Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/CrossSectionFactory.java @ 2756:ba15eb120a02
Expose reference curve parameters via blackboard.
flys-artifacts/trunk@4491 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Thu, 24 May 2012 04:36:53 +0000 |
parents | ef337d9fa5ea |
children | c9815016a3bb |
rev | line source |
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1116
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Improved stub for CrossSections (including Factory and Facet).
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parents:
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1 package de.intevation.flys.artifacts.model; |
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parents:
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2 |
05e4ef0f9489
Improved stub for CrossSections (including Factory and Facet).
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3 import java.util.List; |
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4 |
1965
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Added method to CrossSectionFactory to get single CrossSection, employ cache.
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1962
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5 import net.sf.ehcache.Cache; |
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6 import net.sf.ehcache.Element; |
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7 |
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8 import de.intevation.flys.backend.SessionHolder; |
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Improved stub for CrossSections (including Factory and Facet).
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9 import de.intevation.flys.model.CrossSection; |
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Improved stub for CrossSections (including Factory and Facet).
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10 import de.intevation.flys.model.River; |
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11 |
1965
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1962
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12 import de.intevation.flys.artifacts.cache.CacheFactory; |
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13 |
1116
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14 import org.hibernate.Session; |
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15 import org.hibernate.Query; |
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16 |
1965
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Added method to CrossSectionFactory to get single CrossSection, employ cache.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
1962
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17 |
1116
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18 /** |
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19 * Get Cross Sections. |
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20 */ |
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21 public class CrossSectionFactory { |
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22 |
1965
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23 protected final static String CACHE_NAME = "cross_sections"; |
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24 |
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25 // TODO use caching consistently, streamline acces. |
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26 /** |
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27 * Get CrossSections for an instantiated River. |
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28 * |
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29 * @param river river object. |
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30 * |
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31 * @return List of Cross Sections of river. |
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32 */ |
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33 public static List<CrossSection> getCrossSections(River river) { |
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34 return getCrossSections(river.getName()); |
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35 } |
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36 |
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37 |
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38 /** |
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39 * Get Cross Sections for a river by name. |
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40 * |
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41 * @param river name of the river of interest. |
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42 * |
05e4ef0f9489
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43 * @return List of Cross Sections of river. |
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44 */ |
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45 public static List<CrossSection> getCrossSections(String riverName) { |
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46 Session session = SessionHolder.HOLDER.get(); |
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47 Query query = session.createQuery( |
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48 "from CrossSection where river.name = :rivername"); |
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49 query.setParameter("rivername", riverName); |
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50 return query.list(); |
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51 } |
1965
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52 |
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53 |
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54 /** |
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55 * True if the given section is the "newest" for that river. |
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56 * @param section Given section |
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57 * @return true if the section has the most advanced end of its validity interval |
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58 * or the most advanced start of its validity interval. |
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59 */ |
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60 public static boolean isNewest(CrossSection section) { |
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61 Session session = SessionHolder.HOLDER.get(); |
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62 Query query = session.createQuery( |
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63 "from CrossSection where river.id = :riverid " |
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64 + " order by timeInterval.stopTime desc, timeInterval.startTime desc"); |
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65 query.setParameter("riverid", section.getRiver().getId()); |
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66 |
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67 CrossSection cs = (CrossSection) query.list().get(0); |
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68 return section.getId().equals(cs.getId()); |
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69 } |
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70 |
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71 |
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72 /** |
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73 * Get a specific CrossSection from db. |
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74 * @param id The dbid of the cross-section to load. |
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75 */ |
1965
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76 public static CrossSection getCrossSection(int id) { |
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77 Cache cache = CacheFactory.getCache(CACHE_NAME); |
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78 if (cache != null) { |
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79 Element element = cache.get(Integer.valueOf(id)); |
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80 if (element != null) { |
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81 return (CrossSection) element.getValue(); |
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82 } |
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83 } |
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84 |
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85 CrossSection section = getCrossSectionUncached(id); |
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86 if (cache != null) { |
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87 Element element = new Element(Integer.valueOf(id), section); |
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88 cache.put(element); |
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89 } |
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90 |
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91 return section; |
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92 } |
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93 |
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94 |
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95 /** Get specific CrossSection from database. */ |
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96 protected static CrossSection getCrossSectionUncached(int id) { |
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97 Session session = SessionHolder.HOLDER.get(); |
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98 Query query = session.createQuery( |
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99 "from CrossSection where id=:id"); |
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100 query.setParameter("id", id); |
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101 List<CrossSection> list = query.list(); |
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102 return list.isEmpty() ? null : list.get(0); |
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103 } |
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104 } |
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105 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |