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annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/CrossSectionWaterLineFacet.java @ 4506:719680a282e5

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CrossSectionWaterLineFacet: Guard class cast.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 14 Nov 2012 12:25:13 +0100
parents 6153c50f78cf
children
rev   line source
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1 package de.intevation.flys.artifacts.model;
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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 java.util.List;
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6
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7 import de.intevation.artifacts.Artifact;
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8 import de.intevation.artifacts.CallContext;
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9 import de.intevation.artifacts.DataProvider;
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10
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11 import de.intevation.artifactdatabase.state.Facet;
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12
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bf62cc7052d4 Implement and use WaterLineArtifact interface.
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13 import de.intevation.flys.artifacts.WaterLineArtifact;
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14
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15 import de.intevation.flys.model.FastCrossSectionLine;
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16
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ed07dd55f487 Fixed various bugs (package declarations, moved classes to correct places).
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17 import de.intevation.flys.artifacts.geom.Lines;
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19
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20 /**
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21 * Facet for Waterlines in Cross Sections.
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22 */
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23 public class CrossSectionWaterLineFacet
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24 extends BlackboardDataFacet
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25 implements FacetTypes {
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26
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27 /** Private logger to use. */
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28 private static Logger logger =
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29 Logger.getLogger(CrossSectionWaterLineFacet.class);
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30
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31
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32 /** Trivial constructor, set (maybe localized) description. */
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33 public CrossSectionWaterLineFacet(int idx, String description) {
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34 super(idx, CROSS_SECTION_WATER_LINE, description);
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35 }
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36
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37
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38 /**
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39 * Trivial constructor, set (maybe localized) description.
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40 * @param idx Index of this facet.
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41 * @param name 'type' of this facet.
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42 * @param description (maybe) localized user-visible description.
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43 */
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44 public CrossSectionWaterLineFacet(int idx, String name, String description) {
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45 super(idx, name, description);
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46 }
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47
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48
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49 /**
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50 * Gets waterline (crossed with cross section) of waterlevel.
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51 */
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52 public Object getData(Artifact artifact, CallContext context) {
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53 logger.debug("Get data for cross section water line");
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54
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55 List<DataProvider> providers = context.
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56 getDataProvider(CrossSectionFacet.BLACKBOARD_CS_MASTER_DATA);
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57 if (providers.size() < 1) {
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58 logger.warn("Could not find Cross-Section data provider.");
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59 return new Lines.LineData(new double[][] {}, 0d, 0d);
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60 }
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61
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62 Object crossSection = providers.get(0)
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63 .provideData(CrossSectionFacet.BLACKBOARD_CS_MASTER_DATA,
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64 null, context);
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65 Object nextKm = providers.get(0).
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66 provideData(CrossSectionFacet.BLACKBOARD_CS_NEXT_KM, null, context);
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67 Object prevKm = providers.get(0).
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68 provideData(CrossSectionFacet.BLACKBOARD_CS_PREV_KM, null, context);
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69 if (prevKm == null)
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70 prevKm = new Double(-1d);
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71 if (nextKm == null)
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72 nextKm = new Double(-1d);
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73
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74 if (!(artifact instanceof WaterLineArtifact)) {
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75 logger.error("CrossSectionWaterLineFacet needs WaterLineArtifact");
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76 return new Lines.LineData(new double[][] {}, 0d,0d);
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77 }
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78 WaterLineArtifact lineArtifact = (WaterLineArtifact) artifact;
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79
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80 if (crossSection != null) {
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81 return lineArtifact.getWaterLines(this.getIndex(),
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82 (FastCrossSectionLine) crossSection, (Double) nextKm,
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83 (Double) prevKm, context);
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84 }
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85 else {
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86 return new Lines.LineData(new double[][] {}, 0d,0d);
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87 }
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88 }
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89
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90
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91 /** Do a deep copy. */
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92 @Override
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93 public Facet deepCopy() {
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94 CrossSectionWaterLineFacet copy = new CrossSectionWaterLineFacet(
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95 this.getIndex(),
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96 this.description);
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97 copy.set(this);
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98 return copy;
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99 }
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100 }
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101 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org