Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/SQOverviewFactory.java @ 9425:3f49835a00c3
Extended CrossSectionFacet so it may fetch different data from within the artifact result.
Also allows to have acces to the potentially already computed artifact result via its normal computation cache.
author | gernotbelger |
---|---|
date | Fri, 17 Aug 2018 15:31:02 +0200 |
parents | af13ceeba52a |
children | 0a5239a1e46e |
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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; import org.dive4elements.river.artifacts.cache.CacheFactory; import org.dive4elements.river.backend.SedDBSessionHolder; import net.sf.ehcache.Cache; import net.sf.ehcache.Element; import org.apache.log4j.Logger; import org.hibernate.Session; public class SQOverviewFactory { private static Logger log = Logger.getLogger(SQOverviewFactory.class); public static final String CACHE_NAME = "sq-overviews"; private SQOverviewFactory() { } public static SQOverview getOverview(String river) { boolean debug = log.isDebugEnabled(); if (debug) { log.debug( "Looking for sq 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 = "sq-over-" + river; Element element = cache.get(key); if (element != null) { if (debug) { log.debug("Overview found in cache"); } return (SQOverview)element.getValue(); } SQOverview overview = getUncached(river); if (overview != null) { if (debug) { log.debug("Store overview in cache."); } cache.put(new Element(key, overview)); } return overview; } public static SQOverview getUncached(String river) { SQOverview overview = new SQOverview(river); Session session = SedDBSessionHolder.HOLDER.get(); return overview.load(session) ? overview : null; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :