Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/ManualPointsArtifact.java @ 4873:2b371e42a9af

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Add HWS Lines parameters and ogr_connection example
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 25 Jan 2013 10:34:47 +0100
parents a2735a4bf75e
children
rev   line source
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1 package de.intevation.flys.artifacts;
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2
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3 import java.awt.geom.Point2D;
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4 import java.util.ArrayList;
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5 import java.util.List;
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6
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7 import org.apache.log4j.Logger;
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8 import org.json.JSONArray;
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9 import org.json.JSONException;
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10 import org.w3c.dom.Document;
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11
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12 import de.intevation.artifactdatabase.state.Facet;
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13 import de.intevation.artifacts.Artifact;
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14 import de.intevation.artifacts.ArtifactFactory;
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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 import de.intevation.flys.artifacts.geom.Lines;
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18 import de.intevation.flys.artifacts.model.FacetTypes;
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19 import de.intevation.flys.artifacts.states.DefaultState;
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20 import de.intevation.flys.model.FastCrossSectionLine;
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21
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22
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23 /**
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24 * Artifact to store user-added points and water lines.
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25 */
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26 public class ManualPointsArtifact
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27 extends StaticFLYSArtifact
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28 implements FacetTypes, WaterLineArtifact
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29 {
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30 private static final long serialVersionUID = 7096025125474986011L;
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31
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32 /** The logger for this class. */
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33 private static Logger logger = Logger.getLogger(ManualPointsArtifact.class);
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34
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35 /** The name of the artifact. */
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36 public static final String ARTIFACT_NAME = "manualpoints";
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37
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38
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39 public ManualPointsArtifact() {
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40 logger.debug("ManualPointsArtifact.ManualPointsArtifact()");
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41 }
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42
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43
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44 /**
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45 * Gets called from factory to set things up.
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46 */
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47 @Override
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48 public void setup(
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49 String identifier,
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50 ArtifactFactory factory,
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51 Object context,
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52 CallMeta callMeta,
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53 Document data)
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54 {
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55 logger.debug("ManualPointsArtifact.setup");
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56 super.setup(identifier, factory, context, callMeta, data);
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57 initialize(null, context, callMeta);
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58 }
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59
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60
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61 /** Return the name of this artifact. */
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62 @Override
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63 public String getName() {
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64 return ARTIFACT_NAME;
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65 }
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66
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67
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68 /** Access state data storing the jsonstring with points. */
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69 public String getPointsData(String facetName) {
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70 return getDataAsString(facetName + ".data");
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71 }
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72
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73
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74 /**
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75 * Access state data storing the jsonstring with lines.
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76 * @param facetName Name of facet or null if the so far
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77 * only known case should be picked.
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78 * @return (String) value of data element (expect json).
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79 */
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80 public String getLinesData(String facetName) {
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81 if (facetName == null)
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82 return getDataAsString("cross_section.manualpoints.lines");
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83 // TODO .lineS?
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84 return getDataAsString(facetName + ".line");
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85 }
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86
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87
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88 /** Setup state and facet. */
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89 @Override
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90 protected void initialize(Artifact artifact, Object context, CallMeta meta) {
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91 logger.debug("ManualPointsArtifact.initialize");
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92 List<Facet> fs = new ArrayList<Facet>();
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93
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94 DefaultState state = (DefaultState) getCurrentState(context);
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95 state.computeInit(this, hash(), context, meta, fs);
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96 if (!fs.isEmpty()) {
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97 logger.debug("Facets to add in ManualPointsArtifact.initialize .");
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98 addFacets(getCurrentStateId(), fs);
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99 }
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100 else {
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101 logger.debug("No facets to add in ManualPointsArtifact.initialize ("
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102 + state.getID() + ").");
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103 }
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104 }
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105
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106
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107 /**
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108 * Get value of line at index.
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109 * @param index index in json array defining lines.
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110 * @return water height of line at given index.
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111 */
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112 protected double getLine(int index) {
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113 try {
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114 JSONArray lines = new JSONArray(getLinesData(null));
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115 JSONArray array = lines.getJSONArray(index);
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116
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117 return array.getDouble(0);
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118 }
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119 catch(JSONException e){
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120 logger.error("Could not decode json for line.");
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121 return 0d;
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122 }
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123 }
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124
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125
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126 /**
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127 * Get the water line "surface".
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128 * @param index index of facets data.
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129 * @param csl 'ground' against which to determine water surface.
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130 * @param a (ignored in this implementation).
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131 * @param b (ignored in this implementation).
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132 * @param context (ignored in this implementation).
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133 */
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134 @Override
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135 public Lines.LineData getWaterLines(
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136 int index,
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137 FastCrossSectionLine csl,
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138 double a, double b,
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139 CallContext context
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140 ) {
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141 List<Point2D> points = csl.getPoints();
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142 return Lines.createWaterLines(points, getLine(index));
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143 }
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144 }
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145 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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