teichmann@5831: package org.dive4elements.river.artifacts.model;
ingo@318: 
ingo@318: import java.util.List;
ingo@318: 
teichmann@5831: import org.dive4elements.river.backend.SessionHolder;
teichmann@5831: import org.dive4elements.river.model.River;
teichmann@5831: import org.dive4elements.river.model.Wst;
ingo@318: 
ingo@318: import org.hibernate.Query;
ingo@318: import org.hibernate.Session;
ingo@318: 
ingo@318: /**
ingo@318:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@318:  */
ingo@318: public class WstFactory {
ingo@318: 
sascha@622:     public static final int DEFAULT_KIND = 0;
sascha@622: 
ingo@318:     /** We don't need to instantiate concrete objects of this class. */
ingo@318:     private WstFactory() {
ingo@318:     }
ingo@318: 
ingo@318: 
ingo@318:     /**
ingo@318:      * Returns the Wst object for a given river.
ingo@318:      *
ingo@318:      * @param river The river.
ingo@318:      *
ingo@318:      * @return the Wst of <i>river</i>.
ingo@318:      */
ingo@318:     public static Wst getWst(River river) {
sascha@622:         return getWst(river, DEFAULT_KIND);
sascha@622:     }
sascha@622: 
sascha@622:     public static Wst getWst(River river, int kind) {
ingo@318:         Session session = SessionHolder.HOLDER.get();
ingo@318: 
ingo@318:         Query query = session.createQuery(
sascha@622:             "from Wst where river=:river and kind = :kind");
ingo@318:         query.setParameter("river", river);
sascha@622:         query.setInteger("kind", kind);
ingo@318: 
sascha@622:         List<Wst> wsts = query.list();
ingo@318: 
sascha@622:         return wsts.isEmpty() ? null : wsts.get(0);
ingo@318:     }
ingo@318: }
ingo@318: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :