Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/context/SessionCallContextListener.java @ 4188:dc4087088c0b
Add a new outputmode for an at export in GaugeDischargeCurveArtifact
The data provided by the GaugeDischargeCurveArtifact can be used for displaying
a curve and also for an at file. Therefore provide another output mode that for
a at export.
author | Björn Ricks <bjoern.ricks@intevation.de> |
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date | Fri, 19 Oct 2012 13:28:24 +0200 |
parents | 94c176fdcb89 |
children |
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package de.intevation.flys.artifacts.context; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Node; import org.hibernate.Session; import de.intevation.flys.backend.SessionHolder; import de.intevation.artifacts.CallContext; import de.intevation.artifacts.CallContext.Listener; /** * This CallContextListener is used to initialize a ThreadLocal variable in * each CallContext (for each request) that holds Sessions. * * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class SessionCallContextListener implements Listener { public static final String SESSION_KEY = "context.session"; /** The logger that is used in this class.*/ private static Logger logger = Logger.getLogger(SessionCallContextListener.class); public SessionCallContextListener() { } public void setup(Document config, Node listenerConfig) { // nothing to do here } /** * Initializes a ThreadLocal variable that is used to hold sessions. * * @param context The CallContext. */ public void init(CallContext context) { logger.debug("SessionCallContextListener.init"); Session session = SessionHolder.acquire(); context.putContextValue(SESSION_KEY, session); } /** * Closes open sessions of the ThreadLocal variable opened in init(). * * @param context The CallContext. */ public void close(CallContext context) { logger.debug("SessionCallContextListener.close"); Session session = (Session)context.getContextValue(SESSION_KEY); session.close(); SessionHolder.release(); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :