Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/services/DynamicMainValuesService.java @ 9588:c57caff9b00b
Punkt 10.6 CSV-Ausgabe Abflusszeitreihenlänge
author | gernotbelger |
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date | Thu, 10 Jan 2019 11:56:39 +0100 |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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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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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.artifacts.services; |
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10 |
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11 import java.math.BigDecimal; |
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12 import java.math.MathContext; |
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13 import java.math.RoundingMode; |
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14 import java.util.ArrayList; |
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15 import java.util.Calendar; |
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16 import java.util.Date; |
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17 import java.util.List; |
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18 |
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19 import org.dive4elements.artifacts.common.utils.DateUtils; |
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20 import org.dive4elements.river.backend.SessionHolder; |
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21 import org.dive4elements.river.model.Gauge; |
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22 import org.dive4elements.river.model.MainValue; |
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23 import org.dive4elements.river.model.MainValueType; |
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24 import org.dive4elements.river.model.MainValueType.MainValueTypeKey; |
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25 import org.dive4elements.river.model.NamedMainValue; |
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26 import org.dive4elements.river.model.OfficialLine; |
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27 import org.dive4elements.river.model.River; |
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28 import org.dive4elements.river.model.TimeInterval; |
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29 import org.dive4elements.river.model.sinfo.DailyDischargeValue; |
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30 import org.dive4elements.river.model.sinfo.DailyDischargeValue.OrderByField; |
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31 import org.dive4elements.river.utils.DoubleUtil; |
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32 import org.hibernate.Session; |
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33 |
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34 import gnu.trove.TDoubleArrayList; |
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35 |
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36 /** |
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37 * This service returns the main values of a river's gauge based on the start |
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38 * and end point of the river. |
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39 * |
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40 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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41 */ |
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42 public class DynamicMainValuesService extends AbstractDynamicMainValuesService { |
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43 |
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44 private static final long serialVersionUID = 1L; |
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45 |
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46 /** |
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47 * Computes a gauge's main values for a period of time based on its daily discharges stored in the database |
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48 */ |
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49 @Override |
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50 protected List<MainValue> getMainValues(final River river, final Gauge gauge, final Date startTime, final Date endTime) throws MainValuesServiceException { |
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51 |
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52 final List<MainValue> mainValues = new ArrayList<>(); |
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53 computeMainDischargeValues(gauge, startTime, endTime, mainValues); |
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54 return mainValues; |
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55 } |
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56 |
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57 /** |
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58 * Computes mnq, mq, mhq, hq5 and q(d=0..364) and adds them to a MainValue list |
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59 */ |
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60 private void computeMainDischargeValues(final Gauge gauge, final Date startTime, final Date endTime, final List<MainValue> mainValues) |
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61 throws MainValuesServiceException { |
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62 |
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63 // Query the gauge's daily Q values |
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64 final Date qStartTime = DateUtils.getAbflussYear(startTime)[0]; |
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65 final List<DailyDischargeValue> qdvs = DailyDischargeValue.getValues(gauge, qStartTime, endTime, OrderByField.DAY); |
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66 if (qdvs.isEmpty()) |
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67 throw new MainValuesServiceException("no daily discharge values for gauge " + gauge.getName() + " in the requested time period"); |
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68 // return; |
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69 |
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70 // Build yearly aggregates |
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71 final Date qYearEnd = DateUtils.getPreviousAbflussYear(endTime)[1]; |
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72 final TDoubleArrayList mnqs = new TDoubleArrayList(); |
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73 final TDoubleArrayList mqs = new TDoubleArrayList(); |
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74 int mqcnt = 0; |
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75 final TDoubleArrayList mhqs = new TDoubleArrayList(); |
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76 for (int i = 0, j = 0; i <= qdvs.size() - 1; i++) { |
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77 final DailyDischargeValue qdv = qdvs.get(i); |
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78 if ((i >= 1) && isSameQYear(qdv.getDay(), qdvs.get(i - 1).getDay())) { |
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79 // Continue aggregating the values of the current year |
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80 mnqs.set(j, Math.min(mnqs.get(j), qdv.getDischarge().doubleValue())); |
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81 mhqs.set(j, Math.max(mhqs.get(j), qdv.getDischarge().doubleValue())); |
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82 mqs.set(j, mqs.get(j) + qdv.getDischarge().doubleValue()); |
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83 mqcnt++; |
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84 if (i == qdvs.size() - 1) |
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85 mqs.set(j, mqs.get(j) / mqcnt); |
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86 } else { |
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87 // Complete mq aggregation |
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88 if (mqcnt >= 1) { |
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89 mqs.set(j, mqs.get(j) / mqcnt); |
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90 j++; |
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91 } |
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92 if (qdv.getDay().after(qYearEnd)) |
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93 break; |
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94 // Start next year |
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95 mnqs.add(qdv.getDischarge().doubleValue()); |
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96 mhqs.add(qdv.getDischarge().doubleValue()); |
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97 mqs.add(qdv.getDischarge().doubleValue()); |
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98 mqcnt = 1; |
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99 } |
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100 } |
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101 |
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102 // Compute arithmetic means of the yearly values |
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103 final Session session = SessionHolder.HOLDER.get(); |
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104 final TimeInterval timeperiod = new TimeInterval(startTime, endTime); |
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105 final double mnq = DoubleUtil.sum(mnqs.toNativeArray()) / mnqs.size(); |
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106 mainValues.add(createMainValue(gauge, fetchNamedQMainValue("MNQ", session), mnq, timeperiod)); |
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107 final double mq = DoubleUtil.sum(mqs.toNativeArray()) / mqs.size(); |
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108 mainValues.add(createMainValue(gauge, fetchNamedQMainValue("MQ", session), mq, timeperiod)); |
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109 final double mhq = DoubleUtil.sum(mhqs.toNativeArray()) / mhqs.size(); |
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110 mainValues.add(createMainValue(gauge, fetchNamedQMainValue("MHQ", session), mhq, timeperiod)); |
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111 |
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112 // Compute hq5 - obsolete |
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113 // mhqs.sort(); |
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114 // final double hq5 = mhqs.get((int) Math.ceil(4 * mhqs.size() / 5)); |
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115 // mainValues.add(createMainValue(gauge, fetchNamedQMainValue("HQ5", session), hq5, timeperiod)); |
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116 |
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117 // Add HSQ-II from the gauge's main values |
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118 final MainValue hsq2 = fetchHsqII(gauge, session); |
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119 if (hsq2 != null) |
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120 mainValues.add(hsq2); |
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121 |
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122 // Query the gauge's daily Q values from the first new year on, and build a list sorted by ascending Q |
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123 final TDoubleArrayList qs = new TDoubleArrayList(); |
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124 for (final DailyDischargeValue qdv : qdvs) { |
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125 if (qdv.getDay().compareTo(startTime) >= 0) |
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126 qs.add(qdv.getDischarge().doubleValue()); |
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127 } |
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128 qs.sort(); |
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129 |
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130 // Step through the sorted Q list and get the duration discharges |
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131 final int yearCnt = DateUtils.getYearFromDate(endTime) - DateUtils.getYearFromDate(startTime) + 1; |
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132 double glq20 = Double.NaN; |
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133 for (int i = 0, k = 0; (i <= 364) && (k <= qs.size() - 1); i++, k += yearCnt) { |
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134 final NamedMainValue nmv = fetchNamedQMainValue(i, session); |
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135 if (nmv != null) { |
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136 final double q = getDurationQ(qs, k); |
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137 mainValues.add(createMainValue(gauge, nmv, q, timeperiod)); |
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138 if (i == 20) |
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139 glq20 = q; |
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140 } |
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141 } |
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142 mainValues.add(createMainValue(gauge, fetchNamedQMainValue("GlQ", session), glq20, timeperiod)); |
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143 } |
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144 |
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145 /** |
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146 * Checks year equality of two dates (Abflussjahr) |
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147 */ |
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148 private boolean isSameQYear(final Date a, final Date b) { |
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149 return (qYear(a) == qYear(b)); |
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150 } |
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151 |
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152 /** |
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153 * Gets the q year (Abflussjahr) of a date |
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154 */ |
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155 private int qYear(final Date day) { |
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156 final Calendar cal = Calendar.getInstance(); |
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157 cal.setTime(day); |
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158 if (cal.get(Calendar.MONTH) >= 10) |
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159 return cal.get(Calendar.YEAR) + 1; |
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160 else |
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161 return cal.get(Calendar.YEAR); |
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162 } |
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163 |
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164 /** |
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165 * Fetches the gauge's HSQ-II from the database, or returns null |
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166 */ |
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167 private MainValue fetchHsqII(final Gauge gauge, final Session session) { |
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168 final NamedMainValue nmv = NamedMainValue.fetchByNameAndType("HSQ-II", MainValueTypeKey.UNKNOWN.getName(), session); |
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169 if (nmv == null) |
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170 return null; |
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171 final List<MainValue> mvs = gauge.getMainValues(); |
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172 for (final MainValue mv : mvs) { |
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173 if (mv.getMainValue().getId() == nmv.getId()) |
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174 return mv; |
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175 } |
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176 return null; |
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177 } |
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178 |
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179 /** |
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180 * Fetches a named main Q value from the database, if existing |
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181 */ |
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182 private NamedMainValue fetchNamedQMainValue(final String name, final Session session) { |
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183 final NamedMainValue nmv = NamedMainValue.fetchByNameAndType(name, MainValueTypeKey.Q.getName(), session); |
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184 if (nmv != null) |
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185 nmv.setOfficialLines(new ArrayList<OfficialLine>()); |
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186 return nmv; |
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187 } |
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188 |
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189 /** |
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190 * Fetches a named main Q(duration) value from the database, if existing |
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191 */ |
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192 private NamedMainValue fetchNamedQMainValue(final int days, final Session session) { |
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193 |
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194 NamedMainValue nmv = NamedMainValue.fetchByNameAndType(Integer.toString(days), MainValueTypeKey.DURATION.getName(), session); |
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195 if (nmv == null) { |
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196 final MainValueType mvt = new MainValueType(MainValueTypeKey.INVISIBLE_D.name()); |
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197 nmv = new NamedMainValue(Integer.toString(days), mvt); |
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198 } |
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199 |
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200 nmv.setOfficialLines(new ArrayList<OfficialLine>()); |
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201 |
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202 return nmv; |
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203 } |
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204 |
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205 /** |
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206 * Creates a main value for a main value name |
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207 */ |
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208 private MainValue createMainValue(final Gauge gauge, final NamedMainValue nmv, final double value, final TimeInterval timeperiod) { |
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209 return new MainValue(gauge, nmv, BigDecimal.valueOf(value).setScale(0, RoundingMode.HALF_EVEN), timeperiod); // TODO Scale per Formatter-Konstante o.ä. |
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210 } |
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211 |
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212 /** |
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213 * Gets the q from a list at a list position, or the next larger q if the immediate successors are equal |
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214 */ |
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215 private double getDurationQ(final TDoubleArrayList qs, final int i) { |
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216 if (i == 0) |
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217 return qs.getQuick(0); |
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218 for (int j = i; j <= qs.size() - 1; j++) { |
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219 if (qs.getQuick(j) > qs.getQuick(j - 1) + 0.001) |
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220 return qs.getQuick(j); |
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221 } |
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222 // Identical values at end of list: increment q on third significant digit |
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223 final MathContext mc = new MathContext(3, RoundingMode.FLOOR); |
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224 BigDecimal qplus = BigDecimal.valueOf(qs.getQuick(qs.size() - 1)); |
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225 qplus = qplus.round(mc).add(BigDecimal.ONE.scaleByPowerOfTen(-qplus.scale())); |
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226 return qplus.doubleValue(); |
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227 } |
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228 } |