Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/sq/SQRelationCalculation.java @ 4255:670e98f5a441
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> |
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date | Thu, 25 Oct 2012 14:01:46 +0200 |
parents | ba2f0bff0697 |
children | aaf810d4ec82 |
rev | line source |
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1 package de.intevation.flys.artifacts.model.sq; |
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2 |
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3 import de.intevation.flys.artifacts.access.SQRelationAccess; |
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4 |
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5 import de.intevation.flys.artifacts.math.fitting.Function; |
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6 import de.intevation.flys.artifacts.math.fitting.FunctionFactory; |
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7 |
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8 import de.intevation.flys.artifacts.model.Calculation; |
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9 import de.intevation.flys.artifacts.model.CalculationResult; |
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10 import de.intevation.flys.artifacts.model.DateRange; |
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11 import de.intevation.flys.artifacts.model.Parameters; |
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12 |
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13 import de.intevation.flys.backend.SedDBSessionHolder; |
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15 import java.util.ArrayList; |
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16 import java.util.List; |
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17 |
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18 import org.apache.log4j.Logger; |
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19 |
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20 public class SQRelationCalculation extends Calculation { |
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21 |
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22 private static final Logger log = |
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23 Logger.getLogger(SQRelationCalculation.class); |
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24 |
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25 public static final String SQ_FUNCTION_NAME = "sq-pow"; |
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26 |
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27 protected String river; |
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28 protected double location; |
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29 protected DateRange period; |
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30 protected double outliers; |
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31 |
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32 public SQRelationCalculation() { |
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33 } |
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34 |
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35 public SQRelationCalculation(SQRelationAccess access) { |
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36 |
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37 String river = access.getRiver(); |
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38 Double location = access.getLocation(); |
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39 DateRange period = access.getPeriod(); |
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40 Double outliers = access.getOutliers(); |
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41 |
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42 //river = "Rhein"; |
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43 |
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44 if (river == null) { |
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45 // TODO: i18n |
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46 addProblem("sq.missing.river"); |
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47 } |
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48 |
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49 if (location == null) { |
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50 // TODO: i18n |
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51 addProblem("sq.missing.location"); |
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52 } |
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53 |
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54 if (period == null) { |
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55 // TODO: i18n |
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56 addProblem("sq.missing.periods"); |
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57 } |
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58 |
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59 if (outliers == null) { |
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60 // TODO: i18n |
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61 addProblem("sq.missing.outliers"); |
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62 } |
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63 |
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64 if (!hasProblems()) { |
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65 this.river = river; |
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66 this.location = location; |
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67 this.period = period; |
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68 this.outliers = outliers; |
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69 } |
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70 } |
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71 |
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72 |
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73 public CalculationResult calculate() { |
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74 log.debug("SQRelationCalculation.calculate"); |
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75 |
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76 if (hasProblems()) { |
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77 return new CalculationResult(this); |
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78 } |
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79 |
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80 SedDBSessionHolder.acquire(); |
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81 try { |
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82 return internalCalculate(); |
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83 } |
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84 finally { |
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85 SedDBSessionHolder.release(); |
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86 } |
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87 } |
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88 |
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89 protected CalculationResult internalCalculate() { |
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90 |
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91 Function function = FunctionFactory |
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92 .getInstance() |
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93 .getFunction(SQ_FUNCTION_NAME); |
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94 |
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95 if (function == null) { |
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96 log.error("No '" + SQ_FUNCTION_NAME + "' function found."); |
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97 // TODO: i18n |
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98 addProblem("sq.missing.sq.function"); |
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99 } |
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100 |
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101 Measurements measurements = |
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102 MeasurementFactory.getMeasurements(river, location, period); |
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103 |
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104 SQFractionResult [] fractionResults = |
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105 new SQFractionResult[SQResult.NUMBER_FRACTIONS]; |
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106 |
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107 for (int i = 0; i < fractionResults.length; ++i) { |
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108 List<SQ> sqs = measurements.getSQs(i); |
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109 |
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110 SQFractionResult fractionResult; |
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111 |
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112 List<SQFractionResult.Iteration> iterations = |
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113 doFitting(function, sqs); |
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114 |
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115 if (iterations == null) { |
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116 // TODO: i18n |
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117 addProblem("sq.fitting.failed." + i); |
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118 fractionResult = new SQFractionResult(); |
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119 } |
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120 else { |
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121 fractionResult = new SQFractionResult( |
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122 sqs.toArray(new SQ[sqs.size()]), |
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123 iterations); |
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124 } |
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125 |
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126 fractionResults[i] = fractionResult; |
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127 } |
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128 |
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129 return new CalculationResult( |
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130 new SQResult[] { new SQResult(location, fractionResults) }, |
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131 this); |
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132 } |
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133 |
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134 protected List<SQFractionResult.Iteration> doFitting( |
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135 final Function function, |
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136 List<SQ> sqs |
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137 ) { |
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138 final List<SQFractionResult.Iteration> iterations = |
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139 new ArrayList<SQFractionResult.Iteration>(); |
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140 |
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141 boolean success = new Fitting(function, outliers).fit( |
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142 sqs, |
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143 new Fitting.Callback() { |
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144 @Override |
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145 public void afterIteration( |
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146 double [] coeffs, |
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147 SQ [] measurements, |
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148 SQ [] outliers, |
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149 double standardDeviation, |
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150 double chiSqr |
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151 ) { |
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152 Parameters parameters = createParameters( |
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153 function.getParameterNames(), |
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154 coeffs, |
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155 standardDeviation, |
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156 chiSqr); |
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157 iterations.add(new SQFractionResult.Iteration( |
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158 parameters, |
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159 measurements, |
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160 outliers)); |
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161 } |
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162 }); |
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163 |
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164 return success ? iterations : null; |
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165 } |
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166 |
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167 public static final Parameters createParameters( |
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168 String [] names, |
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169 double [] values, |
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170 double standardDeviation, |
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171 double chiSqr |
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172 ) { |
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173 String [] columns = new String[names.length + 2]; |
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174 columns[0] = "chi_sqr"; |
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175 columns[1] = "std_dev"; |
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176 System.arraycopy(names, 0, columns, 2, names.length); |
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177 Parameters parameters = new Parameters(columns); |
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178 int row = parameters.newRow(); |
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179 parameters.set(row, names, values); |
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180 parameters.set(row, "chi_sqr", chiSqr); |
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181 parameters.set(row, "std_dev", standardDeviation); |
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182 return parameters; |
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183 } |
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184 } |
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185 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |