Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/RelativePointFacet.java @ 4241:49cb65d5932d

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Improved the historical discharge calculation. The calculation now creates new HistoricalWQKms (new subclass of WQKms). Those WQKms are used to create new facets from (new) type 'HistoricalDischargeCurveFacet'. The chart generator is improved to support those facets.
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 24 Oct 2012 14:34:35 +0200
parents cd5eb8f5f6f1
children cce12c06466f
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 java.util.List;
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4 import java.awt.geom.Point2D;
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5
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6 import org.apache.log4j.Logger;
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7
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8 import de.intevation.artifacts.Artifact;
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9 import de.intevation.artifacts.CallContext;
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10 import de.intevation.artifacts.DataProvider;
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11
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12 import de.intevation.flys.artifacts.StaticWKmsArtifact;
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13 import de.intevation.flys.artifacts.math.Linear;
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14
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15 /**
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16 * Facet to access a point.
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17 */
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18 public class RelativePointFacet
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19 extends BlackboardDataFacet
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20 implements FacetTypes {
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21
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22 /** Own logger. */
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23 private static Logger logger = Logger.getLogger(RelativePointFacet.class);
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24
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25 /** Trivial Constructor. */
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26 public RelativePointFacet(String description) {
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27 this(RELATIVE_POINT, description);
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28 }
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29
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30
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31 public RelativePointFacet(String name, String description) {
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32 this.name = name;
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33 this.description = description;
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34 this.index = 0;
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35 }
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36
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37
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38 protected Point2D calculateDurationCurvePoint(CallContext context,
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39 StaticWKmsArtifact artifact)
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40 {
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41 // TODO here and in reference curve calc: Do warn if more than 1
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42 // provider found or (way better) handle it.
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43 Object wqdays = null;
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44 double km = 0d;
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45 List<DataProvider> providers = context.
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46 getDataProvider(DurationCurveFacet.BB_DURATIONCURVE);
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47 if (providers.size() < 1) {
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48 logger.warn("Could not find durationcurve data provider.");
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49 }
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50 else {
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51 wqdays = providers.get(0).provideData(
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52 DurationCurveFacet.BB_DURATIONCURVE,
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53 null,
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54 context);
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55 }
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56 List<DataProvider> kmproviders = context.
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57 getDataProvider(DurationCurveFacet.BB_DURATIONCURVE_KM);
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58 if (kmproviders.size() < 1) {
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59 logger.warn("Could not find durationcurve.km data provider.");
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60 }
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61 else {
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62 logger.debug("Found durationcurve.km data provider.");
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63 String dckm = providers.get(0).provideData(
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64 DurationCurveFacet.BB_DURATIONCURVE_KM,
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65 null,
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66 context).toString();
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67 km = Double.valueOf(dckm);
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68 }
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69
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70 if (wqdays != null) {
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71 // Which W at this km?
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72 double w = artifact.getWAtKmLin(artifact.getWKms(0), km);
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73 if (w == -1) {
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74 logger.warn("w is -1, already bad sign!");
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75 }
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76 // Where is this W passed by in the wq-curve?
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77 WQDay wqday = (WQDay) wqdays;
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78 // Doing a linear Day Of KM.
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79 int idx = 0;
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80 boolean wIncreases = wqday.getW(0) < wqday.getW(wqday.size()-1);
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81 if (wIncreases) {
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82 while (idx < wqday.size() && wqday.getW(idx) < w) {
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83 idx++;
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84 }
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85 }
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86 else {
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87 idx = wqday.size() -1;
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88 while (idx > 0 && wqday.getW(idx) > w) {
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89 idx--;
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90 }
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91 }
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92
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93 double day = 0d;
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94 int mod = (wIncreases) ? -1 : +1;
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95 if (idx != 0 && idx <= wqday.size()-1) {
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96 day = Linear.linear(w, wqday.getW(idx+mod), wqday.getW(idx),
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97 wqday.getDay(idx+mod), wqday.getDay(idx));
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98 }
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99
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100 return new Point2D.Double((double) day, w);
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101 }
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102 logger.warn("not wqkms / w / day found");
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103 // TODO better signal failure.
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104 return new Point2D.Double(0d, 0d);
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105 }
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106
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107
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108 /**
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109 * Calculate a reference curve point, that is, a point made of
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110 * the Ws from start and end km param of the reference curve.
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111 */
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112 public Point2D calculateReferenceCurvePoint(CallContext context,
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113 StaticWKmsArtifact artifact) {
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114 List<DataProvider> providers = context.
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115 getDataProvider(ReferenceCurveFacet.BB_REFERENCECURVE_STARTKM);
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116 if (providers.size() < 1) {
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117 logger.warn("Could not find reference curve startkm data provider.");
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118 }
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119
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120 Double start = (Double) providers.get(0).
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121 provideData(ReferenceCurveFacet.BB_REFERENCECURVE_STARTKM, null, context);
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122
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123 providers = context.
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124 getDataProvider(ReferenceCurveFacet.BB_REFERENCECURVE_ENDKMS);
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125 if (providers.size() < 1) {
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126 logger.warn("Could not find reference curve endkms data provider.");
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127 }
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128 double[] ends = (double[]) providers.get(0).
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129 provideData(ReferenceCurveFacet.BB_REFERENCECURVE_ENDKMS, null, context);
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130
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131 logger.debug("Got s " + start + " e " + ends);
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132 double startW = artifact.getWAtKmLin(artifact.getWKms(0), start.doubleValue());
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133 // TODO handle multiple ends.
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134 double endW = artifact.getWAtKmLin(artifact.getWKms(0), ends[0]);
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135 logger.debug("Gotw s " + startW + " e " + endW);
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136 return new Point2D.Double(startW, endW);
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137 }
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138
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139
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140 /**
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141 * Returns the data this facet requires.
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142 *
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143 * @param artifact the owner artifact.
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144 * @param context the CallContext (ignored).
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145 *
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146 * @return the data.
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147 */
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148 @Override
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149 public Object getData(Artifact artifact, CallContext context) {
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150 StaticWKmsArtifact staticData = (StaticWKmsArtifact) artifact;
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151 // Find out whether we live in a duration curve context, there we would
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152 // provide only a single point.
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153
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154 if (context.getDataProvider(
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155 DurationCurveFacet.BB_DURATIONCURVE_KM).size() > 0) {
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156 return calculateDurationCurvePoint(context, staticData);
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157 }
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158 else if (context.getDataProvider(
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159 ReferenceCurveFacet.BB_REFERENCECURVE_STARTKM).size() > 0) {
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160 return calculateReferenceCurvePoint(context, staticData);
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161 }
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162
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163 // TODO better signal failure.
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164 return new Point2D.Double(0d, 0d);
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165 }
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166
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167
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168 /**
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169 * Create a deep copy of this Facet.
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170 * @return a deep copy.
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171 */
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172 @Override
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173 public RelativePointFacet deepCopy() {
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174 RelativePointFacet copy = new RelativePointFacet(description);
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175 copy.set(this);
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176 return copy;
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177 }
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178 }
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179 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org