Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedloadOverviewFactory.java @ 7027:21064459dc5d
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author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Mon, 16 Sep 2013 17:29:16 +0200 |
parents | af13ceeba52a |
children | 9530a00056dd |
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.artifacts.model.minfo; import net.sf.ehcache.Cache; import net.sf.ehcache.Element; import org.apache.log4j.Logger; import org.hibernate.Session; import org.dive4elements.river.artifacts.cache.CacheFactory; import org.dive4elements.river.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; } }