Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MapInfoService.java @ 3809:cc83b8e42dbe
Picked rev3347-rev3351 from trunk.
flys-artifacts/tags/pre2.6-2011-12-05@3352 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Mon, 05 Dec 2011 09:48:44 +0000 |
parents | 092e1e5020bc |
children | cbeeaaad1056 |
rev | line source |
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1 package de.intevation.flys.artifacts.services; |
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2 |
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3 import org.apache.log4j.Logger; |
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4 |
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5 import org.w3c.dom.Document; |
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6 import org.w3c.dom.Element; |
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7 |
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8 import com.vividsolutions.jts.geom.Envelope; |
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9 |
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10 import de.intevation.artifacts.CallMeta; |
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11 import de.intevation.artifacts.GlobalContext; |
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12 |
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13 import de.intevation.artifacts.common.ArtifactNamespaceContext; |
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14 import de.intevation.artifacts.common.utils.Config; |
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15 import de.intevation.artifacts.common.utils.XMLUtils; |
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16 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator; |
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17 |
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18 import de.intevation.artifactdatabase.DefaultService; |
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19 |
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20 import de.intevation.flys.model.River; |
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21 |
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22 import de.intevation.flys.model.RiverAxis; |
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23 import de.intevation.flys.utils.GeometryUtils; |
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24 |
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25 /** |
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26 * This service provides information about the supported rivers by this |
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27 * application. |
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28 * |
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29 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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30 */ |
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31 public class MapInfoService extends DefaultService { |
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32 |
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33 /** XPath that points to the river.*/ |
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34 public static final String XPATH_RIVER = "/mapinfo/river/text()"; |
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35 |
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36 public static final String XPATH_RIVER_PROJECTION = |
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37 "/artifact-database/floodmap/river[@name='%RIVER%']/srid/@value"; |
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38 |
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39 public static final String XPATH_RIVER_BACKGROUND = |
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40 "/artifact-database/floodmap/river[@name='%RIVER%']/background-wms"; |
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41 |
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42 public static final String XPATH_RIVER_WMS = |
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43 "/artifact-database/floodmap/river[@name='%RIVER%']/river-wms/@url"; |
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44 |
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45 |
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46 /** The logger used in this service.*/ |
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47 private static Logger logger = Logger.getLogger(MapInfoService.class); |
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48 |
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49 |
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50 /** |
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51 * The default constructor. |
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52 */ |
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53 public MapInfoService() { |
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54 } |
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55 |
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56 |
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57 public Document process( |
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58 Document data, |
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59 GlobalContext globalContext, |
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60 CallMeta callMeta |
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61 ) { |
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62 logger.debug("MapInfoService.process"); |
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63 |
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64 Document result = XMLUtils.newDocument(); |
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65 ElementCreator cr = new ElementCreator(result, null, null); |
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66 |
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67 Element mapinfo = cr.create("mapinfo"); |
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68 result.appendChild(mapinfo); |
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69 |
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70 String river = extractRiver(data); |
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71 if (river == null || river.length() == 0) { |
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72 logger.warn("Cannot generate information: river is empty!"); |
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73 return result; |
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74 } |
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75 |
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76 Element root = cr.create("river"); |
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77 cr.addAttr(root, "name", river); |
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78 mapinfo.appendChild(root); |
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79 |
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80 RiverAxis axis = RiverAxis.getRiverAxis(river); |
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81 if (axis != null) { |
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82 Envelope env = axis.getGeom().getEnvelopeInternal(); |
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83 String bounds = GeometryUtils.jtsBoundsToOLBounds(env); |
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84 |
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85 logger.debug("River '" + river + "' bounds: " + bounds); |
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86 Element bbox = cr.create("bbox"); |
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87 cr.addAttr(bbox, "value", bounds); |
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88 root.appendChild(bbox); |
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89 } |
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90 |
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91 String xpathS = XPATH_RIVER_PROJECTION.replace("%RIVER%", river); |
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92 String sridStr = Config.getStringXPath(xpathS); |
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93 if (sridStr != null && sridStr.length() > 0) { |
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94 Element srid = cr.create("srid"); |
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95 cr.addAttr(srid, "value", sridStr); |
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96 root.appendChild(srid); |
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97 } |
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98 |
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99 String xpathB = XPATH_RIVER_BACKGROUND.replace("%RIVER%", river); |
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100 Element back = (Element) Config.getNodeXPath(xpathB); |
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101 if (back != null) { |
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102 Element background = cr.create("background-wms"); |
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103 cr.addAttr(background, "url", back.getAttribute("url")); |
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104 cr.addAttr(background, "layers", back.getAttribute("layers")); |
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105 root.appendChild(background); |
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106 } |
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107 |
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108 String xpathWMS = XPATH_RIVER_WMS.replace("%RIVER%", river); |
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109 String wmsStr = Config.getStringXPath(xpathWMS); |
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110 if (wmsStr != null && wmsStr.length() > 0) { |
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111 Element wms = cr.create("river-wms"); |
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112 cr.addAttr(wms, "url", wmsStr); |
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113 root.appendChild(wms); |
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114 } |
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115 |
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116 return result; |
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117 } |
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118 |
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119 |
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120 protected String extractRiver(Document data) { |
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121 return XMLUtils.xpathString( |
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122 data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE); |
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123 } |
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124 } |
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125 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |