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.geometry;
033    
034    import org.opengis.geometry.complex.Complex;
035    import org.opengis.annotation.UML;
036    
037    import static org.opengis.annotation.Obligation.*;
038    import static org.opengis.annotation.Specification.*;
039    
040    
041    /**
042     * The abstract root data type for all the data types used to represent the boundary of geometric
043     * objects. Any subclass of {@link Geometry} will use a subclass of {@code Boundary} to
044     * represent its boundary through the operation {@link Geometry#getBoundary}. By the nature of
045     * geometry, boundary objects are cycles.
046     *
047     * @version <A HREF="http://www.opengeospatial.org/standards/as">ISO 19107</A>
048     * @author Martin Desruisseaux (IRD)
049     * @since GeoAPI 1.0
050     */
051    @UML(identifier="GM_Boundary", specification=ISO_19107)
052    public interface Boundary extends Complex {
053        /**
054         * Always returns {@code true} since boundary objects are cycles.
055         *
056         * @return Always {@code true}.
057         */
058        @UML(identifier="isCycle", obligation=MANDATORY, specification=ISO_19107)
059        boolean isCycle();
060    }