Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/minfo/BedOverviewFactory.java @ 4242:448cbd8708d5
Added new classes for the last commit.
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Wed, 24 Oct 2012 14:44:12 +0200 |
parents | ae598cf50682 |
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Added new services to render overview charts in minfo bed quality calculation
Raimund Renkert <raimund.renkert@intevation.de>
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1 package de.intevation.flys.artifacts.model.minfo; |
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2 |
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3 import net.sf.ehcache.Cache; |
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4 import net.sf.ehcache.Element; |
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5 |
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6 import org.apache.log4j.Logger; |
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7 import org.hibernate.Session; |
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8 |
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9 import de.intevation.flys.artifacts.cache.CacheFactory; |
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10 import de.intevation.flys.backend.SedDBSessionHolder; |
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11 |
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12 public class BedOverviewFactory { |
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13 |
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14 private static Logger log = Logger.getLogger(BedOverviewFactory.class); |
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15 |
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16 public static final String CACHE_NAME = "sq-overviews"; |
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17 |
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18 private BedOverviewFactory() { |
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19 } |
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20 |
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21 |
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22 public static BedOverview getOverview(String river) { |
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23 |
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24 boolean debug = log.isDebugEnabled(); |
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25 |
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26 if (debug) { |
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27 log.debug( |
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28 "Looking for bed overview for river '" + river + "'"); |
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29 } |
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30 |
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31 Cache cache = CacheFactory.getCache(CACHE_NAME); |
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32 |
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33 if (cache == null) { |
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34 if (debug) { |
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35 log.debug("Cache not configured."); |
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36 } |
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37 return getUncached(river); |
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38 } |
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39 |
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40 String key = "bed-over-" + river; |
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41 |
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42 Element element = cache.get(key); |
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43 |
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44 if (element != null) { |
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45 if (debug) { |
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46 log.debug("Overview found in cache"); |
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47 } |
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48 return (BedOverview)element.getValue(); |
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49 } |
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50 |
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51 BedOverview overview = getUncached(river); |
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52 |
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53 if (overview != null) { |
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54 if (debug) { |
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55 log.debug("Store overview in cache."); |
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56 } |
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57 cache.put(new Element(key, overview)); |
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58 } |
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59 |
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60 return overview; |
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61 } |
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62 |
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63 public static BedOverview getUncached(String river) { |
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64 BedOverview overview = new BedOverview(river); |
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65 |
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66 Session session = SedDBSessionHolder.HOLDER.get(); |
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67 |
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68 return overview.load(session) ? overview : null; |
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69 } |
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70 } |