Mercurial > dive4elements > river
view backend/src/main/java/org/dive4elements/river/backend/SedDBSessionHolder.java @ 9269:83ebeb620b5a
Station specific main value annotations in S-Info flood duration curve, corrected infrastructure flood duration calculation
author | mschaefer |
---|---|
date | Thu, 19 Jul 2018 08:07:03 +0200 |
parents | 0d711ecbcd49 |
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.backend; import org.apache.log4j.Logger; import org.hibernate.Session; import org.hibernate.SessionFactory; public class SedDBSessionHolder { private static Logger log = Logger.getLogger(SedDBSessionHolder.class); public static final ThreadLocal<Session> HOLDER = new ThreadLocal<Session>() { @Override protected Session initialValue() { Session session = create(); log.debug("Initial session value: " + session.hashCode()); return session; } }; public synchronized static Session create() { log.debug("create"); SessionFactory sessionFactory = SessionFactoryProvider.getSedDBSessionFactory(); return sessionFactory.openSession(); } public static Session acquire() { Session session = create(); log.debug("acquired session: " + session.hashCode()); HOLDER.set(session); return session; } public static void release() { Session session = HOLDER.get(); if (session != null) { log.debug("releasing session: " + session.hashCode()); session.close(); } else { log.error("release() called on NULL session."); } HOLDER.remove(); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :