Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/RelativePointFacet.java @ 4660:bb9ce9aece70

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Add new method hasItems to Collection class
author Björn Ricks <bjoern.ricks@intevation.de>
date Tue, 11 Dec 2012 16:24:57 +0100
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