Mercurial > dive4elements > river
diff flys-artifacts/src/main/java/org/dive4elements/river/artifacts/model/fixings/FixingsFacet.java @ 5831:bd047b71ab37
Repaired internal references
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Thu, 25 Apr 2013 12:06:39 +0200 |
parents | flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/fixings/FixingsFacet.java@b195fede1c3b |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-artifacts/src/main/java/org/dive4elements/river/artifacts/model/fixings/FixingsFacet.java Thu Apr 25 12:06:39 2013 +0200 @@ -0,0 +1,52 @@ +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(); + } +}