ArtifactXMLUtilities.creatSuccessReport");
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137 Element reportNode = this.createArtifactElement(document, "result");
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138 document.appendChild(reportNode);
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139 Element successNode = this.createArtifactElement(document, "success");
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140 successNode.setTextContent(message);
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141 reportNode.appendChild(successNode);
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142 return document;
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143 }
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144
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145 public Node readConfiguration(String fileName){
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146 try {
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147 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
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148 factory.setValidating(false);
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149 return factory.newDocumentBuilder().parse(fileName).getChildNodes().item(0);
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150 } catch (SAXException e) {
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151 log.error(e,e);
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152 return null;
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153 } catch (IOException e) {
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154 log.error(e,e);
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155 return null;
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156 } catch (ParserConfigurationException e) {
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157 log.error(e,e);
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158 return null;
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159 }
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160 }
71
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161
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162 }
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