Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/FixingsOverviewFactory.java @ 7296:16e34277bba4
doc fix.
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Fri, 11 Oct 2013 12:40:52 +0200 |
parents | af13ceeba52a |
children | 0a5239a1e46e |
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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 org.dive4elements.river.artifacts.cache.CacheFactory; |
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12 |
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13 import org.dive4elements.river.backend.SessionHolder; |
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14 |
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15 import net.sf.ehcache.Cache; |
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16 import net.sf.ehcache.Element; |
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17 |
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18 import org.apache.log4j.Logger; |
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19 |
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20 import org.hibernate.Session; |
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21 |
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22 public class FixingsOverviewFactory |
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23 { |
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24 private static Logger log = Logger.getLogger(FixingsOverviewFactory.class); |
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25 |
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26 public static final String CACHE_NAME = "fixings-overviews"; |
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27 |
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28 private FixingsOverviewFactory() { |
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29 } |
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30 |
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31 |
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32 public static FixingsOverview getOverview(String river) { |
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33 |
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34 boolean debug = log.isDebugEnabled(); |
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35 |
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36 if (debug) { |
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37 log.debug( |
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38 "Looking for fixings overview for river '" + river + "'"); |
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39 } |
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40 |
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41 Cache cache = CacheFactory.getCache(CACHE_NAME); |
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42 |
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43 if (cache == null) { |
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44 if (debug) { |
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45 log.debug("Cache not configured."); |
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46 } |
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47 return getUncached(river); |
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48 } |
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49 |
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50 String key = "fix-over-" + river; |
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51 |
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52 Element element = cache.get(key); |
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53 |
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54 if (element != null) { |
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55 if (debug) { |
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56 log.debug("Overview found in cache"); |
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57 } |
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58 return (FixingsOverview)element.getValue(); |
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59 } |
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60 |
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61 FixingsOverview overview = getUncached(river); |
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62 |
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63 if (overview != null) { |
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64 if (debug) { |
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65 log.debug("Store overview in cache."); |
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66 } |
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67 cache.put(new Element(key, overview)); |
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68 } |
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69 |
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70 return overview; |
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71 } |
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72 |
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73 public static FixingsOverview getUncached(String river) { |
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74 FixingsOverview overview = new FixingsOverview(river); |
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75 |
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76 Session session = SessionHolder.HOLDER.get(); |
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77 |
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78 return overview.load(session) ? overview : null; |
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79 } |
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80 } |
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81 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |