001 /*
002 * GeoAPI - Java interfaces for OGC/ISO standards
003 * http://www.geoapi.org
004 *
005 * Copyright (C) 2004-2012 Open Geospatial Consortium, Inc.
006 * All Rights Reserved. http://www.opengeospatial.org/ogc/legal
007 *
008 * Permission to use, copy, and modify this software and its documentation, with
009 * or without modification, for any purpose and without fee or royalty is hereby
010 * granted, provided that you include the following on ALL copies of the software
011 * and documentation or portions thereof, including modifications, that you make:
012 *
013 * 1. The full text of this NOTICE in a location viewable to users of the
014 * redistributed or derivative work.
015 * 2. Notice of any changes or modifications to the OGC files, including the
016 * date changes were made.
017 *
018 * THIS SOFTWARE AND DOCUMENTATION IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE
019 * NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
020 * TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT
021 * THE USE OF THE SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY THIRD PARTY
022 * PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS.
023 *
024 * COPYRIGHT HOLDERS WILL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL OR
025 * CONSEQUENTIAL DAMAGES ARISING OUT OF ANY USE OF THE SOFTWARE OR DOCUMENTATION.
026 *
027 * The name and trademarks of copyright holders may NOT be used in advertising or
028 * publicity pertaining to the software without specific, written prior permission.
029 * Title to copyright in this software and any associated documentation will at all
030 * times remain with copyright holders.
031 */
032 package org.opengis.referencing.crs;
033
034 import org.opengis.referencing.datum.Datum;
035 import org.opengis.referencing.cs.CoordinateSystem;
036 import org.opengis.annotation.UML;
037
038 import static org.opengis.annotation.Obligation.*;
039 import static org.opengis.annotation.Specification.*;
040
041
042 /**
043 * Abstract coordinate reference system, consisting of a single
044 * {@linkplain CoordinateSystem Coordinate System} and a single
045 * {@linkplain Datum Datum} (as opposed to {@linkplain CompoundCRS Compound CRS}).
046 * <p>
047 * A coordinate reference system consists of an ordered sequence of coordinate system
048 * axes that are related to the earth through a datum. A coordinate reference system
049 * is defined by one datum and by one coordinate system. Most coordinate reference system
050 * do not move relative to the earth, except for engineering coordinate reference systems
051 * defined on moving platforms such as cars, ships, aircraft, and spacecraft.
052 * <p>
053 * Coordinate reference systems are commonly divided into sub-types. The common classification
054 * criterion for sub-typing of coordinate reference systems is the way in which they deal with
055 * earth curvature. This has a direct effect on the portion of the earth's surface that can be
056 * covered by that type of CRS with an acceptable degree of error. The exception to the rule is
057 * the subtype "Temporal" which has been added by analogy.
058 *
059 * @author Martin Desruisseaux (IRD)
060 * @version 3.0
061 * @since 2.0
062 *
063 * @see org.opengis.referencing.cs.CoordinateSystem
064 * @see org.opengis.referencing.datum.Datum
065 *
066 * @navassoc 1 - - Datum
067 */
068 @UML(identifier="SC_SingleCRS", specification=ISO_19111)
069 public interface SingleCRS extends CoordinateReferenceSystem {
070 /**
071 * Returns the coordinate system.
072 */
073 @Override
074 @UML(identifier="coordinateSystem", obligation=MANDATORY, specification=ISO_19111)
075 CoordinateSystem getCoordinateSystem();
076
077 /**
078 * Returns the datum.
079 *
080 * @return The datum.
081 */
082 @UML(identifier="datum", obligation=OPTIONAL, specification=ISO_19111)
083 Datum getDatum();
084 }