Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/fixings/FixingsFacet.java @ 6152:0587819960c3
Waterlevel differences & bed height differences: Add new model LinearInterpolated intented to unify the two very similiar calculations. The focus of the current implementation is correctness and not speed! The fact that the data sets more mostly sorted by station is not exploited. Doing so would improve performance significantly.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Sun, 02 Jun 2013 17:52:53 +0200 |
parents | af13ceeba52a |
children | a5bd0a5b8efd |
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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.fixings; import org.dive4elements.artifacts.CallContext; import org.dive4elements.river.artifacts.model.DataFacet; import org.dive4elements.river.artifacts.states.DefaultState.ComputeType; /** * Facet to access the current Km from the context safely * * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a> */ public class FixingsFacet extends DataFacet { public static final Double INVALID_KM = Double.valueOf(-1d); public static final String CURRENT_KM = "currentKm"; public FixingsFacet() { } public FixingsFacet(String name, String description) { super(0, name, description, ComputeType.ADVANCE, null, null); } public FixingsFacet( int index, String name, String description, ComputeType type, String hash, String stateId ) { super(index, name, description, type, hash, stateId); } /** * Returns the current km from the context. * If the context is null or doesn't contain a currentKm then a double value of -1 will * be returned. * @param context The CallContext instance * @return the current km as double */ protected double getCurrentKm(CallContext context) { if (context == null) { return INVALID_KM; } Double dkm = (Double)context.getContextValue(CURRENT_KM); if (dkm == null) { return INVALID_KM; } return dkm.doubleValue(); } }