001/*
002 *    GeoAPI - Java interfaces for OGC/ISO standards
003 *    Copyright © 2004-2023 Open Geospatial Consortium, Inc.
004 *    http://www.geoapi.org
005 *
006 *    Licensed under the Apache License, Version 2.0 (the "License");
007 *    you may not use this file except in compliance with the License.
008 *    You may obtain a copy of the License at
009 *
010 *        http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *    Unless required by applicable law or agreed to in writing, software
013 *    distributed under the License is distributed on an "AS IS" BASIS,
014 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 *    See the License for the specific language governing permissions and
016 *    limitations under the License.
017 */
018package org.opengis.metadata.spatial;
019
020import java.util.Collection;
021import java.util.Collections;
022import org.opengis.annotation.UML;
023
024import static org.opengis.annotation.Obligation.*;
025import static org.opengis.annotation.Specification.*;
026
027
028/**
029 * Information about the vector spatial objects in the dataset.
030 *
031 * @author  Martin Desruisseaux (IRD)
032 * @version 3.1
033 * @since   2.0
034 */
035@UML(identifier="MD_VectorSpatialRepresentation", specification=ISO_19115)
036public interface VectorSpatialRepresentation extends SpatialRepresentation {
037    /**
038     * Code which identifies the degree of complexity of the spatial relationships.
039     *
040     * @return the degree of complexity of the spatial relationships, or {@code null}.
041     */
042    @UML(identifier="topologyLevel", obligation=OPTIONAL, specification=ISO_19115)
043    default TopologyLevel getTopologyLevel() {
044        return null;
045    }
046
047    /**
048     * Information about the geometric objects used in the dataset.
049     *
050     * @return information about the geometric objects used in the dataset, or {@code null}.
051     */
052    @UML(identifier="geometricObjects", obligation=OPTIONAL, specification=ISO_19115)
053    default Collection<? extends GeometricObjects> getGeometricObjects() {
054        return Collections.emptyList();
055    }
056}