Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/SedimentLoadDataFactory.java @ 8210:3bb00338228c

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(issue1448) Use left join to permit loads with empty sq_time intervals to be handled.
author Andre Heinecke <andre.heinecke@intevation.de>
date Fri, 05 Sep 2014 15:09:44 +0200
parents 42ac86ec19c7
children 204905c16ade
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
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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.sql.Timestamp;
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11 import java.util.HashMap;
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7e55790da464 Use list() instead of iterator(). Why does this not work?
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parents: 8058
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12 import java.util.List;
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13
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14 import net.sf.ehcache.Cache;
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15 import net.sf.ehcache.Element;
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16
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17 import org.apache.log4j.Logger;
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8d447516b7dd Sum up fractions from stations and previous stations according to respective validity model.
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18 import org.dive4elements.river.artifacts.model.RiverFactory;
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19 import org.dive4elements.river.artifacts.cache.CacheFactory;
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20 import org.dive4elements.river.backend.SessionHolder;
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21 import org.hibernate.SQLQuery;
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22 import org.hibernate.Session;
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23 import org.hibernate.type.StandardBasicTypes;
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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24
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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25 public class SedimentLoadDataFactory
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26 {
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27 private static Logger log = Logger.getLogger(SedimentLoadDataFactory.class);
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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28
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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29 public static final String CACHE_NAME = "sediment-load-data";
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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30
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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31 public static final String SUSPENDED_STRING = "Schwebstoff";
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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32
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33 public static final String SQL_LOAD_RIVER_SEDIMENT_LOADS =
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34 "SELECT " +
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 "sl.id AS sl_id, " +
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fbe3ba5a480e Sediment load: Fetch kind of sediment load from database to tell if it is official or not.
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36 "sl.kind AS sl_kind, " +
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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 "sl.description AS sl_description, " +
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 "ti.start_time AS ti_start_time, " +
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6f3cf934ae99 Fix ti_stop_time naming
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39 "ti.stop_time AS ti_stop_time, " +
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42ac86ec19c7 (issue1448) Add sq time intervals to sediment load data model.
Andre Heinecke <andre.heinecke@intevation.de>
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40 "sqti.start_time AS sq_start_time, " +
42ac86ec19c7 (issue1448) Add sq time intervals to sediment load data model.
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41 "sqti.stop_time AS sq_stop_time, " +
42ac86ec19c7 (issue1448) Add sq time intervals to sediment load data model.
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42 "sqti.id AS sq_ti_id, " +
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43 "slv.value AS slv_value, " +
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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44 "gf.name AS gf_name, " +
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45 "ms.id AS ms_id, " +
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46 "ms.station AS ms_station, " +
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47 "ms.measurement_type AS ms_type " +
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48 "FROM sediment_load_values slv " +
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49 "JOIN sediment_load sl ON slv.sediment_load_id = sl.id " +
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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50 "JOIN time_intervals ti ON sl.time_interval_id = ti.id " +
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3bb00338228c (issue1448) Use left join to permit loads with empty sq_time intervals to be handled.
Andre Heinecke <andre.heinecke@intevation.de>
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51 "LEFT JOIN time_intervals sqti ON sl.sq_time_interval_id = sqti.id " +
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52 "JOIN grain_fraction gf ON sl.grain_fraction_id = gf.id " +
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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53 "JOIN measurement_station ms ON slv.measurement_station_id = ms.id " +
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fbe3ba5a480e Sediment load: Fetch kind of sediment load from database to tell if it is official or not.
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54 "JOIN rivers r ON ms.river_id = r.id " +
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55 "WHERE r.name = :river " +
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56 "ORDER BY sl.id";
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57
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cd35b76f1ef8 Sediment load. More off year based calculations.
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58 public static final SedimentLoadDataFactory INSTANCE =
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59 new SedimentLoadDataFactory();
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60
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61 private SedimentLoadDataFactory() {
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62 }
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63
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64 public synchronized SedimentLoadData getSedimentLoadData(String river) {
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65 boolean debug = log.isDebugEnabled();
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66
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67 if (debug) {
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68 log.debug(
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69 "Looking for sediment load data for river '" + river + "'");
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70 }
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71
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72 Cache cache = CacheFactory.getCache(CACHE_NAME);
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73
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74 if (cache == null) {
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75 if (debug) {
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76 log.debug("Cache not configured.");
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77 }
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78 return getUncached(river);
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79 }
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80
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81 String key = "sediment-load-" + river;
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82
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83 Element element = cache.get(key);
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84
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85 if (element != null) {
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86 if (debug) {
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87 log.debug("Sediment load data found in cache");
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88 }
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89 return (SedimentLoadData)element.getValue();
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90 }
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92 SedimentLoadData sedimentLoad = getUncached(river);
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93
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94 if (sedimentLoad != null) {
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95 if (debug) {
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96 log.debug("Store sediment load data in cache.");
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97 }
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98 cache.put(new Element(key, sedimentLoad));
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99 }
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100
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101 return sedimentLoad;
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102 }
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103
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104 public SedimentLoadData getUncached(String river) {
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105
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106 Session session = SessionHolder.HOLDER.get();
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107
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108 SQLQuery sqlQuery = session.createSQLQuery(SQL_LOAD_RIVER_SEDIMENT_LOADS)
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109 .addScalar("sl_id", StandardBasicTypes.INTEGER)
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110 .addScalar("sl_kind", StandardBasicTypes.INTEGER)
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111 .addScalar("sl_description", StandardBasicTypes.STRING)
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112 .addScalar("ti_start_time", StandardBasicTypes.TIMESTAMP)
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113 .addScalar("ti_stop_time", StandardBasicTypes.TIMESTAMP)
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114 .addScalar("sq_start_time", StandardBasicTypes.TIMESTAMP)
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115 .addScalar("sq_stop_time", StandardBasicTypes.TIMESTAMP)
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116 .addScalar("sq_ti_id", StandardBasicTypes.INTEGER)
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117 .addScalar("slv_value", StandardBasicTypes.DOUBLE)
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118 .addScalar("gf_name", StandardBasicTypes.STRING)
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119 .addScalar("ms_id", StandardBasicTypes.INTEGER)
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120 .addScalar("ms_station", StandardBasicTypes.DOUBLE)
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121 .addScalar("ms_type", StandardBasicTypes.STRING);
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122
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123 sqlQuery.setString("river", river);
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124
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125 SedimentLoadData.Load load = null;
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126 int grainFractionIndex = SedimentLoadData.GF_UNKNOWN;
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127
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128 HashMap<Integer, SedimentLoadData.Station> id2station
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129 = new HashMap<Integer, SedimentLoadData.Station>();
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130
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131 List<Object[]> list = sqlQuery.list();
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132
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133 for (Object [] row: list) {
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134
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135 Integer sl_id = (Integer)row[0];
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136 Integer sl_kind = (Integer)row[1];
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137 String sl_description = (String)row[2];
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138 Timestamp ti_start_time = (Timestamp)row[3];
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139 Timestamp ti_stop_time = (Timestamp)row[4];
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140 Timestamp sq_start_time = (Timestamp)row[5];
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141 Timestamp sq_stop_time = (Timestamp)row[6];
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142 Integer sq_id = (Integer)row[7];
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143 Double slv_value = (Double)row[8];
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144 String gf_name = (String)row[9];
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145 Integer ms_id = (Integer)row[10];
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146 Double ms_station = (Double)row[11];
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147 String ms_type = (String)row[12];
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148
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149 if (load == null || load.getId() != sl_id) {
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150 if (sq_id == null) {
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151 /* Avoid NPE when converting the objects. */
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152 load = new SedimentLoadData.Load(
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153 sl_id, sl_kind, sl_description,
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154 ti_start_time, ti_stop_time);
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155 } else {
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156 load = new SedimentLoadData.Load(
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157 sl_id, sl_kind, sl_description,
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158 ti_start_time, ti_stop_time, sq_id,
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159 sq_start_time, sq_stop_time);
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160 }
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161
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162 // Grain fractions only change when a new sediment load starts.
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163 grainFractionIndex =
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164 SedimentLoadData.grainFractionIndex(gf_name);
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165
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166 if (grainFractionIndex == SedimentLoadData.GF_UNKNOWN) {
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167 log.error("Unknown grain fraction type: " + gf_name);
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168 break;
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169 }
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170 }
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171
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172 SedimentLoadData.Station station = id2station.get(ms_id);
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173 if (station == null) {
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174 int type = ms_type.equalsIgnoreCase(SUSPENDED_STRING)
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175 ? SedimentLoadData.Station.SUSPENDED
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176 : SedimentLoadData.Station.BED_LOAD;
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177
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178 station = new SedimentLoadData.Station(type, ms_station);
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179 id2station.put(ms_id, station);
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180 }
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181
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182 station.addValue(
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183 grainFractionIndex,
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184 new SedimentLoadData.Value(load, slv_value));
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185 }
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186
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187 SedimentLoadData sld = new SedimentLoadData(id2station.values(),
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188 RiverFactory.getRiver(river).getKmUp());
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189
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190 return sld;
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191 }
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192 }
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193 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org