/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2011, Open Source Geospatial Foundation (OSGeo)
* (C) 2003-2005, Open Geospatial Consortium Inc.
*
* All Rights Reserved. http://www.opengis.org/legal/
*/
package org.opengis.referencing.datum;
import java.util.Date;
import org.opengis.util.InternationalString;
import org.opengis.annotation.UML;
import static org.opengis.annotation.Obligation.*;
import static org.opengis.annotation.Specification.*;
/**
* A temporal datum defines the origin of a temporal coordinate reference system.
*
*
* @source $URL: http://svn.osgeo.org/geotools/branches/2.7.x/modules/library/opengis/src/main/java/org/opengis/referencing/datum/TemporalDatum.java $
* @version <A HREF="http://portal.opengeospatial.org/files/?artifact_id=6716">Abstract specification 2.0</A>
* @author Martin Desruisseaux (IRD)
* @since GeoAPI 1.0
*/
@UML(identifier="CD_TemporalDatum", specification=ISO_19111)
public interface TemporalDatum extends Datum {
/**
* The date and time origin of this temporal datum.
*
* @return The date and time origin of this temporal datum.
*/
@UML(identifier="origin", obligation=MANDATORY, specification=ISO_19111)
Date getOrigin();
/**
* This attribute is defined in the {@link Datum} parent interface,
* but is not used by a temporal datum.
*
* @return Always {@code null}.
*/
@UML(identifier="anchorPoint", obligation=FORBIDDEN, specification=ISO_19111)
InternationalString getAnchorPoint();
/**
* This attribute is defined in the {@link Datum} parent interface,
* but is not used by a temporal datum.
*
* @return Always {@code null}.
*/
@UML(identifier="realizationEpoch", obligation=FORBIDDEN, specification=ISO_19111)
Date getRealizationEpoch();
}