Mercurial > dive4elements > river
diff flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/minfo/BedloadOverviewFactory.java @ 3786:4adc35aa655c
merged flys-artifacts/2.9.1
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Fri, 28 Sep 2012 12:14:47 +0200 |
parents | ae598cf50682 |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/minfo/BedloadOverviewFactory.java Fri Sep 28 12:14:47 2012 +0200 @@ -0,0 +1,70 @@ +package de.intevation.flys.artifacts.model.minfo; + +import net.sf.ehcache.Cache; +import net.sf.ehcache.Element; + +import org.apache.log4j.Logger; +import org.hibernate.Session; + +import de.intevation.flys.artifacts.cache.CacheFactory; +import de.intevation.flys.backend.SedDBSessionHolder; + +public class BedloadOverviewFactory { + + private static Logger log = Logger.getLogger(BedloadOverviewFactory.class); + + public static final String CACHE_NAME = "sq-overviews"; + + private BedloadOverviewFactory() { + } + + + public static BedloadOverview getOverview(String river) { + + boolean debug = log.isDebugEnabled(); + + if (debug) { + log.debug( + "Looking for bedload overview for river '" + river + "'"); + } + + Cache cache = CacheFactory.getCache(CACHE_NAME); + + if (cache == null) { + if (debug) { + log.debug("Cache not configured."); + } + return getUncached(river); + } + + String key = "bedload-over-" + river; + + Element element = cache.get(key); + + if (element != null) { + if (debug) { + log.debug("Overview found in cache"); + } + return (BedloadOverview)element.getValue(); + } + + BedloadOverview overview = getUncached(river); + + if (overview != null) { + if (debug) { + log.debug("Store overview in cache."); + } + cache.put(new Element(key, overview)); + } + + return overview; + } + + public static BedloadOverview getUncached(String river) { + BedloadOverview overview = new BedloadOverview(river); + + Session session = SedDBSessionHolder.HOLDER.get(); + + return overview.load(session) ? overview : null; + } +}