Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/WQKms.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 | 3c4efd4b2c19 |
children | 7e5d4a0d9bad |
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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 org.dive4elements.river.utils.DataUtil; import org.dive4elements.river.utils.DoubleUtil; import gnu.trove.TDoubleArrayList; import org.apache.log4j.Logger; /** * This class represents a pool of data triples that consists of 'W', 'Q' and * 'KM' data. * * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class WQKms extends WQ implements WKms, QKms { private static Logger logger = Logger.getLogger(WQKms.class); /** The array that contains the 'KMs' values. */ protected TDoubleArrayList kms; public WQKms() { this(""); } public WQKms(String name) { super(name); this.kms = new TDoubleArrayList(); } public WQKms(int capacity) { this(capacity, ""); } public WQKms(int capacity, String name) { super(capacity, name); this.kms = new TDoubleArrayList(capacity); } public WQKms(double [] kms, double [] qs, double [] ws) { this(kms, qs, ws, ""); } public WQKms(double [] kms, double [] qs, double [] ws, String name) { this(kms, qs, ws, name, 0); } public WQKms(double []kms, WQ wq) { this(kms, wq.getQs(), wq.getWs(), wq.getName(), wq.getReferenceSystem()); } public WQKms(double [] kms, double [] qs, double [] ws, String name, int wReferenceSystem) { super(qs, ws, name); this.kms = new TDoubleArrayList(kms); setReferenceSystem(wReferenceSystem); } @Override public void removeNaNs() { DoubleUtil.removeNaNs(new TDoubleArrayList [] { ws, qs, kms }); } /** * Adds a new row to this data pool. * * @param w a W. * @param q a Q. * @param km a kms. */ public void add(double w, double q, double km) { super.add(w, q); kms.add(km); } @Override public double [] get(int idx) { return get(idx, new double [3]); } /** * This method returns a triple of W, Q and Kms in a single 3dim array. * * @param idx The position of the triple. * @param dst destination array * * @return a triple of [W, Q, Kms] in dst. */ @Override public double [] get(int idx, double [] dst) { dst[0] = ws .getQuick(idx); dst[1] = qs .getQuick(idx); dst[2] = kms.getQuick(idx); return dst; } @Override public double getKm(int idx) { return kms.getQuick(idx); } @Override public TDoubleArrayList allKms() { return kms; } @Override public TDoubleArrayList allWs() { return ws; } @Override public TDoubleArrayList allQs() { return qs; } public double[] getKms() { return kms.toNativeArray(); } /** * Returns a string that consist of the first and last kilometer. * * @return a string that consist of the first and last kilometer. */ public String toString() { double from = getKm(0); double to = getKm(size()-1); return from + " - " + to; } /** * Returns an array of two double values the first and last kilometer. * * @return a double array with the first and last km */ public double[] getFirstLastKM() { /* Behold the first km might be larger then the last! */ return new double[] {getKm(0), getKm(size()-1)}; } @Override public boolean guessRTLData() { return DataUtil.guessSameDirectionData(ws, allKms()); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :