Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/CrossSectionFactory.java @ 9646:0380717105ba
Implemented alternative fitting strategy for Log-Linear function.
author | Gernot Belger <g.belger@bjoernsen.de> |
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date | Mon, 02 Dec 2019 17:56:15 +0100 |
parents | 8d6e56e57c4a |
children |
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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.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 { private 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. */ private 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 :