Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/FixingsColumnFactory.java @ 9801:1d7a72a50183 3.2.x tip
Assume Compose V2, consistently
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 23 Nov 2023 10:14:13 +0100 |
parents | 0a5239a1e46e |
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rev | line source |
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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.model; |
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10 |
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11 import org.dive4elements.river.artifacts.model.FixingsOverview.Fixing; |
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12 |
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13 import org.dive4elements.river.artifacts.cache.CacheFactory; |
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14 |
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15 import org.dive4elements.river.backend.SessionHolder; |
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16 |
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17 import java.util.List; |
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18 |
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19 import net.sf.ehcache.Cache; |
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20 import net.sf.ehcache.Element; |
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21 |
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22 import org.hibernate.Session; |
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23 import org.hibernate.SQLQuery; |
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24 |
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25 import org.hibernate.type.StandardBasicTypes; |
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26 |
9726 | 27 import org.apache.logging.log4j.Logger; |
28 import org.apache.logging.log4j.LogManager; | |
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29 |
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30 public class FixingsColumnFactory |
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31 { |
9726 | 32 private static Logger log = LogManager.getLogger(FixingsColumnFactory.class); |
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33 |
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34 public static final String CACHE_NAME = "fixings-columns"; |
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35 |
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36 public static final String SQL_COLUMN_WS = |
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37 "SELECT wcv.position AS km, wcv.w AS w " + |
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38 "FROM wst_column_values wcv " + |
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39 "WHERE wst_column_id = :column_id " + |
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40 "ORDER by wcv.position"; |
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41 |
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42 public static final String SQL_COLUMN_QS = |
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43 "SELECT wqr.q AS q, r.a AS a, r.b AS b " + |
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44 "FROM wst_column_q_ranges wcqr " + |
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45 "JOIN wst_q_ranges wqr ON wcqr.wst_q_range_id = wqr.id " + |
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46 "JOIN ranges r ON wqr.range_id = r.id " + |
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47 "WHERE wcqr.wst_column_id = :column_id ORDER by r.a"; |
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48 |
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49 public static final FixingsColumnFactory INSTANCE = |
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50 new FixingsColumnFactory(); |
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51 |
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52 private FixingsColumnFactory() { |
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53 } |
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54 |
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55 public static FixingsColumnFactory getInstance() { |
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56 return INSTANCE; |
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57 } |
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58 |
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59 public FixingsColumn getColumnData(Fixing.Column column) { |
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60 |
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61 boolean debug = log.isDebugEnabled(); |
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62 |
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63 if (debug) { |
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64 log.debug("FixingsColumnFactory.getColumnData"); |
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65 } |
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66 |
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67 Cache cache = CacheFactory.getCache(CACHE_NAME); |
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68 |
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69 if (cache == null) { |
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70 if (debug) { |
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71 log.debug("Cache unconfigured."); |
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72 } |
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73 return getUncached(column); |
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74 } |
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75 |
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76 Integer cacheKey = Integer.valueOf(column.getId()); |
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77 Element element = cache.get(cacheKey); |
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78 |
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79 if (element != null) { |
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80 if (debug) { |
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81 log.debug("Column " + cacheKey + " found in cache."); |
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82 } |
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83 return (FixingsColumn)element.getValue(); |
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84 } |
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85 else { |
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86 FixingsColumn result = getUncached(column); |
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87 if (result != null) { |
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88 if (debug) { |
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89 log.debug("Store column " + cacheKey + " into cache."); |
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90 } |
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91 cache.put(new Element(cacheKey, result)); |
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92 } |
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93 return result; |
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94 } |
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95 } |
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96 |
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97 protected FixingsColumn getUncached(Fixing.Column column) { |
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98 Session session = SessionHolder.HOLDER.get(); |
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99 |
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100 SQLQuery sqlQuery = session.createSQLQuery(SQL_COLUMN_WS) |
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101 .addScalar("km", StandardBasicTypes.DOUBLE) |
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102 .addScalar("w", StandardBasicTypes.DOUBLE); |
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103 |
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104 sqlQuery.setInteger("column_id", column.getId()); |
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105 |
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106 List<Object []> results = sqlQuery.list(); |
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107 |
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108 if (results.isEmpty()) { |
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109 return null; |
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110 } |
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111 |
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112 double [] kms = new double[results.size()]; |
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113 double [] ws = new double[kms.length]; |
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114 |
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115 for (int i = 0; i < kms.length; ++i) { |
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116 Object [] row = results.get(i); |
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117 kms[i] = ((Double)row[0]).doubleValue(); |
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118 ws [i] = ((Double)row[1]).doubleValue(); |
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119 } |
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120 |
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121 sqlQuery = session.createSQLQuery(SQL_COLUMN_QS) |
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122 .addScalar("q", StandardBasicTypes.DOUBLE) |
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123 .addScalar("a", StandardBasicTypes.DOUBLE) |
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124 .addScalar("b", StandardBasicTypes.DOUBLE); |
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125 |
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126 sqlQuery.setInteger("column_id", column.getId()); |
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127 |
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128 results = sqlQuery.list(); |
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129 |
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130 if (results.isEmpty()) { |
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131 return null; |
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132 } |
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133 |
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134 QRangeTree qs = new QRangeTree( |
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135 results, QRangeTree.WITHOUT_COLUMN, 0, results.size()); |
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136 |
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137 return new FixingsColumn(kms, ws, qs); |
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138 } |
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139 } |
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140 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |