teichmann@5863: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5863:  * Software engineering by Intevation GmbH
teichmann@5863:  *
teichmann@5863:  * This file is Free Software under the GNU AGPL (>=v3) 
teichmann@5863:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5863:  * documentation coming with Dive4Elements River for details. 
teichmann@5863:  */
teichmann@5863: 
teichmann@5831: package org.dive4elements.river.artifacts.services;
ingo@1631: 
ingo@1631: import org.w3c.dom.Document;
ingo@1631: 
ingo@1631: import org.apache.log4j.Logger;
ingo@1631: 
ingo@1631: import org.hibernate.Session;
ingo@1631: 
teichmann@5831: import org.dive4elements.artifacts.CallMeta;
teichmann@5831: import org.dive4elements.artifacts.GlobalContext;
ingo@1631: 
teichmann@5831: import org.dive4elements.artifactdatabase.XMLService;
ingo@1631: 
teichmann@5831: import org.dive4elements.river.backend.SessionHolder;
ingo@1631: 
ingo@1631: 
teichmann@5868: public abstract class D4EService extends XMLService {
ingo@1631: 
teichmann@5868:     private static final Logger logger = Logger.getLogger(D4EService.class);
ingo@1631: 
ingo@1631: 
sascha@2084:     @Override
sascha@2607:     public Document processXML(
ingo@1631:         Document      data,
ingo@1631:         GlobalContext globalContext,
ingo@1631:         CallMeta      callMeta
ingo@1631:     ) {
ingo@1631:         init();
ingo@1631: 
ingo@1631:         try {
ingo@1631:             return doProcess(data, globalContext, callMeta);
ingo@1631:         }
ingo@1631:         finally {
ingo@1631:             shutdown();
ingo@1631:         }
ingo@1631:     }
ingo@1631: 
ingo@1631: 
ingo@1631:     protected abstract Document doProcess(
ingo@1631:         Document      data,
ingo@1631:         GlobalContext globalContext,
ingo@1631:         CallMeta      callMeta);
ingo@1631: 
ingo@1631: 
ingo@1631:     protected void init() {
ingo@1631:         logger.debug("init");
ingo@1631:         SessionHolder.acquire();
ingo@1631:     }
ingo@1631: 
ingo@1631: 
ingo@1631:     protected void shutdown() {
ingo@1631:         logger.debug("shutdown");
ingo@1631:         Session session = SessionHolder.HOLDER.get();
ingo@1631:         session.close();
ingo@1631: 
ingo@1631:         SessionHolder.release();
ingo@1631:     }
ingo@1631: }
ingo@1631: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :