Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/LocationProvider.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 | efb067ab2ca4 |
children |
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package de.intevation.flys.artifacts.model; import net.sf.ehcache.Cache; import net.sf.ehcache.Element; import org.apache.log4j.Logger; import de.intevation.flys.model.Annotation; import de.intevation.flys.model.FastAnnotations; import de.intevation.flys.artifacts.cache.CacheFactory; /** Make FastAnnotations (db unbound) available. */ public class LocationProvider { private static final Logger log = Logger.getLogger(LocationProvider.class); public static final String CACHE_KEY = "location-provider"; public static final String PREFIX = "lp-"; private LocationProvider() { } public static String getLocation(String river, double km) { FastAnnotations fas = getAnnotations(river, km); FastAnnotations.Annotation an = fas.findByKm(km); return an != null ? an.getPosition() : null; } public static FastAnnotations getAnnotations(String river) { return getAnnotations(river, Double.MAX_VALUE); } protected static FastAnnotations getAnnotations(String river, double km) { // TODO issue880: Make annotations available _per type_ Cache cache = CacheFactory.getCache(CACHE_KEY); if (cache == null) { return uncachedAnnotations(river, km); } String key = PREFIX + river; Element element = cache.get(key); if (element != null) { return (FastAnnotations)element.getValue(); } FastAnnotations fas = uncachedAnnotations(river, Double.MAX_VALUE); cache.put(new Element(key, fas)); return fas; } protected static FastAnnotations uncachedAnnotations( String river, double km ) { if (km != Double.MAX_VALUE) { // XXX Fake it by using a standard Annotation. Annotation annotation = AnnotationsFactory.getAnnotation(river, km); if (annotation != null) { FastAnnotations.Annotation fa = new FastAnnotations.Annotation( km, Double.NaN, annotation.getPosition().getValue(), null, null, Double.NaN, Double.NaN); return new FastAnnotations( new FastAnnotations.Annotation [] { fa }); } return new FastAnnotations(new FastAnnotations.Annotation[0]); } long startTime = System.currentTimeMillis(); FastAnnotations fas = new FastAnnotations(river); long stopTime = System.currentTimeMillis(); if (log.isDebugEnabled()) { log.debug("Loading locations took " + (stopTime-startTime)/1000f + " secs."); } return fas; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :