teichmann@5831: package org.dive4elements.river.artifacts.model.minfo;
rrenkert@5764: 
rrenkert@5764: import java.util.List;
rrenkert@5764: 
rrenkert@5764: import net.sf.ehcache.Cache;
rrenkert@5764: import net.sf.ehcache.Element;
rrenkert@5764: 
rrenkert@5764: import org.apache.log4j.Logger;
rrenkert@5764: import org.hibernate.SQLQuery;
rrenkert@5764: import org.hibernate.Session;
rrenkert@5764: import org.hibernate.type.StandardBasicTypes;
rrenkert@5764: 
teichmann@5831: import org.dive4elements.river.artifacts.cache.CacheFactory;
teichmann@5831: import org.dive4elements.river.artifacts.model.StaticMorphoWidthCacheKey;
teichmann@5831: import org.dive4elements.river.backend.SessionHolder;
rrenkert@5764: 
rrenkert@5764: 
rrenkert@5764: public class MorphologicWidthFactory
rrenkert@5764: {
rrenkert@5764:     /** Private logger to use here. */
rrenkert@5764:     private static Logger log = Logger.getLogger(MorphologicWidthFactory.class);
rrenkert@5764: 
rrenkert@5764:     public static final String SQL_SELECT =
rrenkert@5764:         "SELECT mwv.station AS station, mwv.width AS width " +
rrenkert@5764:         "   FROM morphologic_width mw" +
rrenkert@5764:         "       JOIN morphologic_width_values mwv on mwv.morphologic_width_id = mw.id" +
rrenkert@5764:         "   WHERE mw.id = :width_id";
rrenkert@5764: 
rrenkert@5764:     private MorphologicWidthFactory() {
rrenkert@5764:     }
rrenkert@5764: 
rrenkert@5764: 
rrenkert@5764:     /**
rrenkert@5764:      * Get WKms for given column and wst_id, caring about the cache.
rrenkert@5764:      */
rrenkert@5764:     public static MorphologicWidth getWidth(int width_id) {
rrenkert@5764:         log.debug("MorphologicWidthFactory.getWidth");
rrenkert@5764:         Cache cache = CacheFactory.getCache(StaticMorphoWidthCacheKey.CACHE_NAME);
rrenkert@5764: 
rrenkert@5764:         StaticMorphoWidthCacheKey cacheKey;
rrenkert@5764: 
rrenkert@5764:         if (cache != null) {
rrenkert@5764:             cacheKey = new StaticMorphoWidthCacheKey(width_id);
rrenkert@5764:             Element element = cache.get(cacheKey);
rrenkert@5764:             if (element != null) {
rrenkert@5764:                 log.debug("Got static bedheight values from cache");
rrenkert@5764:                 return (MorphologicWidth)element.getValue();
rrenkert@5764:             }
rrenkert@5764:         }
rrenkert@5764:         else {
rrenkert@5764:             cacheKey = null;
rrenkert@5764:         }
rrenkert@5764: 
rrenkert@5764:         MorphologicWidth values = getWidthUncached(width_id);
rrenkert@5764: 
rrenkert@5764:         if (values != null && cacheKey != null) {
rrenkert@5764:             log.debug("Store static morphologic width values in cache.");
rrenkert@5764:             Element element = new Element(cacheKey, values);
rrenkert@5764:             cache.put(element);
rrenkert@5764:         }
rrenkert@5764:         return values;
rrenkert@5764:     }
rrenkert@5764: 
rrenkert@5764:     private static MorphologicWidth getWidthUncached(int width_id) {
rrenkert@5764:         if (log.isDebugEnabled()) {
rrenkert@5764:             log.debug("MorphologicWidthFactory.getWidthUncached");
rrenkert@5764:         }
rrenkert@5764: 
rrenkert@5764:         Session session = SessionHolder.HOLDER.get();
rrenkert@5764:         SQLQuery sqlQuery = session.createSQLQuery(SQL_SELECT)
rrenkert@5764:                 .addScalar("station", StandardBasicTypes.DOUBLE)
rrenkert@5764:                 .addScalar("width", StandardBasicTypes.DOUBLE);
rrenkert@5764:         sqlQuery.setInteger("width_id", width_id);
rrenkert@5764:         List<Object []> results = sqlQuery.list();
rrenkert@5764: 
rrenkert@5764:         MorphologicWidth widths = new MorphologicWidth();
rrenkert@5764:         for (int i = 0; i < results.size(); i++) {
rrenkert@5764:             Object[] row = results.get(i);
rrenkert@5764:             log.debug("got station: " + (Double)row[0]);
rrenkert@5764:             widths.add(
rrenkert@5764:                 (Double) row[0],
rrenkert@5764:                 (Double) row[1]);
rrenkert@5764:         }
rrenkert@5764:         return widths;
rrenkert@5764:     }
rrenkert@5764: }
rrenkert@5764: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :