Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/SedimentLoadData.java @ 8044:86fa217c24d5

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Sediment load: Merge measurement stations if they have the same km. The chaining was too complicated to build algorithms on top of it.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 17 Jul 2014 07:45:14 +0200
parents 01ad09af0975
children c835f3cf098e
rev   line source
8033
5e3f4b4fcb28 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
5e3f4b4fcb28 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
5e3f4b4fcb28 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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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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12 import java.util.Collection;
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13 import java.util.Collections;
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14 import java.util.Comparator;
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15 import java.util.Date;
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16 import java.util.List;
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17 import java.util.TreeMap;
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18
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19 import org.dive4elements.river.utils.EpsilonComparator;
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20
5e3f4b4fcb28 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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21 public class SedimentLoadData implements Serializable
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22 {
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23 public static final int GF_UNKNOWN = -1;
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24 public static final int GF_COARSE = 0;
01ad09af0975 Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
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25 public static final int GF_FINE_MIDDLE = 1;
01ad09af0975 Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
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26 public static final int GF_SAND = 2;
01ad09af0975 Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
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27 public static final int GF_SUSP_SAND = 3;
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28 public static final int GF_SUSP_SAND_BED = 4;
01ad09af0975 Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
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29 public static final int GF_SUSP_SEDIMENT = 5;
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30 public static final int GF_TOTAL = 6;
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31 public static final int GF_BED_LOAD = 7;
01ad09af0975 Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
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32 public static final int GF_SUSPENDED_LOAD = 8;
01ad09af0975 Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
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33 public static final int GF_MAX = 8;
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34
5e3f4b4fcb28 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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35 public static final int grainFractionIndex(String name) {
5e3f4b4fcb28 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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36 if ("coarse".equals(name)) return GF_COARSE;
5e3f4b4fcb28 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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37 if ("fine_middle".equals(name)) return GF_FINE_MIDDLE;
5e3f4b4fcb28 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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38 if ("sand".equals(name)) return GF_SAND;
5e3f4b4fcb28 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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39 if ("susp_sand".equals(name)) return GF_SUSP_SAND;
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40 if ("susp_sand_bed".equals(name)) return GF_SUSP_SAND_BED;
5e3f4b4fcb28 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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41 if ("suspended_sediment".equals(name)) return GF_SUSP_SEDIMENT;
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42 if ("total".equals(name)) return GF_TOTAL;
01ad09af0975 Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
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43 if ("bed_load".equals(name)) return GF_BED_LOAD;
01ad09af0975 Sediment load: Recognize grain fractions 'total', 'bed_load' and 'suspended_load' from pre-calculations.
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44 if ("suspended_load".equals(name)) return GF_SUSPENDED_LOAD;
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3a769d5fb733 Use GF_UNKNOWN constant instead of -1 to identify unknown grain fractions.
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45 return GF_UNKNOWN;
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46 }
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47
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48 public interface Visitor {
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aa622bddfdac Directly chain stations with the same km position together. This ease some summations.
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49 void visit(Station station);
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50 }
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51
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52 public static class Value implements Serializable {
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53
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54 public interface Filter {
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55 boolean accept(Value value);
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56 }
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57
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58 private double value;
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59
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60 private Load load;
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61
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62 public Value() {
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63 }
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64
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65 public Value(Load load, double value) {
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66 this.load = load;
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67 this.value = value;
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68 }
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70 public double getValue() {
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71 return value;
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72 }
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74 public Load getLoad() {
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75 return load;
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76 }
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77 } // class Value
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80 public static class Load implements Serializable {
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82 private int id;
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84 private String description;
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86 private Date startTime;
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87 private Date stopTime;
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89 public Load() {
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90 }
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92 public Load(int id, String description, Date startTime, Date stopTime) {
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93 this.id = id;
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94 this.description = description;
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95 this.startTime = startTime;
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96 this.stopTime = stopTime;
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97 }
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99 public int getId() {
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100 return id;
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101 }
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102
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103 public String getDescription() {
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104 return description;
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105 }
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106
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107 public Date getStartTime() {
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108 return startTime;
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109 }
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110
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111 public Date getStopTime() {
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112 return stopTime;
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113 }
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114
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115 public boolean isEpoch() {
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116 return startTime != null && stopTime != null;
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117 }
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118 } // class SedimentLoad
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119
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120 public static class Station implements Serializable {
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121
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122 public static final int BED_LOAD = 1;
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123 public static final int SUSPENDED = 2;
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124
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125 private double station;
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126
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127 private int type;
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128
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129 private List<List<Value>> grainFractions;
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130
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131 private Station next;
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132 private Station prev;
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133
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134 public Station() {
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135 this(BED_LOAD, 0.0);
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136 }
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137
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138 public Station(int type, double station) {
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139 grainFractions = new ArrayList<List<Value>>(GF_MAX+1);
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140 for (int i = 0; i < GF_MAX+1; ++i) {
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141 grainFractions.add(null);
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142 }
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143 this.type = type;
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144 this.station = station;
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145 }
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146
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147 public double getStation() {
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148 return station;
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149 }
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150
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151 public int getType() {
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152 return type;
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153 }
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154
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155 public boolean isType(int type) {
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156 return (this.type & type) == type;
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157 }
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158
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159 public void setNext(Station next) {
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160 this.next = next;
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161 }
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162
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163 public Station getNext() {
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164 return next;
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165 }
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166
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167 public void setPrev(Station prev) {
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168 this.prev = next;
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169 }
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170
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171 public Station getPrev() {
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172 return prev;
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173 }
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174
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175 public Station getNext(boolean isKMUp) {
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176 return isKMUp ? getNext() : getPrev();
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177 }
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178
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179 public Station getPrev(boolean isKMUp) {
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180 return isKMUp ? getPrev() : getNext();
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181 }
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182
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183 public void merge(Station other) {
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184 this.type |= other.type;
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185 for (int i = 0, N = grainFractions.size(); i < N; ++i) {
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186 grainFractions.set(i,
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187 mergeValues(grainFractions.get(i), other.grainFractions.get(i)));
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188 }
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189 }
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190
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191 private static final Comparator<Value> ID_CMP = new Comparator<Value>() {
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192 @Override
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193 public int compare(Value a, Value b) {
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194 return a.getLoad().getId() - b.getLoad().getId();
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195 }
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196 };
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197
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198 private static List<Value> mergeValues(List<Value> a, List<Value> b) {
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199 if (a == null) return b;
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200 if (b == null) return a;
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201 a.addAll(b);
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202 // re-establish id order.
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203 Collections.sort(a, ID_CMP);
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204 return a;
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205 }
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206
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207 public Station nextByType(int type, boolean isKMUp) {
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208 for (Station curr = this; curr != null; curr = curr.getNext(isKMUp)) {
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209 if (curr.isType(type)) {
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210 return curr;
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211 }
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212 }
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213 return null;
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214 }
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215
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216 public Station prevByType(int type, boolean isKMUp) {
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217 for (Station curr = this; curr != null; curr = curr.getPrev(isKMUp)) {
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218 if (curr.isType(type)) {
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219 return curr;
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220 }
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221 }
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222 return null;
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223 }
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224
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225 public void addValue(int grainFraction, Value value) {
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226 List<Value> values = grainFractions.get(grainFraction);
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227 if (values == null) {
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228 values = new ArrayList<Value>();
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229 grainFractions.set(grainFraction, values);
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230 }
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231 values.add(value);
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232 }
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233
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234 public boolean hasGrainFraction(String grainFraction) {
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235 return hasGrainFraction(grainFractionIndex(grainFraction));
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236 }
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237
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238 public boolean hasGrainFraction(int grainFraction) {
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239 List<Value> values = grainFractions.get(grainFraction);
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240 return values != null && !values.isEmpty();
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241 }
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242
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243 public List<Value> filterGrainFraction(int grainFraction, Value.Filter filter) {
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244 List<Value> values = grainFractions.get(grainFraction);
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245 if (values == null || values.isEmpty()) {
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246 return Collections.<Value>emptyList();
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247 }
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248 List<Value> result = new ArrayList<Value>(values.size());
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249 for (Value value: values) {
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250 if (filter.accept(value)) {
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251 result.add(value);
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252 }
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253 }
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254 return result;
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255 }
8034
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256
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257 public double findValueByLoadId(int id) {
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258 for (List<Value> values: grainFractions) {
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259 double value = findValueByLoadId(values, id);
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260 if (!Double.isNaN(value)) {
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261 return value;
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262 }
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263 }
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264 return Double.NaN;
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265 }
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266
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267 private static final double findValueByLoadId(
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268 List<Value> values,
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269 int id
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270 ) {
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271 if (values == null) {
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272 return Double.NaN;
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273 }
8034
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diff changeset
274 // List is ordered by station id -> binary search.
