Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/FixingsColumnFactory.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 | a441be7f1589 |
children |
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package de.intevation.flys.artifacts.model; import de.intevation.flys.artifacts.model.FixingsOverview.Fixing; import de.intevation.flys.artifacts.cache.CacheFactory; import de.intevation.flys.backend.SessionHolder; import java.util.List; import net.sf.ehcache.Cache; import net.sf.ehcache.Element; import org.hibernate.Session; import org.hibernate.SQLQuery; import org.hibernate.type.StandardBasicTypes; import org.apache.log4j.Logger; public class FixingsColumnFactory { private static Logger log = Logger.getLogger(FixingsColumnFactory.class); public static final String CACHE_NAME = "fixings-columns"; public static final String SQL_COLUMN_WS = "SELECT wcv.position AS km, wcv.w AS w " + "FROM wst_column_values wcv " + "WHERE wst_column_id = :column_id " + "ORDER by wcv.position"; public static final String SQL_COLUMN_QS = "SELECT wqr.q AS q, r.a AS a, r.b AS b " + "FROM wst_column_q_ranges wcqr " + "JOIN wst_q_ranges wqr ON wcqr.wst_q_range_id = wqr.id " + "JOIN ranges r ON wqr.range_id = r.id " + "WHERE wcqr.wst_column_id = :column_id ORDER by r.a"; public static final FixingsColumnFactory INSTANCE = new FixingsColumnFactory(); private FixingsColumnFactory() { } public static FixingsColumnFactory getInstance() { return INSTANCE; } public FixingsColumn getColumnData(Fixing.Column column) { boolean debug = log.isDebugEnabled(); if (debug) { log.debug("FixingsColumnFactory.getColumnData"); } Cache cache = CacheFactory.getCache(CACHE_NAME); if (cache == null) { if (debug) { log.debug("Cache unconfigured."); } return getUncached(column); } Integer cacheKey = Integer.valueOf(column.getId()); Element element = cache.get(cacheKey); if (element != null) { if (debug) { log.debug("Column " + cacheKey + " found in cache."); } return (FixingsColumn)element.getValue(); } else { FixingsColumn result = getUncached(column); if (result != null) { if (debug) { log.debug("Store column " + cacheKey + " into cache."); } cache.put(new Element(cacheKey, result)); } return result; } } protected FixingsColumn getUncached(Fixing.Column column) { Session session = SessionHolder.HOLDER.get(); SQLQuery sqlQuery = session.createSQLQuery(SQL_COLUMN_WS) .addScalar("km", StandardBasicTypes.DOUBLE) .addScalar("w", StandardBasicTypes.DOUBLE); sqlQuery.setInteger("column_id", column.getId()); List<Object []> results = sqlQuery.list(); if (results.isEmpty()) { return null; } double [] kms = new double[results.size()]; double [] ws = new double[kms.length]; for (int i = 0; i < kms.length; ++i) { Object [] row = results.get(i); kms[i] = ((Double)row[0]).doubleValue(); ws [i] = ((Double)row[1]).doubleValue(); } sqlQuery = session.createSQLQuery(SQL_COLUMN_QS) .addScalar("q", StandardBasicTypes.DOUBLE) .addScalar("a", StandardBasicTypes.DOUBLE) .addScalar("b", StandardBasicTypes.DOUBLE); sqlQuery.setInteger("column_id", column.getId()); results = sqlQuery.list(); if (results.isEmpty()) { return null; } QRangeTree qs = new QRangeTree( results, QRangeTree.WITHOUT_COLUMN, 0, results.size()); return new FixingsColumn(kms, ws, qs); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :