Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/RiverAxisState.java @ 1052:eeebf8514c7f

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The boundary (extent) for the river axis is determined based on its geometry - this extent is written into the wms facet. flys-artifacts/trunk@2514 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 19 Aug 2011 15:52:03 +0000
parents ae198bef4ba0
children c37084f31c84
rev   line source
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796c54058dc4 Added artifacts/states for WMS background an river axis and a configuration for the output-defaults.
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1 package de.intevation.flys.artifacts.states;
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2
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3 import java.util.List;
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4 import java.util.Map;
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5
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6 import com.vividsolutions.jts.geom.Geometry;
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7
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8 import org.apache.log4j.Logger;
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9
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10 import de.intevation.artifacts.CallContext;
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11 import de.intevation.artifacts.CallMeta;
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12
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13 import de.intevation.artifacts.common.utils.Config;
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14
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15 import de.intevation.artifactdatabase.state.Facet;
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16
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17 import de.intevation.flys.model.RiverAxis;
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18
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19 import de.intevation.flys.artifacts.FLYSArtifact;
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20 import de.intevation.flys.artifacts.context.FLYSContext;
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21 import de.intevation.flys.artifacts.model.WMSLayerFacet;
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22 import de.intevation.flys.artifacts.resources.Resources;
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23 import de.intevation.flys.artifacts.states.DefaultState.ComputeType;
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24 import de.intevation.flys.utils.GeometryUtils;
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25
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26
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27 public class RiverAxisState extends OutputState {
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28
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29 public static final String I18N_DESCRIPTION = "floodmap.riveraxis";
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31 public static final String WMS_LAYER_NAME = "riveraxis";
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32
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33 public static final String XPATH_RIVER_PROJECTION =
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34 "/artifact-database/floodmap/river-wms[@river='%RIVER%']/@srid";
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35
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36
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37 private static final Logger logger = Logger.getLogger(RiverAxisState.class);
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38
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39
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40 @Override
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41 public Object computeInit(
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42 FLYSArtifact artifact,
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43 String hash,
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44 Object context,
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45 CallMeta meta,
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46 List<Facet> facets
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47 ) {
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48 logger.debug("RiverAxisState.computeInit()");
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49
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50 FLYSContext flysContext = null;
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51
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52 if (context instanceof FLYSContext) {
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53 flysContext = (FLYSContext) context;
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54 }
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55 else {
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56 flysContext = (FLYSContext) ((CallContext) context).globalContext();
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57 }
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58
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59 Map<String, String> wms = (Map<String, String>)
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60 flysContext.get(FLYSContext.RIVER_WMS);
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61
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62 String river = artifact.getDataAsString("river");
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63
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64 if(river == null || river.length() == 0) {
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65 logger.warn("No river found in the current parameterization.");
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66 return null;
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67 }
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68
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69 String url = wms.get(river);
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70
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71 // TODO Add config for background layer
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72 WMSLayerFacet facet = new WMSLayerFacet(
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73 0,
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74 FLOODMAP_RIVERAXIS,
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75 Resources.getMsg(meta, I18N_DESCRIPTION, I18N_DESCRIPTION),
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76 ComputeType.INIT,
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77 getID(), hash,
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78 url);
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79
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80 facet.addLayer(WMS_LAYER_NAME);
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81
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82 RiverAxis axis = RiverAxis.getRiverAxis(river);
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83 if (axis != null) {
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84 // TODO Take the correct EPSG into account. Maybe, we need to
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85 // reproject the geometry.
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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
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91 facet.setExtent(bounds);
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92 }
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93
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94 String xpath = XPATH_RIVER_PROJECTION.replace("%RIVER%", river);
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95 String srid = Config.getStringXPath(xpath);
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96 facet.setSrid(srid);
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97
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98 facets.add(facet);
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99
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100 return null;
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101 }
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102 }
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103 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org