Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/LocationProvider.java @ 8755:30b1ddadf275
(issue1801) Unify reference gauge finding code
The basic way as described in the method comment of the
determineRefGauge method is now used in the WINFOArtifact,
MainValuesService and RiverUtils.getGauge method.
RiverUtils.getGauge previously just returned the first
gauge found. While this is now a behavior change I believe
that it is always more correct then the undeterministic
behavior of the previous implmenentation.
author | Andre Heinecke <andre.heinecke@intevation.de> |
---|---|
date | Wed, 24 Jun 2015 14:07:26 +0200 |
parents | af13ceeba52a |
children | 0a5239a1e46e |
line wrap: on
line source
/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.artifacts.model; import net.sf.ehcache.Cache; import net.sf.ehcache.Element; import org.apache.log4j.Logger; import org.dive4elements.river.model.Annotation; import org.dive4elements.river.model.FastAnnotations; import org.dive4elements.river.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 :