Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/LocationProvider.java @ 8723:686d8876edf9
(issue1754) Fix Radius calculation for filtered (smoothed) facets
To know the acutal extend of the Domain axis shown we need
to know all data in the diagram as the acutal extend is
the data point needed to calculate a Radius confusingly configured
in zoom-scales we have to add all data first and
then add the real filtered facets in a postprocessing step.
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Wed, 29 Apr 2015 11:56:04 +0200 |
parents | af13ceeba52a |
children | 0a5239a1e46e |
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/* 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 :