Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/ArtifactXMLUtilities.java @ 253:07650fc6014c

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Put a name to each Statistic group which is similar to the name of the Series in the Charts. issue83 gnv-artifacts/trunk@326 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Thu, 12 Nov 2009 10:15:05 +0000
parents 3dcd2b0b456e
children e964a3d8f7bc
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 import de.intevation.gnv.transition.timeseries.TimeSeriesOutputTransition;
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32
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33 /**
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34 * @author Tim Englich <tim.englich@intevation.de>
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35 *
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36 */
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37 public class ArtifactXMLUtilities implements Serializable {
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38 /**
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39 *
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40 */
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41 private static final long serialVersionUID = -6236340358303411758L;
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42
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43 /**
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44 * the logger, used to log exceptions and additonaly information
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45 */
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46 private static Logger log = Logger
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47 .getLogger(TimeSeriesOutputTransition.class);
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48
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49 public static final String XFORM_URL = "http://www.w3.org/2002/xforms";
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50 public static final String XFORM_PREFIX = "xform";
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51
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52 /**
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53 * Constructor
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54 */
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55 public ArtifactXMLUtilities() {
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56 }
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57
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58 /**
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59 * @param document
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60 * @return
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61 */
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62 public Element createArtifactElement(Document document, String name) {
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63 Element node = document.createElementNS(
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64 ArtifactNamespaceContext.NAMESPACE_URI, name);
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65 node.setPrefix(ArtifactNamespaceContext.NAMESPACE_PREFIX);
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66 return node;
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67 }
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68
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69 public String writeDocument2String(Document document) {
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70 try {
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71 TransformerFactory transformerFactory = TransformerFactory
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72 .newInstance();
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73 Transformer transformer = transformerFactory.newTransformer();
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74 DOMSource source = new DOMSource(document);
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75 StringWriter sw = new StringWriter();
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76 StreamResult result = new StreamResult(sw);
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77 transformer.transform(source, result);
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78 return sw.getBuffer().toString();
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79 } catch (TransformerConfigurationException e) {
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80 log.error(e, e);
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81 } catch (TransformerFactoryConfigurationError e) {
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82 log.error(e, e);
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83 } catch (TransformerException e) {
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84 log.error(e, e);
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85 }
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86 return null;
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87 }
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88
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89 public Document readDocument(InputStream inputStream) {
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90 Document returnValue = null;
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91 try {
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92 DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory
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93 .newInstance();
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94 DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
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95 returnValue = docBuilder.parse(inputStream);
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96 } catch (ParserConfigurationException e) {
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97 log.error(e, e);
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98 } catch (SAXException e) {
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99 log.error(e, e);
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100 } catch (IOException e) {
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101 log.error(e, e);
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102 }
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103 return returnValue;
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104 }
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105
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106 public Document reInitDocument(Document document) {
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107 try {
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108 byte[] barray = this.writeDocument2String(document).getBytes(
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109 "UTF-8");
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110 InputStream inputStream = new ByteArrayInputStream(barray);
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111 return this.readDocument(inputStream);
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112 } catch (UnsupportedEncodingException e) {
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113 log.error(e, e);
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114 }
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115 return document;
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116 }
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117
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118 public Element createXFormElement(Document document, String name) {
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119 Element node = document.createElementNS(XFORM_URL, name);
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120 node.setPrefix(XFORM_PREFIX);
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121 return node;
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122 }
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123
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124 public Document createExceptionReport(String message, Document document) {
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125 log.debug("ArtifactXMLUtilities.createExceptionReport");
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126 Element exceptionReportNode = this.createArtifactElement(document,
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127 "exceptionreport");
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128 document.appendChild(exceptionReportNode);
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129 Element exceptionNode = this.createArtifactElement(document,
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130 "exception");
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131 exceptionNode.setTextContent(message);
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132 exceptionReportNode.appendChild(exceptionNode);
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133 return document;
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134 }
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135
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136 public Document createSuccessReport(String message, Document document) {
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137 log.debug("ArtifactXMLUtilities.creatSuccessReport");
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138 Element reportNode = this.createArtifactElement(document, "result");
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139 document.appendChild(reportNode);
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140 Element successNode = this.createArtifactElement(document, "success");
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141 successNode.setTextContent(message);
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142 reportNode.appendChild(successNode);
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143 return document;
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144 }
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146 public Node readConfiguration(String fileName){
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147 try {
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148 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
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149 factory.setValidating(false);
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150 return factory.newDocumentBuilder().parse(fileName).getChildNodes().item(0);
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151 } catch (SAXException e) {
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152 log.error(e,e);
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153 return null;
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154 } catch (IOException e) {
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155 log.error(e,e);
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156 return null;
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157 } catch (ParserConfigurationException e) {
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158 log.error(e,e);
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159 return null;
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160 }
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161 }
71
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162
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163 }
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