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Java > Open Source Codes > org > jfree > data > general > CombinationDataset


1 /* ===========================================================
2  * JFreeChart : a free chart library for the Java(tm) platform
3  * ===========================================================
4  *
5  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
6  *
7  * Project Info: http://www.jfree.org/jfreechart/index.html
8  *
9  * This library is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU Lesser General Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17  * License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22  * USA.
23  *
24  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25  * in the United States and other countries.]
26  *
27  * -----------------------
28  * CombinationDataset.java
29  * -----------------------
30  * (C) Copyright 2001-2004, by Bill Kelemen.
31  *
32  * Original Author: Bill Kelemen;
33  * Contributor(s): -;
34  *
35  * $Id: CombinationDataset.java,v 1.2.2.1 2005/10/25 21:32:29 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 06-Dec-2001 : Version 1 (BK);
40  *
41  */
42
43 package org.jfree.data.general;
44
45 /**
46  * Interface that describes the new methods that any combined dataset needs to
47  * implement. A combined dataset object will combine one or more datasets and
48  * expose a sub-set or union of the combined datasets.
49  *
50  * @author Bill Kelemenm (bill@kelemen-usa.com)
51  */
52 public interface CombinationDataset {
53
54     ///////////////////////////////////////////////////////////////////////////
55 // New methods from CombinationDataset
56 ///////////////////////////////////////////////////////////////////////////
57
58     /**
59      * Returns the parent Dataset of this combination. If there is more than
60      * one parent, or a child is found that is not a combination, then returns
61      * <code>null</code>.
62      *
63      * @return The parent Dataset of this combination.
64      */
65     public SeriesDataset getParent();
66
67     /**
68      * Returns a map or indirect indexing form our series into parent's series.
69      *
70      * @return A map or indirect indexing form our series into parent's series.
71      */
72     public int[] getMap();
73
74 }
75
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