Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/GaugeFinderFactory.java @ 4187:21f4e4b79121
Refactor GaugeDischargeCurveFacet to be able to set a facet name
For adding another output of the GaugeDischargeCurveArtifact it is necessary to
provide to facet instances with different names. Therefore the
GaugeDischargeCurveFacet is extended to set the facet name in the constructor.
author | Björn Ricks <bjoern.ricks@intevation.de> |
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date | Fri, 19 Oct 2012 13:25:49 +0200 |
parents | c44ff50f4970 |
children | 61f4d4164a30 |
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package de.intevation.flys.artifacts.model; import de.intevation.flys.artifacts.cache.CacheFactory; import de.intevation.flys.backend.SessionHolder; import de.intevation.flys.model.River; import java.util.ArrayList; import java.util.List; import net.sf.ehcache.Cache; import net.sf.ehcache.Element; import org.apache.log4j.Logger; import org.hibernate.SQLQuery; import org.hibernate.Session; import org.hibernate.type.StandardBasicTypes; public class GaugeFinderFactory { private static Logger log = Logger.getLogger(GaugeFinderFactory.class); public static final String CACHE_NAME = "gauge-finders"; public static final String SQL_GAUGES = "SELECT" + " g.id AS gauge_id," + " g.name AS name," + " r.a AS a," + " r.b AS b " + "FROM gauges g" + " JOIN ranges r ON g.range_id = r.id " + "WHERE" + " g.river_id = :river_id " + "ORDER BY r.a"; private static GaugeFinderFactory INSTANCE; protected GaugeFinderFactory() { } public static synchronized GaugeFinderFactory getInstance() { if (INSTANCE == null) { INSTANCE = new GaugeFinderFactory(); } return INSTANCE; } public GaugeFinder getGaugeFinder(String riverName) { River river = RiverFactory.getRiver(riverName); return river != null ? getGaugeFinder(river.getId(), river.getKmUp()) : null; } public synchronized GaugeFinder getGaugeFinder( int riverId, boolean isKmUp ) { Cache cache = CacheFactory.getCache(CACHE_NAME); if (cache == null) { return getUncached(riverId, isKmUp); } String cacheKey = riverId + "-" + isKmUp; Element element = cache.get(cacheKey); if (element != null) { return (GaugeFinder)element.getValue(); } GaugeFinder finder = getUncached(riverId, isKmUp); if (finder != null) { cache.put(new Element(cacheKey, finder)); } return finder; } protected GaugeFinder loadGauges( Session session, int riverId, boolean isKmUp ) { SQLQuery query = session.createSQLQuery(SQL_GAUGES) .addScalar("gauge_id", StandardBasicTypes.INTEGER) .addScalar("name", StandardBasicTypes.STRING) .addScalar("a", StandardBasicTypes.DOUBLE) .addScalar("b", StandardBasicTypes.DOUBLE); query.setInteger("river_id", riverId); List<Object []> list = query.list(); if (list.isEmpty()) { log.warn("River " + riverId + " has no gauges."); return null; } List<GaugeRange> gauges = new ArrayList<GaugeRange>(); for (Object [] row: list) { int gaugeId = (Integer)row[0]; String name = (String) row[1]; double start = (Double) row[2]; double end = (Double) row[3]; GaugeRange gauge = new GaugeRange(start, end, name, gaugeId); gauges.add(gauge); } return new GaugeFinder(gauges, isKmUp); } protected GaugeFinder getUncached(int riverId, boolean isKmUp) { Session session = SessionHolder.HOLDER.get(); GaugeFinder finder = loadGauges(session, riverId, isKmUp); if (finder == null || !finder.loadDischargeSectors(session, riverId)) { return null; } return finder; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :