Mercurial > dive4elements > river

annotate flys-backend/src/main/java/org/dive4elements/river/importer/ImportCrossSectionLine.java @ 5829:18619c1e7c2a

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Repaired internal references.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 11:54:36 +0200
parents dfb26b03b179
children
rev   line source
5829
18619c1e7c2a Repaired internal references.
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1 package org.dive4elements.river.importer;
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2
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3 import org.dive4elements.river.model.CrossSection;
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4 import org.dive4elements.river.model.CrossSectionPoint;
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5 import org.dive4elements.river.model.CrossSectionLine;
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6
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7 import org.hibernate.Session;
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8 import org.hibernate.Query;
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9
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10 import java.util.List;
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11 import java.util.Comparator;
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12 import java.util.Map;
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13 import java.util.TreeMap;
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14
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15 /**
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16 * A CrossSectionLine (containing points) ready to be transformed into a mapped
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17 * object and written to db (used in importer).
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18 */
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19 public class ImportCrossSectionLine
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20 {
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21 public static final Comparator<CrossSectionPoint> INDEX_CMP =
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22 new Comparator<CrossSectionPoint>() {
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23 public int compare(CrossSectionPoint a, CrossSectionPoint b) {
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24 return a.getColPos().compareTo(b.getColPos());
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25 }
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26 };
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27
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28 protected Double km;
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29 protected ImportCrossSection crossSection;
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30 protected List<XY> points;
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31
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32 protected CrossSectionLine peer;
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33
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34 public ImportCrossSectionLine() {
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35 }
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36
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37 public ImportCrossSectionLine(Double km, List<XY> points) {
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38 this.km = km;
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39 this.points = points;
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40 }
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41
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42 public ImportCrossSection getCrossSection() {
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43 return crossSection;
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44 }
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45
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46 public void setCrossSection(ImportCrossSection crossSection) {
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47 this.crossSection = crossSection;
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48 }
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49
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50 public Double getKm() {
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51 return km;
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52 }
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53
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54 public void setKm(Double km) {
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55 this.km = km;
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56 }
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57
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58 public void storeDependencies() {
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59 storePoints();
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60 }
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61
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62
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63 /** Write a line and its points. */
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64 protected void storePoints() {
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65 CrossSectionLine csl = getPeer();
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66
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67 Map<CrossSectionPoint, CrossSectionPoint> map =
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68 new TreeMap<CrossSectionPoint, CrossSectionPoint>(INDEX_CMP);
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69
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70 // Build index for faster (index) collision lookup.
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71 List<CrossSectionPoint> ps = csl.getPoints();
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72 if (ps != null) {
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73 for (CrossSectionPoint point: ps) {
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74 map.put(point, point);
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75 }
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76 }
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77
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78 Session session =
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79 ImporterSession.getInstance().getDatabaseSession();
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80
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81 CrossSectionPoint key = new CrossSectionPoint();
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82
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83 // Somehow it looks as if even with the map it is still possible that
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84 // multiple points with same id enter hibernate (and then violate a
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85 // constraint). -> TODO
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86 for (XY xy: points) {
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87 key.setColPos(xy.getIndex());
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88 CrossSectionPoint csp = map.get(key);
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89 if (csp == null) { // create new
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90 csp = new CrossSectionPoint(
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91 csl, key.getColPos(),
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92 Double.valueOf(xy.getX()),
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93 Double.valueOf(xy.getY()));
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94 }
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95 else { // update old
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96 csp.setX(Double.valueOf(xy.getX()));
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97 csp.setY(Double.valueOf(xy.getY()));
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98 }
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99 session.save(csp);
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100 }
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101 }
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102
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103 public CrossSectionLine getPeer() {
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104 if (peer == null) {
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105 CrossSection cs = crossSection.getPeer();
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106
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107 Session session =
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108 ImporterSession.getInstance().getDatabaseSession();
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109
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110 Query query = session.createQuery(
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111 "from CrossSectionLine where crossSection=:cs and km=:km");
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112 query.setParameter("cs", cs);
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113 query.setParameter("km", km);
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114
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115 List<CrossSectionLine> lines = query.list();
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116 if (lines.isEmpty()) {
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117 peer = new CrossSectionLine(cs, km);
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118 session.save(peer);
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119 }
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120 else {
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121 peer = lines.get(0);
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122 }
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123 }
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124 return peer;
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125 }
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126 }
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127 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org