Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MapInfoService.java @ 1058:c37084f31c84

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Implemented a MapInfo service that returns some basic information to create maps for specific rivers. flys-artifacts/trunk@2528 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 23 Aug 2011 07:53:41 +0000
parents
children b1b0a0b61845
rev   line source
1058
c37084f31c84 Implemented a MapInfo service that returns some basic information to create maps for specific rivers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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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.Geometry;
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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.backend.SessionHolder;
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21 import de.intevation.flys.model.River;
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22
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23 import de.intevation.flys.model.RiverAxis;
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24 import de.intevation.flys.artifacts.model.RiverFactory;
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25 import de.intevation.flys.utils.GeometryUtils;
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26
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27 import org.hibernate.Session;
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28
c37084f31c84 Implemented a MapInfo service that returns some basic information to create maps for specific rivers.
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29 /**
c37084f31c84 Implemented a MapInfo service that returns some basic information to create maps for specific rivers.
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30 * This service provides information about the supported rivers by this
c37084f31c84 Implemented a MapInfo service that returns some basic information to create maps for specific rivers.
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31 * application.
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32 *
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33 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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34 */
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35 public class MapInfoService extends DefaultService {
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36
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37 /** XPath that points to the river.*/
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38 public static final String XPATH_RIVER = "/mapinfo/river/text()";
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39
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40 public static final String XPATH_RIVER_PROJECTION =
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41 "/artifact-database/floodmap/river[@name='%RIVER%']/srid/@value";
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42
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43 public static final String XPATH_RIVER_BACKGROUND =
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44 "/artifact-database/floodmap/river[@name='%RIVER%']/background-wms";
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45
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46 public static final String XPATH_RIVER_WMS =
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47 "/artifact-database/floodmap/river[@name='%RIVER%']/river-wms/@url";
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48
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49
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50 /** The logger used in this service.*/
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51 private static Logger logger = Logger.getLogger(MapInfoService.class);
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52
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53
c37084f31c84 Implemented a MapInfo service that returns some basic information to create maps for specific rivers.
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54 /**
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55 * The default constructor.
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56 */
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57 public MapInfoService() {
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58 }
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59
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60
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61 public Document process(
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62 Document data,
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63 GlobalContext globalContext,
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64 CallMeta callMeta
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65 ) {
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66 logger.debug("MapInfoService.process");
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67
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68 Document result = XMLUtils.newDocument();
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69 ElementCreator cr = new ElementCreator(result, null, null);
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70
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71 Element mapinfo = cr.create("mapinfo");
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72 result.appendChild(mapinfo);
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73
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74 String river = extractRiver(data);
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75 if (river == null || river.length() == 0) {
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76 logger.warn("Cannot generate information: river is empty!");
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77 return result;
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78 }
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79
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80 Element root = cr.create("river");
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81 cr.addAttr(root, "name", river);
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82 mapinfo.appendChild(root);
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83
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84 RiverAxis axis = RiverAxis.getRiverAxis(river);
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85 if (axis != null) {
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86 Geometry geom = axis.getGeom().getBoundary();
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87 String bounds = GeometryUtils.jtsBoundsToOLBounds(geom);
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88
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89 logger.debug("River '" + river + "' bounds: " + bounds);
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90 Element bbox = cr.create("bbox");
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91 cr.addAttr(bbox, "value", bounds);
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92 root.appendChild(bbox);
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93 }
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94
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95 String xpathS = XPATH_RIVER_PROJECTION.replace("%RIVER%", river);
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96 String sridStr = Config.getStringXPath(xpathS);
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97 if (sridStr != null && sridStr.length() > 0) {
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98 Element srid = cr.create("srid");
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99 cr.addAttr(srid, "value", sridStr);
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100 root.appendChild(srid);
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101 }
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102
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103 String xpathB = XPATH_RIVER_BACKGROUND.replace("%RIVER%", river);
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104 Element back = (Element) Config.getNodeXPath(xpathB);
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105 if (back != null) {
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106 Element background = cr.create("background-wms");
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107 cr.addAttr(background, "url", back.getAttribute("url"));
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108 cr.addAttr(background, "layers", back.getAttribute("layers"));
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109 root.appendChild(background);
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110 }
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111
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112 String xpathWMS = XPATH_RIVER_WMS.replace("%RIVER%", river);
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113 String wmsStr = Config.getStringXPath(xpathWMS);
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114 if (wmsStr != null && wmsStr.length() > 0) {
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115 Element wms = cr.create("river-wms");
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116 cr.addAttr(wms, "url", wmsStr);
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117 root.appendChild(wms);
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118 }
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119
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120 return result;
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121 }
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122
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123
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124 protected String extractRiver(Document data) {
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125 return XMLUtils.xpathString(
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126 data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE);
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127 }
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128 }
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129 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org