Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/ManualPointsArtifact.java @ 3743:51f76225823b

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Extreme waterlevels: calculate the segments for Q km ranges. flys-artifacts/trunk@5426 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 10 Sep 2012 15:59:34 +0000
parents afc7bfb4800b
children 066e2b4d69ca
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.util.ArrayList;
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4 import java.util.List;
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5
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6 import java.awt.geom.Point2D;
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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 org.w3c.dom.Document;
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11
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12 import org.json.JSONArray;
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13 import org.json.JSONException;
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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.artifacts.Artifact;
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18 import de.intevation.artifacts.ArtifactFactory;
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19 import de.intevation.artifacts.CallMeta;
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20
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21 import de.intevation.flys.artifacts.model.FacetTypes;
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22
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23 import de.intevation.flys.artifacts.states.DefaultState;
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24
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25 import de.intevation.flys.model.FastCrossSectionLine;
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26
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27 import de.intevation.flys.artifacts.geom.Lines;
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28
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29
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30 /**
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31 * Artifact to store user-added points and water lines.
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32 */
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33 public class ManualPointsArtifact
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34 extends StaticFLYSArtifact
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35 implements FacetTypes, WaterLineArtifact
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36 {
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37 /** The logger for this class. */
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38 private static Logger logger = Logger.getLogger(ManualPointsArtifact.class);
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39
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40 /** The name of the artifact. */
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41 public static final String ARTIFACT_NAME = "manualpoints";
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42
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43
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44 /**
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45 * Trivial Constructor.
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46 */
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47 public ManualPointsArtifact() {
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48 logger.debug("ManualPointsArtifact.ManualPointsArtifact()");
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49 }
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50
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51
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52 /**
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53 * Gets called from factory, to set things up.
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54 */
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55 @Override
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56 public void setup(
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57 String identifier,
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58 ArtifactFactory factory,
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59 Object context,
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60 CallMeta callMeta,
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61 Document data)
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62 {
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63 logger.debug("ManualPointsArtifact.setup");
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64 super.setup(identifier, factory, context, callMeta, data);
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65 initialize(null, context, callMeta);
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66 }
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67
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68
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69 /** Return the name of this artifact. */
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70 public String getName() {
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71 return ARTIFACT_NAME;
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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 points. */
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76 public String getPointsData(String facetName) {
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77 return getDataAsString(facetName + ".data");
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78 }
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79
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80
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81 /**
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82 * Access state data storing the jsonstring with lines.
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83 * @param facetName Name of facet or null if the so far
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84 * only known case should be picked.
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85 * @return (String) value of data element (expect json).
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86 */
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87 public String getLinesData(String facetName) {
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88 if (facetName == null)
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89 return getDataAsString("cross_section.manualpoints.lines");
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90 // TODO .lineS?
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91 return getDataAsString(facetName + ".line");
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92 }
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93
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94
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95 /** Setup state and facet. */
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96 @Override
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97 protected void initialize(Artifact artifact, Object context, CallMeta meta) {
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98 logger.debug("ManualPointsArtifact.initialize");
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99 List<Facet> fs = new ArrayList<Facet>();
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100
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101 DefaultState state = (DefaultState) getCurrentState(context);
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102 state.computeInit(this, hash(), context, meta, fs);
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103 if (!fs.isEmpty()) {
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104 logger.debug("Facets to add in ManualPointsArtifact.initialize .");
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105 facets.put(getCurrentStateId(), fs);
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106 }
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107 else {
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108 logger.debug("No facets to add in ManualPointsArtifact.initialize ("
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109 + state.getID() + ").");
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110 }
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111 }
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112
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113
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114 /**
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115 * Get value of line at index.
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116 * @param index index in json array defining lines.
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117 * @return water height of line at given index.
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118 */
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119 protected double getLine(int index) {
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120 try {
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121 JSONArray lines = new JSONArray((String) getLinesData(null));
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122 JSONArray array = lines.getJSONArray(index);
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123
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124 return array.getDouble(0);
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125 }
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126 catch(JSONException e){
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127 logger.error("Could not decode json for line.");
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128 return 0d;
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129 }
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130 }
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131
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132
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133 /**
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134 * Get the water line "surface".
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135 * @param index index of facets data.
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136 * @param csl 'ground' against which to determine water surface.
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137 * @param a (ignored in this implementation).
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138 * @param b (ignored in this implementation).
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139 */
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140 @Override
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141 public Lines.LineData getWaterLines(
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142 int index,
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143 FastCrossSectionLine csl,
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144 double a, double b
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145 ) {
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146 List<Point2D> points = csl.getPoints();
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147 return Lines.createWaterLines(points, getLine(index));
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148 }
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149 }
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150 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org