Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/org/dive4elements/river/artifacts/model/AnnotationsFactory.java @ 5831:bd047b71ab37

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Repaired internal references
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 12:06:39 +0200
parents flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/AnnotationsFactory.java@6ed8ebd48d6e
children
rev   line source
5831
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1 package org.dive4elements.river.artifacts.model;
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2
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3 import java.math.BigDecimal;
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4
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5 import java.util.List;
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6 import java.util.Iterator;
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7 import java.util.Collections;
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8
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9 import org.dive4elements.river.backend.SessionHolder;
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10 import org.dive4elements.river.model.Annotation;
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11 import org.dive4elements.river.model.River;
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12
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13 import org.hibernate.Session;
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14 import org.hibernate.Query;
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15
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16 /**
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17 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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18 */
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19 public class AnnotationsFactory {
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20
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21 /**
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22 * Get Annotations which do not have a "b" ("to")-value set.
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23 *
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24 * @param river name of the river of interest.
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25 *
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26 * @return List of Annotations for river which have only "a" ("from")
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27 * value set.
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28 */
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29 public static List<Annotation> getPointAnnotations(String river) {
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30 Session session = SessionHolder.HOLDER.get();
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31
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32 Query query = session.createQuery(
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33 "from Annotation as an " +
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34 "where an.range.b = null and an.range.river.name=:name " +
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35 "order by range.a");
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36 query.setParameter("name", river);
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37 return query.list();
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38 }
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39
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40
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41 public static List<Annotation> getAnnotations(River river) {
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42 Session session = SessionHolder.HOLDER.get();
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43
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44 Query query = session.createQuery(
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45 "from Annotation as an where an.range.river = :river" +
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46 " order by an.range.a");
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47 query.setParameter("river", river);
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48 return query.list();
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49 }
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50
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51
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52 public static Annotation getAnnotation(String river, double km) {
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53 Session session = SessionHolder.HOLDER.get();
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54
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55 Query query = session.createQuery(
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56 "from Annotation as a " +
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57 "where a.range.river.name = :river AND a.range.a = :km");
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58
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59 query.setParameter("river", river);
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60 query.setParameter("km", BigDecimal.valueOf(km));
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61
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62 List<Annotation> result = query.list();
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63
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64 return result != null && result.size() > 0 ? result.get(0) : null;
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65 }
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66
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67
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68 /**
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69 * Get minimal "a" ("from") and maximal "b" ("to") value of annotations'
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70 * ranges of a river.
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71 *
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72 * @param river name of the river of interest.
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73 *
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74 * @return Array containing minimal "a" and max "b" value of any
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75 * annotation stored for the given river.
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76 */
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77 public static double[] getAnnotationsBreadth(String river) {
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78 Session session = SessionHolder.HOLDER.get();
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79
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80 Query minAQuery = session.createQuery(
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81 "select min(a), max(b) from Range where river.name=:name");
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82 minAQuery.setParameter("name", river);
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83
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84 double[] minAmaxB = {0.0f, 0.0f};
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85 Object[] row = (Object[]) minAQuery.list().iterator().next();
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86 minAmaxB[0] = ((BigDecimal) row[0]).doubleValue();
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87 minAmaxB[1] = ((BigDecimal) row[1]).doubleValue();
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88 return minAmaxB;
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89 }
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90
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91
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92 public static Iterator<Annotation> getAnnotationsIterator(
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93 String riverName
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94 ) {
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95 Session session = SessionHolder.HOLDER.get();
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96
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97 Query riverQuery = session.createQuery(
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98 "from River where name = :name");
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99 riverQuery.setParameter("name", riverName);
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100 List<River> rivers = riverQuery.list();
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101 if (rivers.isEmpty()) {
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102 return Collections.<Annotation>emptyList().iterator();
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103 }
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104
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105 Query query = session.createQuery(
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106 "from Annotation as an" +
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107 " where an.range.river = :river order by an.range.a");
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108 query.setParameter("river", rivers.get(0));
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109
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110 return (Iterator<Annotation>)query.iterate();
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111 }
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112 }
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113 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org