Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/ManualPointsArtifact.java @ 4255:670e98f5a441

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Fixed leak while merging facets. The ThemeList that is used by OutputHelper to sort the Facets for an Output now uses a list to store the ManagedFacets. The correct order is made up by sorting the List using Collections.sort() function of the Java JDK. Therfore, the ManagedFacet class implements the Comparable interface. The return value of its compareTo(other) method depends on the value of the 'position' field.
author Ingo Weinzierl <weinzierl.ingo@googlemail.com>
date Thu, 25 Oct 2012 14:01:46 +0200
parents 066e2b4d69ca
children 6153c50f78cf
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.CallMeta;
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16 import de.intevation.flys.artifacts.geom.Lines;
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17 import de.intevation.flys.artifacts.model.FacetTypes;
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18 import de.intevation.flys.artifacts.states.DefaultState;
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19 import de.intevation.flys.model.FastCrossSectionLine;
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20
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21
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22 /**
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23 * Artifact to store user-added points and water lines.
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24 */
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25 public class ManualPointsArtifact
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26 extends StaticFLYSArtifact
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27 implements FacetTypes, WaterLineArtifact
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28 {
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29 private static final long serialVersionUID = 7096025125474986011L;
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30
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31 /** The logger for this class. */
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32 private static Logger logger = Logger.getLogger(ManualPointsArtifact.class);
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33
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34 /** The name of the artifact. */
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35 public static final String ARTIFACT_NAME = "manualpoints";
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36
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37
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38 public ManualPointsArtifact() {
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39 logger.debug("ManualPointsArtifact.ManualPointsArtifact()");
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40 }
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41
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42
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43 /**
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44 * Gets called from factory to set things up.
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45 */
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46 @Override
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47 public void setup(
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48 String identifier,
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49 ArtifactFactory factory,
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50 Object context,
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51 CallMeta callMeta,
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52 Document data)
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53 {
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54 logger.debug("ManualPointsArtifact.setup");
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55 super.setup(identifier, factory, context, callMeta, data);
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56 initialize(null, context, callMeta);
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57 }
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58
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59
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60 /** Return the name of this artifact. */
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61 @Override
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62 public String getName() {
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63 return ARTIFACT_NAME;
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64 }
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65
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66
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67 /** Access state data storing the jsonstring with points. */
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68 public String getPointsData(String facetName) {
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69 return getDataAsString(facetName + ".data");
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70 }
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71
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72
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73 /**
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74 * Access state data storing the jsonstring with lines.
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75 * @param facetName Name of facet or null if the so far
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76 * only known case should be picked.
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77 * @return (String) value of data element (expect json).
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78 */
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79 public String getLinesData(String facetName) {
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80 if (facetName == null)
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81 return getDataAsString("cross_section.manualpoints.lines");
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82 // TODO .lineS?
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83 return getDataAsString(facetName + ".line");
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84 }
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85
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86
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87 /** Setup state and facet. */
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88 @Override
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89 protected void initialize(Artifact artifact, Object context, CallMeta meta) {
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90 logger.debug("ManualPointsArtifact.initialize");
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91 List<Facet> fs = new ArrayList<Facet>();
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92
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93 DefaultState state = (DefaultState) getCurrentState(context);
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94 state.computeInit(this, hash(), context, meta, fs);
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95 if (!fs.isEmpty()) {
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96 logger.debug("Facets to add in ManualPointsArtifact.initialize .");
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97 facets.put(getCurrentStateId(), fs);
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98 }
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99 else {
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100 logger.debug("No facets to add in ManualPointsArtifact.initialize ("
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101 + state.getID() + ").");
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102 }
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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 * Get value of line at index.
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108 * @param index index in json array defining lines.
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109 * @return water height of line at given index.
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110 */
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111 protected double getLine(int index) {
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112 try {
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113 JSONArray lines = new JSONArray(getLinesData(null));
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114 JSONArray array = lines.getJSONArray(index);
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115
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116 return array.getDouble(0);
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117 }
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118 catch(JSONException e){
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119 logger.error("Could not decode json for line.");
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120 return 0d;
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121 }
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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 * Get the water line "surface".
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127 * @param index index of facets data.
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128 * @param csl 'ground' against which to determine water surface.
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129 * @param a (ignored in this implementation).
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130 * @param b (ignored in this implementation).
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131 */
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132 @Override
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133 public Lines.LineData getWaterLines(
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134 int index,
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135 FastCrossSectionLine csl,
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136 double a, double b
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137 ) {
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138 List<Point2D> points = csl.getPoints();
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139 return Lines.createWaterLines(points, getLine(index));
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140 }
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141 }
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142 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org