/*
* Geotoolkit.org - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2009-2012, Open Source Geospatial Foundation (OSGeo)
* (C) 2009-2012, Geomatys
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotoolkit.metadata.sql;
/**
* Interface for metadata that are implemented by a proxy class.
*
* @author Martin Desruisseaux (Geomatys)
* @version 3.03
*
* @since 3.03
* @module
*/
interface MetadataProxy {
/**
* Returns the identifier (primary key) of this metadata if it is using the
* given source, or {@code null} otherwise.
*/
String identifier(MetadataSource source);
}