Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/WQTimerange.java @ 7471:fff862f4ef76
Experimental caching of datacage recommendations. The respective hook is called a lot and running the datacage over and over again when loading data can be expensive. So the generated recommendations are cached for some time.
Hopefully this improves the overall speed of loading data from the datacage.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Wed, 30 Oct 2013 15:26:21 +0100 |
parents | af13ceeba52a |
children | 5e38e2924c07 |
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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 java.util.ArrayList; import java.util.Collections; import java.util.List; /** * A collection of triples W,Q,Timerange. * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class WQTimerange extends WQ { /** Used to sort <w,q,timerange> triples. */ public static class TimerangeItem implements Comparable<TimerangeItem> { public double q; public double w; public Timerange timerange; public TimerangeItem (Timerange timerange, double q, double w) { this.timerange = timerange; this.q = q; this.w = w; } /** Sets [w,q] in wq. */ public double[] get(double[] wq) { if (wq.length >= 2) { wq[0] = w; wq[1] = q; } return wq; } @Override public int compareTo(TimerangeItem other) { if (other.timerange.getStart() < timerange.getStart()) { return 1; } else if (other.timerange.getStart() > timerange.getStart()) { return -1; } else if (other.timerange.getEnd() < timerange.getEnd()) { return 1; } else if (other.timerange.getEnd() > timerange.getEnd()){ return -1; } else { return 0; } } } protected List<Timerange> timeranges; public WQTimerange() { super(""); } public WQTimerange(String name) { super(name); timeranges = new ArrayList<Timerange>(); } public void add(double w, double q, Timerange t) { ws.add(w); qs.add(q); timeranges.add(t); } public Timerange getTimerange(int idx) { return timeranges.get(idx); } public Timerange[] getTimeranges() { return timeranges.toArray(new Timerange[timeranges.size()]); } public List<TimerangeItem> sort() { ArrayList<TimerangeItem> items = new ArrayList<TimerangeItem>(timeranges.size()); for (int i = 0, n = size(); i < n; i++) { items.add(new TimerangeItem(getTimerange(i), getQ(i), getW(i))); } Collections.sort(items); return items; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :