gernotbelger@8915: /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
gernotbelger@8915:  * Software engineering by
gernotbelger@8915:  *  Björnsen Beratende Ingenieure GmbH
gernotbelger@8915:  *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
gernotbelger@8915:  *
gernotbelger@8915:  * This file is Free Software under the GNU AGPL (>=v3)
gernotbelger@8915:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
gernotbelger@8915:  * documentation coming with Dive4Elements River for details.
gernotbelger@8915:  */
gernotbelger@8915: package org.dive4elements.river.artifacts.sinfo.util;
gernotbelger@8915: 
gernotbelger@8915: import org.dive4elements.artifacts.Artifact;
gernotbelger@8915: import org.dive4elements.artifacts.ArtifactDatabase;
gernotbelger@8915: import org.dive4elements.artifacts.CallContext;
gernotbelger@8915: 
gernotbelger@8915: /**
gernotbelger@8915:  * @author Gernot Belger
gernotbelger@8915:  */
gernotbelger@8915: public final class CalculationUtils {
gernotbelger@8915: 
gernotbelger@8915:     private CalculationUtils() {
gernotbelger@8915:         throw new UnsupportedOperationException("Helper class");
gernotbelger@8915:     }
gernotbelger@8915: 
gernotbelger@8915:     /**
gernotbelger@8915:      * Find the the user of the given artifact, sadly this is not part of the calling context, so instead we determine the
gernotbelger@8915:      * owner oft the artifact
gernotbelger@8915:      *
gernotbelger@8915:      * @param artifact
gernotbelger@8915:      * @param context
gernotbelger@8915:      */
gernotbelger@8915:     public static String findArtifactUser(final CallContext context, final Artifact artifact) {
gernotbelger@9311: 
gernotbelger@9311:         // REMARK: can't do that, because sometimes the user inside the collection is a fake user
gernotbelger@9311:         // if (context instanceof CollectionCallContext) {
gernotbelger@9311:         // /* avoid db access if we already know the user */
gernotbelger@9311:         // final CollectionCallContext ccc = (CollectionCallContext) context;
gernotbelger@9311:         // final ArtifactCollection collection = ccc.getCollection();
gernotbelger@9311:         // final User user = collection.getUser();
gernotbelger@9311:         // if (user != null)
gernotbelger@9311:         // return user.getName();
gernotbelger@9311:         // }
gernotbelger@9311: 
gernotbelger@8915:         final ArtifactDatabase database = context.getDatabase();
gernotbelger@8915:         return database.findArtifactUser(artifact.identifier());
gernotbelger@8915:     }
gernotbelger@8915: }