Mercurial > dive4elements > river
view backend/src/main/java/org/dive4elements/river/importer/ImportDischargeZone.java @ 5850:df5d29987df8
Wst: Avoid NPE.
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Fri, 26 Apr 2013 11:08:58 +0200 |
parents | 4dd33b86dc61 |
children | 4c3ccf2b0304 |
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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.importer; import java.math.BigDecimal; import java.util.List; import org.apache.log4j.Logger; import org.hibernate.Session; import org.hibernate.Query; import org.dive4elements.river.model.DischargeZone; import org.dive4elements.river.model.River; public class ImportDischargeZone { private static final Logger log = Logger.getLogger(ImportDischargeZone.class); private String gaugeName; private BigDecimal value; private String lowerDischarge; private String upperDischarge; private DischargeZone peer; public ImportDischargeZone( String gaugeName, BigDecimal value, String lowerDischarge, String upperDischarge ) { this.gaugeName = gaugeName; this.value = value; this.lowerDischarge = lowerDischarge; this.upperDischarge = upperDischarge; } public void storeDependencies(River river) { log.debug("store dependencies"); getPeer(river); } public DischargeZone getPeer(River river) { if (peer == null) { Session session = ImporterSession.getInstance().getDatabaseSession(); Query query = session.createQuery( "from DischargeZone where " + " river=:river and " + " gaugeName=:gaugeName and " + " value=:value" ); query.setParameter("river", river); query.setParameter("gaugeName", gaugeName); query.setParameter("value", value); List<DischargeZone> zone = query.list(); if (zone.isEmpty()) { peer = new DischargeZone( river, gaugeName, value, lowerDischarge, upperDischarge); session.save(peer); } else { peer = zone.get(0); } } return peer; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :