Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/CrossSectionFactory.java @ 8568:078b07a94023
Use updated class name instead of no more existant.
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 26 Feb 2015 15:37:03 +0100 |
parents | 675fa2d16544 |
children | 8d6e56e57c4a |
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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.artifacts.model; |
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10 |
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11 import java.util.List; |
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12 |
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13 import net.sf.ehcache.Cache; |
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14 import net.sf.ehcache.Element; |
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15 |
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16 import org.dive4elements.river.backend.SessionHolder; |
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17 import org.dive4elements.river.model.CrossSection; |
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18 import org.dive4elements.river.model.River; |
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19 |
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20 import org.dive4elements.river.artifacts.cache.CacheFactory; |
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21 |
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22 import org.hibernate.Session; |
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23 import org.hibernate.Query; |
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24 |
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25 |
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26 /** |
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27 * Get Cross Sections. |
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28 */ |
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29 public class CrossSectionFactory { |
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30 |
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31 protected final static String CACHE_NAME = "cross_sections"; |
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32 |
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33 // TODO use caching consistently, streamline access. |
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34 /** |
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35 * Get CrossSections for an instantiated River. |
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36 * |
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37 * @param river river object. |
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38 * |
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39 * @return List of Cross Sections of river. |
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40 */ |
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41 public static List<CrossSection> getCrossSections(River river) { |
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42 return getCrossSections(river.getName()); |
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43 } |
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44 |
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45 |
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46 /** |
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47 * Get Cross Sections for a river by name. |
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48 * |
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49 * @param riverName name of the river of interest. |
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50 * |
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51 * @return List of Cross Sections of river. |
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52 */ |
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53 public static List<CrossSection> getCrossSections(String riverName) { |
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54 Session session = SessionHolder.HOLDER.get(); |
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55 Query query = session.createQuery( |
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56 "from CrossSection where river.name = :rivername"); |
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57 query.setParameter("rivername", riverName); |
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58 return query.list(); |
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59 } |
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60 |
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61 |
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62 |
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63 /** |
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64 * Get a specific CrossSection from db. |
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65 * @param id The dbid of the cross-section to load. |
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66 */ |
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67 public static CrossSection getCrossSection(int id) { |
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68 Cache cache = CacheFactory.getCache(CACHE_NAME); |
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69 if (cache != null) { |
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70 Element element = cache.get(Integer.valueOf(id)); |
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71 if (element != null) { |
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72 return (CrossSection) element.getValue(); |
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73 } |
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74 } |
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75 |
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76 CrossSection section = getCrossSectionUncached(id); |
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77 if (cache != null) { |
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78 Element element = new Element(Integer.valueOf(id), section); |
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79 cache.put(element); |
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80 } |
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81 |
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82 return section; |
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83 } |
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84 |
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85 |
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86 /** Get specific CrossSection from database. */ |
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87 protected static CrossSection getCrossSectionUncached(int id) { |
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88 Session session = SessionHolder.HOLDER.get(); |
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89 Query query = session.createQuery( |
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90 "from CrossSection where id=:id"); |
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91 query.setParameter("id", id); |
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92 List<CrossSection> list = query.list(); |
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93 return list.isEmpty() ? null : list.get(0); |
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94 } |
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95 } |
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96 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |