Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/ArtifactXMLUtilities.java @ 87:ce398a7a99fc

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SQL-Queries formatted, Some Bugs fixed gnv-artifacts/trunk@124 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Thu, 24 Sep 2009 10:05:07 +0000
parents e33c61735a4e
children 1b12021905b9
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.xml.sax.SAXException;
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28
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29 import de.intevation.artifacts.ArtifactNamespaceContext;
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30 import de.intevation.gnv.transition.timeseries.TimeSeriesOutputTransition;
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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.getLogger(TimeSeriesOutputTransition.class);
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46
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47 public static final String XFORM_URL = "http://www.w3.org/2002/xforms";
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48 public static final String XFORM_PREFIX = "xform";
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49
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50 /**
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51 * Constructor
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52 */
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53 public ArtifactXMLUtilities() {
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54 }
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55
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56 /**
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57 * @param document
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58 * @return
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59 */
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60 public Element createArtifactElement(Document document, String name) {
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61 Element node = document.createElementNS(ArtifactNamespaceContext.NAMESPACE_URI, name);
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62 node.setPrefix(ArtifactNamespaceContext.NAMESPACE_PREFIX);
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63 return node;
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64 }
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65
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66 public String writeDocument2String(Document document){
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67 try {
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68 TransformerFactory transformerFactory = TransformerFactory.newInstance();
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69 Transformer transformer = transformerFactory.newTransformer();
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70 DOMSource source = new DOMSource(document);
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71 StringWriter sw = new StringWriter();
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72 StreamResult result = new StreamResult(sw);
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73 transformer.transform(source, result);
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74 return sw.getBuffer().toString();
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75 } catch (TransformerConfigurationException e) {
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76 log.error(e,e);
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77 } catch (TransformerFactoryConfigurationError e) {
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78 log.error(e,e);
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79 } catch (TransformerException e) {
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80 log.error(e,e);
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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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87
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88 public 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.newInstance();
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92 DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
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93 returnValue = docBuilder.parse (inputStream);
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94 } catch (ParserConfigurationException e) {
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95 log.error(e,e);
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96 } catch (SAXException e) {
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97 log.error(e,e);
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98 } catch (IOException e) {
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99 log.error(e,e);
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100 }
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101 return returnValue;
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102 }
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103
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104 public Document reInitDocument(Document document){
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105 try {
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106 byte[] barray = this.writeDocument2String(document).getBytes("UTF-8");
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107 InputStream inputStream = new ByteArrayInputStream(barray);
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108 //StringBufferInputStream inputStream = new StringBufferInputStream();
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109 return this.readDocument(inputStream);
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110 } catch (UnsupportedEncodingException e) {
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111 log.error(e,e);
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112 }
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113 return document;
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114 }
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115
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116 public Element createXFormElement(Document document, String name) {
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117 Element node = document.createElementNS(XFORM_URL, name);
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118 node.setPrefix(XFORM_PREFIX);
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119 return node;
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120 }
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121
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122
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123 }
http://dive4elements.wald.intevation.org