Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/minfo/BedHeightFactory.java @ 3614:68beaa827751
MINFO: Implemented UI and facet/artifact stack for bed height differences.
flys-artifacts/trunk@5276 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Raimund Renkert <raimund.renkert@intevation.de> |
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date | Tue, 28 Aug 2012 11:45:23 +0000 |
parents | |
children | 633fbb61a0cc |
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package de.intevation.flys.artifacts.model.minfo; 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 height, station, data_gap FROM bed_height_single_values " + "WHERE id = :height_id"; /** Query to get name for wst_id and column_pos. */ public static final String SQL_SELECT_EPOCH = "SELECT height, station FROM bed_height_epoch_values "+ "WHERE 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.size() >= 1) { 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"); } BedHeight height = new BedHeight(getHeightName(type, height_id)); Session session = SessionHolder.HOLDER.get(); SQLQuery sqlQuery = null; if (type.equals("single")) { sqlQuery = session.createSQLQuery(SQL_SELECT_SINGLE) .addScalar("height", StandardBasicTypes.DOUBLE) .addScalar("station", StandardBasicTypes.DOUBLE) .addScalar("data_gap", StandardBasicTypes.DOUBLE); sqlQuery.setInteger("height_id", height_id); List<Object []> results = sqlQuery.list(); for (int i = 0; i <= results.size(); i++) { Object[] row = results.get(i); height.add((Double) row[0], (Double) row[1], (Double) row[2]); } } else if (type.equals("epoch")) { sqlQuery = session.createSQLQuery(SQL_SELECT_EPOCH) .addScalar("height", StandardBasicTypes.DOUBLE) .addScalar("station", StandardBasicTypes.DOUBLE); sqlQuery.setInteger("height_id", height_id); List<Object []> results = sqlQuery.list(); for (int i = 0; i <= results.size(); i++) { Object[] row = results.get(i); height.add((Double) row[0], (Double) row[1], 0); } } return height; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :