/*$************************************************************************************************
 **
 ** $Id: DigitalTransferOptions.java 831 2006-05-01 00:27:23Z Desruisseaux $
 **
 ** $URL: http://svn.code.sf.net/p/geoapi/code/branches/2.0.x/geoapi/src/main/java/org/opengis/metadata/distribution/DigitalTransferOptions.java $
 **
 ** Copyright (C) 2004-2005 Open GIS Consortium, Inc.
 ** All Rights Reserved. http://www.opengis.org/legal/
 **
 *************************************************************************************************/
package org.opengis.metadata.distribution;

// J2SE direct dependencies
import java.util.Collection;

// OpenGIS direct dependencies
import org.opengis.util.InternationalString;
import org.opengis.metadata.citation.OnLineResource;

// Annotations
import org.opengis.annotation.UML;
import org.opengis.annotation.Profile;
import static org.opengis.annotation.Obligation.*;
import static org.opengis.annotation.Specification.*;
import static org.opengis.annotation.ComplianceLevel.*;
import static org.opengis.annotation.Specification.*;


/**
 * Technical means and media by which a resource is obtained from the distributor.
 *
 * @version Abstract specification 5.0
 * @author Martin Desruisseaux (IRD)
 * @since GeoAPI 2.0
 */
@Profile (level=CORE)
@UML(identifier="MD_DigitalTransferOptions", specification=ISO_19115)
public interface DigitalTransferOptions {
    /**
     * Tiles, layers, geographic areas, etc., in which data is available.
     */
    @UML(identifier="unitsOfDistribution", obligation=OPTIONAL, specification=ISO_19115)
    InternationalString getUnitsOfDistribution();

    /**
     * Estimated size of a unit in the specified transfer format, expressed in megabytes.
     * The transfer size is > 0.0.
     * Returns {@code null} if the transfer size is unknown.
     */
    @UML(identifier="transferSize", obligation=OPTIONAL, specification=ISO_19115)
    Number getTransferSize();

    /**
     * Information about online sources from which the resource can be obtained.
     */
    @Profile (level=CORE)
    @UML(identifier="onLine", obligation=OPTIONAL, specification=ISO_19115)
    Collection getOnLines();

    /**
     * Information about offline media on which the resource can be obtained.
     */
    @UML(identifier="offLine", obligation=OPTIONAL, specification=ISO_19115)
    Medium getOffLine();
}