Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/AnnotationsFactory.java @ 2063:97a25b54eea3

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Part 1 of #125: added a description for a location to the WaterlevelExport. flys-artifacts/trunk@3557 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 02 Jan 2012 08:50:50 +0000
parents 01f2473e362d
children a5f65e8983be
rev   line source
301
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1 package de.intevation.flys.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 de.intevation.flys.backend.SessionHolder;
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10 import de.intevation.flys.model.Annotation;
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11 import de.intevation.flys.model.Range;
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12 import de.intevation.flys.model.River;
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13
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14 import org.hibernate.Session;
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15 import org.hibernate.Query;
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16
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17 /**
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18 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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19 */
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20 public class AnnotationsFactory {
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21
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22 /**
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23 * Get Annotations which do not have a "b" ("to")-value set.
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24 *
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25 * @param river name of the river of interest.
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26 *
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27 * @return List of Annotations for river which have only "a" ("from")
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28 * value set.
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29 */
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30 public static List<Annotation> getPointAnnotations(String river) {
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31 Session session = SessionHolder.HOLDER.get();
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32
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33 Query query = session.createQuery(
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34 "from Annotation as an " +
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35 "where an.range.b = null and an.range.river.name=:name " +
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36 "order by range.a");
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37 query.setParameter("name", river);
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38 return query.list();
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39 }
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40
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41
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42 public static List<Annotation> getAnnotations(River river) {
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43 Session session = SessionHolder.HOLDER.get();
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44
311
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45 Query query = session.createQuery(
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46 "from Annotation as an where an.range.river = :river" +
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47 " order by an.range.a");
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48 query.setParameter("river", river);
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49 return query.list();
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50 }
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51
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52
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53 public static Annotation getAnnotation(String river, double km) {
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54 Session session = SessionHolder.HOLDER.get();
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55
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56 Query query = session.createQuery(
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57 "from Annotation as a " +
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58 "where a.range.river.name = :river AND a.range.a = :km");
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59
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60 query.setParameter("river", river);
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61 query.setParameter("km", BigDecimal.valueOf(km));
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62
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63 List<Annotation> result = query.list();
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64
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65 return result != null && result.size() > 0 ? result.get(0) : null;
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66 }
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67
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68
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69 /**
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70 * Get minimal "a" ("from") and maximal "b" ("to") value of annotations'
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71 * ranges of a river.
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72 *
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73 * @param river name of the river of interest.
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74 *
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75 * @return Array containing minimal "a" and max "b" value of any
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76 * annotation stored for the given river.
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77 */
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78 public static double[] getAnnotationsBreadth(String river) {
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79 Session session = SessionHolder.HOLDER.get();
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80
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81 Query minAQuery = session.createQuery(
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82 "select min(a), max(b) from Range where river.name=:name");
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83 minAQuery.setParameter("name", river);
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84
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85 double[] minAmaxB = {0.0f, 0.0f};
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86 Object[] row = (Object[]) minAQuery.list().iterator().next();
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87 minAmaxB[0] = ((BigDecimal) row[0]).doubleValue();
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88 minAmaxB[1] = ((BigDecimal) row[1]).doubleValue();
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89 return minAmaxB;
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90 }
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91
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92
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93 public static Iterator<Annotation> getAnnotationsIterator(
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94 String riverName
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95 ) {
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96 Session session = SessionHolder.HOLDER.get();
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97
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98 Query riverQuery = session.createQuery(
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99 "from River where name = :name");
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100 riverQuery.setParameter("name", riverName);
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101 List<River> rivers = riverQuery.list();
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102 if (rivers.isEmpty()) {
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103 List<Annotation> list = Collections.emptyList();
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104 return list.iterator();
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105 }
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106
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107 Query query = session.createQuery(
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108 "from Annotation as an" +
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109 " where an.range.river = :river order by an.range.a");
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110 query.setParameter("river", rivers.get(0));
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111
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112 return (Iterator<Annotation>)query.iterate();
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113 }
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114 }
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115 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org