Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/RiverAxisState.java @ 1077:3067e700fc13
Minor cosmetics and docs.
flys-artifacts/trunk@2574 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Thu, 25 Aug 2011 10:34:20 +0000 |
parents | e7c1ebfc2701 |
children | adb52a2005e7 |
rev | line source |
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1 package de.intevation.flys.artifacts.states; |
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2 |
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3 import java.util.HashMap; |
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4 import java.util.List; |
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5 import java.util.Map; |
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6 |
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7 import javax.xml.xpath.XPathConstants; |
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8 |
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9 import com.vividsolutions.jts.geom.Geometry; |
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10 |
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11 import org.apache.log4j.Logger; |
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12 |
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13 import org.w3c.dom.Document; |
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14 |
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15 import de.intevation.artifacts.CallContext; |
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16 import de.intevation.artifacts.CallMeta; |
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17 |
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18 import de.intevation.artifacts.common.utils.Config; |
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19 import de.intevation.artifacts.common.utils.XMLUtils; |
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20 |
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21 import de.intevation.artifactdatabase.state.Facet; |
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22 |
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23 import de.intevation.flys.model.RiverAxis; |
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24 |
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25 import de.intevation.flys.artifacts.FLYSArtifact; |
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26 import de.intevation.flys.artifacts.context.FLYSContext; |
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27 import de.intevation.flys.artifacts.model.WMSLayerFacet; |
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28 import de.intevation.flys.artifacts.resources.Resources; |
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29 import de.intevation.flys.artifacts.states.DefaultState.ComputeType; |
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30 import de.intevation.flys.utils.GeometryUtils; |
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31 |
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32 |
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33 public class RiverAxisState extends OutputState { |
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34 |
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35 public static final String I18N_DESCRIPTION = "floodmap.riveraxis"; |
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36 |
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37 public static final String WMS_LAYER_NAME = "riveraxis"; |
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38 |
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39 public static final String XPATH_RIVER_PROJECTION = |
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40 "/artifact-database/floodmap/river[@name=$name]/srid/@value"; |
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41 |
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42 |
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43 private static final Logger logger = Logger.getLogger(RiverAxisState.class); |
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44 |
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45 |
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46 @Override |
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47 public Object computeInit( |
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48 FLYSArtifact artifact, |
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49 String hash, |
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50 Object context, |
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51 CallMeta meta, |
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52 List<Facet> facets |
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53 ) { |
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54 logger.debug("RiverAxisState.computeInit()"); |
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55 |
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56 FLYSContext flysContext = null; |
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57 |
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58 if (context instanceof FLYSContext) { |
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59 flysContext = (FLYSContext) context; |
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60 } |
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61 else { |
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62 flysContext = (FLYSContext) ((CallContext) context).globalContext(); |
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63 } |
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64 |
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65 Map<String, String> wms = (Map<String, String>) |
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66 flysContext.get(FLYSContext.RIVER_WMS); |
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67 |
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68 String river = artifact.getDataAsString("river"); |
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69 |
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70 if(river == null || river.length() == 0) { |
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71 logger.warn("No river found in the current parameterization."); |
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72 return null; |
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73 } |
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74 |
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75 String url = wms.get(river); |
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76 |
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77 // TODO Add config for background layer |
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78 WMSLayerFacet facet = new WMSLayerFacet( |
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79 0, |
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80 FLOODMAP_RIVERAXIS, |
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81 Resources.getMsg(meta, I18N_DESCRIPTION, I18N_DESCRIPTION), |
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82 ComputeType.INIT, |
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83 getID(), hash, |
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84 url); |
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85 |
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86 facet.addLayer(WMS_LAYER_NAME); |
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87 |
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88 RiverAxis axis = RiverAxis.getRiverAxis(river); |
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89 if (axis != null) { |
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90 // TODO Take the correct EPSG into account. Maybe, we need to |
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91 // reproject the geometry. |
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92 Geometry geom = axis.getGeom().getBoundary(); |
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93 String bounds = GeometryUtils.jtsBoundsToOLBounds(geom); |
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94 |
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95 logger.debug("River '" + river + "' bounds: " + bounds); |
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96 |
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97 facet.setExtent(bounds); |
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98 } |
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99 |
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100 Map<String, String> variables = new HashMap<String, String>(1); |
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101 variables.put("name", river); |
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102 |
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103 Document cfg = Config.getConfig(); |
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104 |
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105 String srid = (String) XMLUtils.xpath( |
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106 cfg, |
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107 XPATH_RIVER_PROJECTION, |
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108 XPathConstants.STRING, |
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109 null, |
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110 variables); |
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111 |
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112 facet.setSrid(srid); |
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113 |
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114 facets.add(facet); |
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115 |
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116 return null; |
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117 } |
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118 } |
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119 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |