Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/utils/UniqueDateFormatter.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 | 90f66b4fc34d |
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.utils; import java.text.DateFormat; import java.util.Collection; import java.util.Date; import java.util.HashMap; import java.util.Map; import org.apache.log4j.Logger; public class UniqueDateFormatter { private static Logger log = Logger.getLogger(UniqueDateFormatter.class); private DateFormat df; private DateFormat lf; private Map<String, int[]> collisions; public UniqueDateFormatter( DateFormat df, DateFormat lf, Collection<Date> dates ) { this.df = df; this.lf = lf; collisions = build(dates); } private Map<String, int []> build(Collection<Date> dates) { Map<String, int []> collisions = new HashMap<String, int[]>(); for (Date d: dates) { String s = df.format(d); int [] count = collisions.get(s); if (count == null) { collisions.put(s, count = new int[1]); } if (++count[0] > 1) { log.debug("date collsion found: " + d); } } return collisions; } public String format(Date date) { String s = df.format(date); int [] count = collisions.get(s); return count == null || count[0] < 2 ? s : lf.format(date); } }