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275 int lo = 0, hi = values.size()-1;
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diff changeset
276 while (lo <= hi) {
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277 int mid = (lo + hi)/2;
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278 Value v = values.get(mid);
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279 int xid = v.getLoad().getId();
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diff changeset
280 if (xid < id) hi = mid-1;
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diff changeset
281 else if (xid > id) lo = mid+1;
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282 else return v.getValue();
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283 }
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284
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285 return Double.NaN;
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286 }
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diff changeset
287 } // class Station
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288
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289
8040
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diff changeset
290 private Station [] stations;
8033
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291
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diff changeset
292 public SedimentLoadData() {
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293 }
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294
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295 public SedimentLoadData(Collection<Station> stations) {
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296 setStations(stations);
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297 }
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298
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299 public void setStations(Collection<Station> stations) {
8038
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300 TreeMap<Double, Station> same =
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diff changeset
301 new TreeMap<Double, Station>(EpsilonComparator.CMP);
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302
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303 for (Station station: stations) {
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304 Double key = station.getStation();
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diff changeset
305 Station st = same.get(key);
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diff changeset
306 if (st == null) {
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diff changeset
307 same.put(key, station);
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diff changeset
308 } else {
8044
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diff changeset
309 st.merge(station);
8034
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310 }
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diff changeset
311 }
8040
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diff changeset
312 this.stations = new Station[same.size()];
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313 int i = 0;
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314 for (Station station: same.values()) {
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315 this.stations[i++] = station;
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316 }
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317 wireNeighbors();
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318 }
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319
8034
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320 private void wireNeighbors() {
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321 for (int i = 1; i < stations.length; ++i) {
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322 stations[i-1].setNext(stations[i]);
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323 stations[i].setPrev(stations[i-1]);
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324 }
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325 }
8035
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326
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327 private void recursiveFindStations(
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328 double a, double b,
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329 int lo, int hi,
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330 Visitor visitor
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331 ) {
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332 while (lo >= hi) {
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333 int mid = (lo+hi)/2;
8040
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334 Station st = stations[mid];
8038
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335 double station = st.getStation();
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336 if (station < a) {
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337 hi = mid-1;
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338 } else if (station > b) {
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339 lo = mid+1;
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340 } else {
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341 recursiveFindStations(a, b, lo, mid-1, visitor);
8038
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342 visitor.visit(st);
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343 lo = mid+1;
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344 }
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345 }
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346 }
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347
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348 public void findStations(double a, double b, Visitor visitor) {
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349 if (a > b) {
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350 double t = a; a = b; b = t;
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351 }
8040
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352 recursiveFindStations(a, b, 0, stations.length-1, visitor);
8035
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353 }
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354
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355 public List<Station> findStations(double a, double b) {
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356 final List<Station> result = new ArrayList<Station>();
8035
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357 findStations(a, b, new Visitor() {
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358 @Override
8038
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359 public void visit(Station station) {
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360 result.add(station);
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361 }
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362 });
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363 return result;
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diff changeset
364 }
8033
5e3f4b4fcb28 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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365 }
5e3f4b4fcb28 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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366 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org