Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/SedimentLoadData.java @ 8041:01ad09af0975
Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Wed, 16 Jul 2014 17:09:02 +0200 |
parents | f1500a524b76 |
children | 86fa217c24d5 |
rev | line source |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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1 /* Copyright (C) 2014 by Bundesanstalt für Gewässerkunde |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
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6 * documentation coming with Dive4Elements River for details. |
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New way to loaded sediment loads from database and cache it. The data structure a way more straight forward. TODO: Implement calculation on this basis.
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7 */ |
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8 package org.dive4elements.river.artifacts.model.minfo; |
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9 |
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10 import java.io.Serializable; |
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11 import java.util.ArrayList; |
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Wire the neighbors to the measurement stations together. This eases the lookup for same types (suspended or bed load).
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12 import java.util.Collection; |
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13 import java.util.Collections; |
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14 import java.util.Date; |
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15 import java.util.List; |
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16 import java.util.TreeMap; |
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17 |
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18 import org.dive4elements.river.utils.EpsilonComparator; |
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19 |
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20 public class SedimentLoadData implements Serializable |
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21 { |
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22 public static final int GF_UNKNOWN = -1; |
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23 public static final int GF_COARSE = 0; |
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24 public static final int GF_FINE_MIDDLE = 1; |
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25 public static final int GF_SAND = 2; |
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26 public static final int GF_SUSP_SAND = 3; |
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27 public static final int GF_SUSP_SAND_BED = 4; |
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28 public static final int GF_SUSP_SEDIMENT = 5; |
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29 public static final int GF_TOTAL = 6; |
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30 public static final int GF_BED_LOAD = 7; |
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31 public static final int GF_SUSPENDED_LOAD = 8; |
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32 public static final int GF_MAX = 8; |
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33 |
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34 public static final int grainFractionIndex(String name) { |
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35 if ("coarse".equals(name)) return GF_COARSE; |
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36 if ("fine_middle".equals(name)) return GF_FINE_MIDDLE; |
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37 if ("sand".equals(name)) return GF_SAND; |
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38 if ("susp_sand".equals(name)) return GF_SUSP_SAND; |
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39 if ("susp_sand_bed".equals(name)) return GF_SUSP_SAND_BED; |
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40 if ("suspended_sediment".equals(name)) return GF_SUSP_SEDIMENT; |
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41 if ("total".equals(name)) return GF_TOTAL; |
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42 if ("bed_load".equals(name)) return GF_BED_LOAD; |
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43 if ("suspended_load".equals(name)) return GF_SUSPENDED_LOAD; |
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44 return GF_UNKNOWN; |
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45 } |
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46 |
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47 public interface Visitor { |
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48 void visit(Station station); |
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49 } |
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parents:
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50 |
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51 public static class Value implements Serializable { |
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52 |
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53 public interface Filter { |
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54 boolean accept(Value value); |
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55 } |
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56 |
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57 private double value; |
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58 |
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59 private Load load; |
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60 |
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61 public Value() { |
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62 } |
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63 |
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64 public Value(Load load, double value) { |
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65 this.load = load; |
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66 this.value = value; |
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67 } |
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68 |
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69 public double getValue() { |
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70 return value; |
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71 } |
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72 |
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73 public Load getLoad() { |
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74 return load; |
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75 } |
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76 } // class Value |
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77 |
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78 |
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79 public static class Load implements Serializable { |
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81 private int id; |
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82 |
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83 private String description; |
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84 |
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85 private Date startTime; |
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86 private Date stopTime; |
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87 |
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88 public Load() { |
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89 } |
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90 |
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91 public Load(int id, String description, Date startTime, Date stopTime) { |
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92 this.id = id; |
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93 this.description = description; |
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94 this.startTime = startTime; |
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95 this.stopTime = stopTime; |
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96 } |
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97 |
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98 public int getId() { |
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99 return id; |
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100 } |
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101 |
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102 public String getDescription() { |
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103 return description; |
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104 } |
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105 |
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106 public Date getStartTime() { |
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107 return startTime; |
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108 } |
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109 |
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110 public Date getStopTime() { |
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111 return stopTime; |
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112 } |
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113 |
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114 public boolean isEpoch() { |
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115 return startTime != null && stopTime != null; |
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116 } |
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117 } // class SedimentLoad |
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118 |
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119 public static class Station implements Serializable { |
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120 |
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121 public static final int BED_LOAD = 0; |
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122 public static final int SUSPENDED = 1; |
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123 |
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124 private double station; |
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125 |
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126 private int type; |
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127 |
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128 private List<List<Value>> grainFractions; |
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129 |
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130 private Station next; |
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131 private Station prev; |
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132 |
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133 private Station chain; |
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134 |
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135 public Station() { |
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136 this(BED_LOAD, 0.0); |
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137 } |
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138 |
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139 public Station(int type, double station) { |
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140 grainFractions = new ArrayList<List<Value>>(GF_MAX+1); |
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141 for (int i = 0; i < GF_MAX+1; ++i) { |
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142 grainFractions.add(null); |
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143 } |
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144 this.type = type; |
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145 this.station = station; |
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146 } |
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147 |
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148 public double getStation() { |
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149 return station; |
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150 } |
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151 |
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152 public int getType() { |
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153 return type; |
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154 } |
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155 |
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156 public void setNext(Station next) { |
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157 this.next = next; |
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158 } |
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159 |
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160 public Station getNext() { |
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161 return next; |
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162 } |
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163 |
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164 public void setPrev(Station prev) { |
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165 this.prev = next; |
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166 } |
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167 |
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168 public Station getPrev() { |
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169 return prev; |
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170 } |
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171 |
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172 public Station getNext(boolean isKMUp) { |
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173 return isKMUp ? getNext() : getPrev(); |
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174 } |
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175 |
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176 public Station getPrev(boolean isKMUp) { |
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177 return isKMUp ? getPrev() : getNext(); |
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178 } |
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179 |
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180 public Station nextChain() { |
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181 return chain; |
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182 } |
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183 |
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184 public void append(Station station) { |
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185 station.chain = chain; |
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186 chain = station; |
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187 } |
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188 |
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189 public void addValue(int grainFraction, Value value) { |
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190 List<Value> values = grainFractions.get(grainFraction); |
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191 if (values == null) { |
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192 values = new ArrayList<Value>(); |
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193 grainFractions.set(grainFraction, values); |
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194 } |
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195 values.add(value); |
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196 } |
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197 |
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198 public boolean hasGrainFraction(String grainFraction) { |
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199 return hasGrainFraction(grainFractionIndex(grainFraction)); |
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200 } |
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201 |
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202 public boolean hasGrainFraction(int grainFraction) { |
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203 List<Value> values = grainFractions.get(grainFraction); |
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204 return values != null && !values.isEmpty(); |
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205 } |
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206 |
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207 public List<Value> filterGrainFraction(int grainFraction, Value.Filter filter) { |
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208 List<Value> values = grainFractions.get(grainFraction); |
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209 if (values == null || values.isEmpty()) { |
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210 return Collections.<Value>emptyList(); |
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211 } |
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212 List<Value> result = new ArrayList<Value>(values.size()); |
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213 for (Value value: values) { |
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214 if (filter.accept(value)) { |
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215 result.add(value); |
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216 } |
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217 } |
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218 return result; |
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219 } |
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220 |
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221 public double findValueByLoadId(int id) { |
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222 for (List<Value> values: grainFractions) { |
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223 double value = findValueByLoadId(values, id); |
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224 if (!Double.isNaN(value)) { |
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225 return value; |
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226 } |
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227 } |
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228 return Double.NaN; |
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229 } |
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230 |
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231 private static final double findValueByLoadId( |
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232 List<Value> values, |
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233 int id |
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234 ) { |
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235 if (values == null) { |
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236 return Double.NaN; |
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237 } |
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238 // List is ordered by station id -> binary search. |
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239 int lo = 0, hi = values.size()-1; |
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240 while (lo <= hi) { |
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241 int mid = (lo + hi)/2; |
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242 Value v = values.get(mid); |
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243 int xid = v.getLoad().getId(); |
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244 if (xid < id) hi = mid-1; |
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245 else if (xid > id) lo = mid+1; |
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246 else return v.getValue(); |
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247 } |
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248 |
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249 return Double.NaN; |
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250 } |
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251 |
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252 public Station firstOfType(int type) { |
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253 for (Station curr = this; curr != null; curr = curr.chain) { |
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254 if (curr.getType() == type) { |
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255 return curr; |
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256 } |
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257 } |
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258 return null; |
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259 } |
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260 } // class Station |
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261 |
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262 |
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263 private Station [] stations; |
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264 |
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265 public SedimentLoadData() { |
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266 } |
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267 |
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268 public SedimentLoadData(Collection<Station> stations) { |
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269 setStations(stations); |
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270 } |
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271 |
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272 public void setStations(Collection<Station> stations) { |
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273 TreeMap<Double, Station> same = |
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274 new TreeMap<Double, Station>(EpsilonComparator.CMP); |
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275 |
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276 for (Station station: stations) { |
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277 Double key = station.getStation(); |
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278 Station st = same.get(key); |
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279 if (st == null) { |
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280 same.put(key, station); |
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281 } else { |
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282 st.append(station); |
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283 } |
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284 } |
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285 this.stations = new Station[same.size()]; |
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286 int i = 0; |
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287 for (Station station: same.values()) { |
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288 this.stations[i++] = station; |
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289 } |
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290 wireNeighbors(); |
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291 } |
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292 |
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293 private void wireNeighbors() { |
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294 for (int i = 0, N = stations.length; i < N-1; ++i) { |
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295 for (Station curr = stations[i]; curr != null; curr = curr.nextChain()) { |
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296 int type = curr.getType(); |
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297 NEXT: for (int j = i+1; j < N; ++j) { |
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298 Station next = stations[j].firstOfType(type); |
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299 if (next != null) { |
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300 curr.setNext(next); |
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301 next.setPrev(curr); |
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302 break NEXT; |
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303 } |
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304 } |
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305 } |
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306 } |
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307 } |
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308 |
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309 private void recursiveFindStations( |
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310 double a, double b, |
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311 int lo, int hi, |
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312 Visitor visitor |
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313 ) { |
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314 while (lo >= hi) { |
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315 int mid = (lo+hi)/2; |
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316 Station st = stations[mid]; |
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317 double station = st.getStation(); |
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318 if (station < a) { |
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319 hi = mid-1; |
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320 } else if (station > b) { |
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321 lo = mid+1; |
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322 } else { |
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323 recursiveFindStations(a, b, lo, mid-1, visitor); |
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324 visitor.visit(st); |
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325 lo = mid+1; |
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326 } |
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327 } |
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328 } |
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329 |
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330 public void findStations(double a, double b, Visitor visitor) { |
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331 if (a > b) { |
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332 double t = a; a = b; b = t; |
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333 } |
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334 recursiveFindStations(a, b, 0, stations.length-1, visitor); |
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335 } |
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336 |
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337 public List<Station> findStations(double a, double b) { |
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338 final List<Station> result = new ArrayList<Station>(); |
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339 findStations(a, b, new Visitor() { |
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340 @Override |
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341 public void visit(Station station) { |
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342 result.add(station); |
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343 } |
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344 }); |
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345 return result; |
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346 } |
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347 } |
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348 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |