Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MapInfoService.java @ 2078:cbeeaaad1056

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#440 Support river axes that consist of more than a single geometry. flys-artifacts/trunk@3593 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 05 Jan 2012 10:46:32 +0000
parents 092e1e5020bc
children a18ec861b4a4
rev   line source
1058
c37084f31c84 Implemented a MapInfo service that returns some basic information to create maps for specific rivers.
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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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092e1e5020bc Added a new MapGenerator which only returns a map configuration document at the moment (work still in progress).
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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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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
c37084f31c84 Implemented a MapInfo service that returns some basic information to create maps for specific rivers.
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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 Envelope env = GeometryUtils.getRiverBoundary(river);
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81 if (env != null) {
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82 String bounds = GeometryUtils.jtsBoundsToOLBounds(env);
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83 logger.debug("River '" + river + "' bounds: " + bounds);
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84
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85 Element bbox = cr.create("bbox");
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86 cr.addAttr(bbox, "value", bounds);
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87 root.appendChild(bbox);
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88 }
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89
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90 String xpathS = XPATH_RIVER_PROJECTION.replace("%RIVER%", river);
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91 String sridStr = Config.getStringXPath(xpathS);
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92 if (sridStr != null && sridStr.length() > 0) {
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93 Element srid = cr.create("srid");
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94 cr.addAttr(srid, "value", sridStr);
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95 root.appendChild(srid);
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96 }
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97
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98 String xpathB = XPATH_RIVER_BACKGROUND.replace("%RIVER%", river);
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99 Element back = (Element) Config.getNodeXPath(xpathB);
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100 if (back != null) {
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101 Element background = cr.create("background-wms");
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102 cr.addAttr(background, "url", back.getAttribute("url"));
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103 cr.addAttr(background, "layers", back.getAttribute("layers"));
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104 root.appendChild(background);
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105 }
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106
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107 String xpathWMS = XPATH_RIVER_WMS.replace("%RIVER%", river);
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108 String wmsStr = Config.getStringXPath(xpathWMS);
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109 if (wmsStr != null && wmsStr.length() > 0) {
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110 Element wms = cr.create("river-wms");
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111 cr.addAttr(wms, "url", wmsStr);
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112 root.appendChild(wms);
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113 }
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114
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115 return result;
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116 }
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117
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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118
c37084f31c84 Implemented a MapInfo service that returns some basic information to create maps for specific rivers.
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119 protected String extractRiver(Document data) {
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120 return XMLUtils.xpathString(
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121 data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE);
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122 }
c37084f31c84 Implemented a MapInfo service that returns some basic information to create maps for specific rivers.
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123 }
c37084f31c84 Implemented a MapInfo service that returns some basic information to create maps for specific rivers.
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124 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org