Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/CrossSectionFactory.java @ 9425:3f49835a00c3
Extended CrossSectionFacet so it may fetch different data from within the artifact result.
Also allows to have acces to the potentially already computed artifact result via its normal computation cache.
author | gernotbelger |
---|---|
date | Fri, 17 Aug 2018 15:31:02 +0200 |
parents | 675fa2d16544 |
children | 8d6e56e57c4a |
line wrap: on
line source
/* 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.artifacts.model; import java.util.List; import net.sf.ehcache.Cache; import net.sf.ehcache.Element; import org.dive4elements.river.backend.SessionHolder; import org.dive4elements.river.model.CrossSection; import org.dive4elements.river.model.River; import org.dive4elements.river.artifacts.cache.CacheFactory; import org.hibernate.Session; import org.hibernate.Query; /** * Get Cross Sections. */ public class CrossSectionFactory { protected final static String CACHE_NAME = "cross_sections"; // TODO use caching consistently, streamline access. /** * Get CrossSections for an instantiated River. * * @param river river object. * * @return List of Cross Sections of river. */ public static List<CrossSection> getCrossSections(River river) { return getCrossSections(river.getName()); } /** * Get Cross Sections for a river by name. * * @param riverName name of the river of interest. * * @return List of Cross Sections of river. */ public static List<CrossSection> getCrossSections(String riverName) { Session session = SessionHolder.HOLDER.get(); Query query = session.createQuery( "from CrossSection where river.name = :rivername"); query.setParameter("rivername", riverName); return query.list(); } /** * Get a specific CrossSection from db. * @param id The dbid of the cross-section to load. */ public static CrossSection getCrossSection(int id) { Cache cache = CacheFactory.getCache(CACHE_NAME); if (cache != null) { Element element = cache.get(Integer.valueOf(id)); if (element != null) { return (CrossSection) element.getValue(); } } CrossSection section = getCrossSectionUncached(id); if (cache != null) { Element element = new Element(Integer.valueOf(id), section); cache.put(element); } return section; } /** Get specific CrossSection from database. */ protected static CrossSection getCrossSectionUncached(int id) { Session session = SessionHolder.HOLDER.get(); Query query = session.createQuery( "from CrossSection where id=:id"); query.setParameter("id", id); List<CrossSection> list = query.list(); return list.isEmpty() ? null : list.get(0); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :