Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/minfo/BedHeightFactory.java @ 4838:ac9a3d9576b4
merged.
author | Raimund Renkert <rrenkert@intevation.de> |
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date | Wed, 23 Jan 2013 11:15:35 +0100 |
parents | 58bdf95df5e4 |
children |
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package de.intevation.flys.artifacts.model.minfo; import java.util.Date; 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; import de.intevation.flys.artifacts.cache.CacheFactory; import de.intevation.flys.artifacts.model.StaticBedHeightCacheKey; import de.intevation.flys.backend.SessionHolder; public class BedHeightFactory { /** Private logger to use here. */ private static Logger log = Logger.getLogger(BedHeightFactory.class); /** Query to get km and ws for wst_id and column_pos. */ public static final String SQL_SELECT_SINGLE = "SELECT bhsv.height, bhsv.station, bhsv.data_gap, bhsv.sounding_width, bhs.year " + " FROM bed_height_single bhs" + " JOIN bed_height_single_values bhsv on bhsv.bed_height_single_id = bhs.id" + " WHERE bhs.id = :height_id"; /** Query to get name for wst_id and column_pos. */ public static final String SQL_SELECT_EPOCH = "SELECT bv.height, bv.station, ti.start_time, ti.stop_time" + " FROM bed_height_epoch b" + " JOIN bed_height_epoch_values bv ON b.id = bv.bed_height_epoch_id" + " JOIN time_intervals ti ON b.time_interval_id = ti.id" + " WHERE b.id = :height_id"; /** Query to get name (description) for wst_id. */ public static final String SQL_SELECT_DESCR_SINGLE = "SELECT description FROM bed_height_single "+ "WHERE id = :height_id"; /** Query to get name (description) for wst_id. */ public static final String SQL_SELECT_DESCR_EPOCH = "SELECT description from bed_height_epoch "+ "WHERE id = :height_id"; private BedHeightFactory() { } /** * Get WKms for given column and wst_id, caring about the cache. */ public static BedHeight getHeight(String type, int height_id, int time) { log.debug("BedHeightFactory.getHeight"); Cache cache = CacheFactory.getCache(StaticBedHeightCacheKey.CACHE_NAME); StaticBedHeightCacheKey cacheKey; if (cache != null) { cacheKey = new StaticBedHeightCacheKey(height_id, time); Element element = cache.get(cacheKey); if (element != null) { log.debug("Got static bedheight values from cache"); return (BedHeight)element.getValue(); } } else { cacheKey = null; } BedHeight values = getBedHeightUncached(type, height_id, time); if (values != null && cacheKey != null) { log.debug("Store static bed height values in cache."); Element element = new Element(cacheKey, values); cache.put(element); } return values; } /** Get name for a WKms. */ public static String getHeightName(String type, int height_id) { log.debug("BedHeightFactory.getHeightName height_id/" + height_id); String name = null; Session session = SessionHolder.HOLDER.get(); SQLQuery nameQuery = null; if (type.equals("single")) { nameQuery = session.createSQLQuery(SQL_SELECT_DESCR_SINGLE) .addScalar("description", StandardBasicTypes.STRING); nameQuery.setInteger("height_id", height_id); } else if (type.equals("epoch")) { nameQuery = session.createSQLQuery(SQL_SELECT_DESCR_EPOCH) .addScalar("description", StandardBasicTypes.STRING); nameQuery.setInteger("height_id", height_id); } else { return "none"; } List<String> names = nameQuery.list(); if (!names.isEmpty()) { name = names.get(0); } return name; } /** * Get WKms from db. * @param column the position columns value * @param wst_id database id of the wst * @return according WKms. */ public static BedHeight getBedHeightUncached( String type, int height_id, int time) { if (log.isDebugEnabled()) { log.debug("BedHeightFactory.getBedHeightUncached"); } Session session = SessionHolder.HOLDER.get(); SQLQuery sqlQuery = null; if (type.equals("single")) { BedHeightSingle height = new BedHeightSingle(getHeightName(type, height_id)); sqlQuery = session.createSQLQuery(SQL_SELECT_SINGLE) .addScalar("height", StandardBasicTypes.DOUBLE) .addScalar("station", StandardBasicTypes.DOUBLE) .addScalar("data_gap", StandardBasicTypes.DOUBLE) .addScalar("sounding_width", StandardBasicTypes.DOUBLE) .addScalar("year", StandardBasicTypes.INTEGER); sqlQuery.setInteger("height_id", height_id); List<Object []> results = sqlQuery.list(); for (int i = 0; i < results.size(); i++) { Object[] row = results.get(i); log.debug("got station: " + (Double)row[1]); height.add( (Double) row[0], (Double) row[1], (Double) row[2], (Double) row[3], (Integer) row[4]); } return height; } else if (type.equals("epoch")) { BedHeightEpoch height = new BedHeightEpoch(getHeightName(type, height_id)); sqlQuery = session.createSQLQuery(SQL_SELECT_EPOCH) .addScalar("height", StandardBasicTypes.DOUBLE) .addScalar("station", StandardBasicTypes.DOUBLE) .addScalar("start_time", StandardBasicTypes.DATE) .addScalar("stop_time", StandardBasicTypes.DATE); sqlQuery.setInteger("height_id", height_id); List<Object []> results = sqlQuery.list(); for (Object [] row: results) { height.add( (Double) row[0], (Double) row[1], (Date) row[2], (Date) row[3]); } return height; } return new BedHeight(); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :