/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2013, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* 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; either version 2.1 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* ---------------------
* DatasetExtension.java
* ---------------------
* (C) Copyright 2013, by Michael Zinsmaier.
*
* Original Author: Michael Zinsmaier;
* Contributor(s): -;
*
* Changes
* -------
* 17-Sep-2013 : Version 1 (MZ);
*
*/
package org.jfree.data.extension;
import java.io.Serializable;
import org.jfree.data.extension.impl.DatasetExtensionManager;
import org.jfree.data.general.Dataset;
/**
* Base interface for dataset extensions. A dataset extension typically stores
* additional information for data items (for example
* {@link DatasetSelectionExtension}). Dataset extensions can be implemented in
* separate helper objects or as part of a datasets. This allows to extend
* older dataset implementations.<br>
* <br>
* The {@link DatasetExtensionManager} class can be used to pair datasets and
* external helper objects and allows to treat paired datasets the same way as
* datasets that directly implement
* a datasetextension.
*
* @author zinsmaie
*/
public interface DatasetExtension extends Serializable {
/**
* @return the dataset that is extended
*/
public Dataset getDataset();
}