Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/exports/ShapeExporter.java @ 6955:94cb1845c667

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(issue1452) Coalesce to zero to avoid NaN arithmetic.
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 30 Aug 2013 15:45:14 +0200
parents 1b35b2ddfc28
children 5c6fd2c010dd
rev   line source
5912
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1 package org.dive4elements.river.exports;
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2
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3 import java.io.File;
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4 import java.io.FileFilter;
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5 import java.io.IOException;
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6 import java.io.OutputStream;
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7
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8 import org.apache.log4j.Logger;
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9 import org.dive4elements.artifactdatabase.state.ArtifactAndFacet;
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10 import org.dive4elements.artifactdatabase.state.Settings;
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11 import org.dive4elements.artifacts.Artifact;
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12 import org.dive4elements.artifacts.CallContext;
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13 import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
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14 import org.dive4elements.artifacts.common.utils.FileTools;
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15 import org.dive4elements.artifacts.common.utils.XMLUtils;
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16 import org.dive4elements.river.collections.D4EArtifactCollection;
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17 import org.dive4elements.river.themes.ThemeDocument;
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18 import org.w3c.dom.Document;
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19
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20
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21 public class ShapeExporter implements OutGenerator
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22 {
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23 private static final String XPATH_FACET = "/art:action/@art:type";
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24 private static Logger logger = Logger.getLogger(ShapeExporter.class);
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25 private Artifact master;
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26 private Document request;
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27 private OutputStream out;
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28 private CallContext context;
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29 private D4EArtifactCollection collection;
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30 private String facet;
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31 private File dir;
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32
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33 @Override
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34 public void init(Document request, OutputStream out, CallContext context) {
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35 this.request = request;
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36 this.out = out;
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37 this.context = context;
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38 }
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39
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40 @Override
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41 public void setMasterArtifact(Artifact master) {
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42 this.master = master;
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43 }
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44
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45 @Override
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46 public void setCollection(D4EArtifactCollection collection) {
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47 this.collection = collection;
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48 }
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49
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50 @Override
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51 public void doOut(ArtifactAndFacet bundle, ThemeDocument attr, boolean visible) {
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52 String name = bundle.getFacetName();
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53
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54 if (!isFacetValid(name)) {
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55 logger.debug("Facet '" + name + "' is not valid for this exporter!");
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56 return;
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57 }
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58
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59 addData(bundle.getData(context));
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60 }
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61
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62 private void addData(Object data) {
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63 if (data instanceof File) {
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64 this.dir = (File)data;
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65 }
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66 }
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67
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68 private boolean isFacetValid(String name) {
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69 String thisFacet = getFacet();
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70 if (thisFacet == null || thisFacet.length() == 0) {
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71 return false;
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72 }
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73 else if (facet == null || facet.length() == 0) {
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74 return false;
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75 }
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76 else {
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77 return thisFacet.equals(facet);
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78 }
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79 }
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80
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81
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82 /**
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83 * Returns the name of the desired facet.
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84 *
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85 * @return the name of the desired facet.
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86 */
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87 protected String getFacet() {
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88 if (facet == null) {
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89 facet = getFacetFromRequest();
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90 }
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91
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92 return facet;
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93 }
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94
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95 @Override
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96 public void generate() throws IOException {
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97 FileFilter filter = new FileFilter() {
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98 @Override
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99 public boolean accept(File pathname) {
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100 if (pathname.getName().startsWith("wsplgen") &&
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101 !pathname.getName().endsWith(".par")) {
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102 return true;
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103 }
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104 else {
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105 return false;
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106 }
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107 }
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108 };
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109 FileTools.createZipArchive(this.dir, out, filter);
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110 out.close();
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111 }
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112
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113 @Override
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114 public void setSettings(Settings settings) {
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115 //Do nothing.
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116 }
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117
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118 @Override
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119 public Settings getSettings() {
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120 // This exporter has no settings.
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121 return null;
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122 }
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123
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124 /**
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125 * Extracts the name of the requested facet from request document.
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126 *
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127 * @return the name of the requested facet.
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128 */
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129 protected String getFacetFromRequest() {
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130 return XMLUtils.xpathString(
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131 request, XPATH_FACET, ArtifactNamespaceContext.INSTANCE);
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132 }
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133 }
http://dive4elements.wald.intevation.org