Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedloadOverviewFactory.java @ 8098:09725b65955a
Add new and simplyfied SedimentLoadFacet
The SedimentLoadFacet is intended to work with the Measurement stations.
It uses the same mechanismn to access the Mesurement station values
as the calculation does.
SedimentLoadLS values need a different facet that will come soon.
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Fri, 15 Aug 2014 18:27:19 +0200 |
parents | af13ceeba52a |
children | 9530a00056dd |
rev | line source |
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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.minfo; |
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10 |
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11 import net.sf.ehcache.Cache; |
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12 import net.sf.ehcache.Element; |
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13 |
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14 import org.apache.log4j.Logger; |
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15 import org.hibernate.Session; |
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16 |
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17 import org.dive4elements.river.artifacts.cache.CacheFactory; |
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18 import org.dive4elements.river.backend.SedDBSessionHolder; |
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19 |
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20 public class BedloadOverviewFactory { |
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21 |
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22 private static Logger log = Logger.getLogger(BedloadOverviewFactory.class); |
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23 |
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24 public static final String CACHE_NAME = "sq-overviews"; |
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25 |
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26 private BedloadOverviewFactory() { |
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27 } |
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28 |
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29 |
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30 public static BedloadOverview getOverview(String river) { |
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31 |
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32 boolean debug = log.isDebugEnabled(); |
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33 |
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34 if (debug) { |
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35 log.debug( |
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36 "Looking for bedload overview for river '" + river + "'"); |
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37 } |
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38 |
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39 Cache cache = CacheFactory.getCache(CACHE_NAME); |
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40 |
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41 if (cache == null) { |
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42 if (debug) { |
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43 log.debug("Cache not configured."); |
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44 } |
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45 return getUncached(river); |
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46 } |
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47 |
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48 String key = "bedload-over-" + river; |
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49 |
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50 Element element = cache.get(key); |
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51 |
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52 if (element != null) { |
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53 if (debug) { |
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54 log.debug("Overview found in cache"); |
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55 } |
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56 return (BedloadOverview)element.getValue(); |
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57 } |
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58 |
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59 BedloadOverview overview = getUncached(river); |
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60 |
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61 if (overview != null) { |
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62 if (debug) { |
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63 log.debug("Store overview in cache."); |
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64 } |
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65 cache.put(new Element(key, overview)); |
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66 } |
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67 |
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68 return overview; |
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69 } |
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70 |
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71 public static BedloadOverview getUncached(String river) { |
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72 BedloadOverview overview = new BedloadOverview(river); |
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73 |
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74 Session session = SedDBSessionHolder.HOLDER.get(); |
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75 |
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76 return overview.load(session) ? overview : null; |
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77 } |
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78 } |