Mercurial > dive4elements > river
annotate backend/src/main/java/org/dive4elements/river/importer/ImportCrossSectionLine.java @ 9034:8aa7d9eaaa21
Added bed_height_values section heights height01 to height10
author | mschaefer |
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date | Mon, 30 Apr 2018 10:13:15 +0200 |
parents | 392bbcd8a88b |
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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.importer; |
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10 |
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11 import java.util.Comparator; |
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12 import java.util.List; |
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13 import java.util.Map; |
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14 import java.util.TreeMap; |
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15 |
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16 import org.dive4elements.river.importer.common.StoreMode; |
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17 import org.dive4elements.river.model.CrossSection; |
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18 import org.dive4elements.river.model.CrossSectionLine; |
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19 import org.dive4elements.river.model.CrossSectionPoint; |
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20 import org.hibernate.Query; |
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21 import org.hibernate.Session; |
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22 |
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23 /** |
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24 * A CrossSectionLine (containing points) ready to be transformed into a mapped |
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25 * object and written to db (used in importer). |
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26 */ |
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27 public class ImportCrossSectionLine |
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28 { |
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29 public static final Comparator<CrossSectionPoint> INDEX_CMP = |
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30 new Comparator<CrossSectionPoint>() { |
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31 @Override |
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32 public int compare(final CrossSectionPoint a, final CrossSectionPoint b) { |
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33 return a.getColPos().compareTo(b.getColPos()); |
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34 } |
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35 }; |
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36 |
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37 protected Double km; |
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38 protected ImportCrossSection crossSection; |
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39 protected List<XY> points; |
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40 protected StoreMode storeMode; |
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41 |
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42 protected CrossSectionLine peer; |
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43 |
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44 public ImportCrossSectionLine() { |
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45 } |
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46 |
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47 public ImportCrossSectionLine(final Double km, final List<XY> points) { |
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48 this.km = km; |
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49 this.points = points; |
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50 this.storeMode = StoreMode.NONE; |
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51 } |
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52 |
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53 public ImportCrossSection getCrossSection() { |
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54 return this.crossSection; |
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55 } |
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56 |
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57 public void setCrossSection(final ImportCrossSection crossSection) { |
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58 this.crossSection = crossSection; |
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59 } |
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60 |
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61 public Double getKm() { |
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62 return this.km; |
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63 } |
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64 |
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65 public void setKm(final Double km) { |
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66 this.km = km; |
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67 } |
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68 |
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69 public void storeDependencies() { |
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70 storePoints(); |
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71 } |
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72 |
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73 |
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74 /** Write a line and its points. */ |
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75 protected void storePoints() { |
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76 final CrossSectionLine csl = getPeer(); |
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77 if (this.storeMode == StoreMode.INSERT) { |
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78 insertPoints(); |
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79 return; |
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80 } |
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81 final Map<CrossSectionPoint, CrossSectionPoint> map = |
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82 new TreeMap<>(INDEX_CMP); |
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83 |
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84 // Build index for faster (index) collision lookup. |
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85 final List<CrossSectionPoint> ps = csl.getPoints(); |
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86 if (ps != null) { |
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87 for (final CrossSectionPoint point: ps) { |
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88 map.put(point, point); |
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89 } |
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90 } |
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91 |
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92 final Session session = ImporterSession.getInstance().getDatabaseSession(); |
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93 |
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94 final CrossSectionPoint key = new CrossSectionPoint(); |
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95 |
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96 // Somehow it looks as if even with the map it is still possible that |
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97 // multiple points with same id enter hibernate (and then violate a |
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98 // constraint). -> TODO |
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99 for (final XY xy: this.points) { |
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100 key.setColPos(xy.getIndex()); |
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101 CrossSectionPoint csp = map.get(key); |
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102 if (csp == null) { // create new |
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103 csp = new CrossSectionPoint( |
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104 csl, key.getColPos(), |
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105 Double.valueOf(xy.getX()), |
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106 Double.valueOf(xy.getY())); |
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107 } |
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108 else { // update old |
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109 csp.setX(Double.valueOf(xy.getX())); |
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110 csp.setY(Double.valueOf(xy.getY())); |
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111 } |
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112 session.save(csp); |
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113 } |
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114 } |
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115 |
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116 /** |
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117 * Insert the points of a new line into the database without previously querying the database |
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118 */ |
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119 private void insertPoints() { |
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120 final Session session = ImporterSession.getInstance().getDatabaseSession(); |
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121 for (final XY xy : this.points) { |
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122 session.save(new CrossSectionPoint(getPeer(), xy.getIndex(), xy.getX(), xy.getY())); |
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123 } |
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124 } |
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125 |
6280 | 126 /** Pull database-mapped object from db, or create (and save) one. */ |
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127 public CrossSectionLine getPeer() { |
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128 if (this.peer == null) { |
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129 final CrossSection cs = this.crossSection.getPeer(); |
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130 final Session session = ImporterSession.getInstance().getDatabaseSession(); |
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131 List<CrossSectionLine> lines; |
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132 if (this.crossSection.storeMode == StoreMode.INSERT) |
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133 lines = null; |
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134 else { |
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135 final Query query = session.createQuery("from CrossSectionLine where crossSection=:cs and km=:km"); |
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136 query.setParameter("cs", cs); |
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137 query.setParameter("km", this.km); |
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138 lines = query.list(); |
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139 } |
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140 if ((lines == null) || lines.isEmpty()) { |
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141 this.peer = new CrossSectionLine(cs, this.km); |
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142 session.save(this.peer); |
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143 this.storeMode = StoreMode.INSERT; |
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144 } |
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145 else { |
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146 this.peer = lines.get(0); |
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147 this.storeMode = StoreMode.UPDATE; |
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148 } |
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149 } |
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150 return this.peer; |
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151 } |
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152 } |
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153 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |