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Java > Open Source Codes > de > progra > charting > model > DataSet


1 /*
2     JOpenChart Java Charting Library and Toolkit
3     Copyright (C) 2001 Sebastian Müller
4     http://jopenchart.sourceforge.net
5
6     This library is free software; you can redistribute it and/or
7     modify it under the terms of the GNU Lesser General Public
8     License as published by the Free Software Foundation; either
9     version 2.1 of the License, or (at your option) any later version.
10
11     This library is distributed in the hope that it will be useful,
12     but WITHOUT ANY WARRANTY; without even the implied warranty of
13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14     Lesser General Public License for more details.
15
16     You should have received a copy of the GNU Lesser General Public
17     License along with this library; if not, write to the Free Software
18     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19
20     DataSet.java
21     Created on 1. Juli 2001, 21:04
22 */
23
24 package de.progra.charting.model;
25
26 /**
27  * An interface used to encapsulate the DataSets in a ChartDataModel.
28  * It's main objective is to store a DataSet to Axis binding.
29  * @author mueller
30  * @version 1.0
31  */
32 public interface DataSet {
33     
34     /** Determines the length of the DataSet
35      * @return an int equal to the length
36      */
37     public int getDataSetLength();
38     
39     /** Determines the column value at a specific DataSet index.
40      * @param index the column index
41      * @return an Object with the column value
42      */
43     public Object JavaDoc getColumnValueAt(int index);
44     
45     /** Sets the column value
46      * @param index the column index
47      * @param col the column value
48      */
49     public void setColumnValueAt(int index, Object JavaDoc col);
50     
51     /** Returns a value in the DataSet
52      * @param index the DataSet index
53      * @return an Object with the value.
54      */
55     public Object JavaDoc getValueAt(int index);
56     
57     /** Stores a value in the DataSet.
58      * @param index the DataSet index
59      * @param val the value to be stored
60      */
61     public void setValueAt(int index, Object JavaDoc val);
62     
63     /** Sets the axis this DataSet is attached to.
64      * @param yaxis the axis constant.
65      */
66     public void setYAxis(int yaxis);
67     
68     /** Returns the axis to which this DataSet is attached.
69      * @return the axis constant
70      */
71     public int getYAxis();
72     
73     /** Returns the Title of the DataSet.
74      * @return a String containing the DataSet's title.
75      */
76     public String JavaDoc getTitle();
77     
78     /** Sets the DataSet's title.
79      * @param title the String title for the DataSet
80      */
81     public void setTitle(String JavaDoc title);
82 }
83
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