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jfreechart example source code file (KeyedValues2D.java)

This example jfreechart source code file (KeyedValues2D.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

comparable, comparable, keyedvalues2d, list, list, number, number, util, values2d, values2d

The jfreechart KeyedValues2D.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, 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.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * ------------------
 * KeyedValues2D.java
 * ------------------
 * (C) Copyright 2002-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 28-Oct-2002 : Version 1 (DG);
 * 12-Jan-2005 : Updated Javadocs (DG);
 *
 */

package org.jfree.data;

import java.util.List;

/**
 * An extension of the {@link Values2D} interface where a unique key is
 * associated with the row and column indices.
 */
public interface KeyedValues2D extends Values2D {

    /**
     * Returns the row key for a given index.
     *
     * @param row  the row index (zero-based).
     *
     * @return The row key.
     *
     * @throws IndexOutOfBoundsException if <code>row is out of bounds.
     */
    public Comparable getRowKey(int row);

    /**
     * Returns the row index for a given key.
     *
     * @param key  the row key.
     *
     * @return The row index, or <code>-1 if the key is unrecognised.
     */
    public int getRowIndex(Comparable key);

    /**
     * Returns the row keys.
     *
     * @return The keys.
     */
    public List getRowKeys();

    /**
     * Returns the column key for a given index.
     *
     * @param column  the column index (zero-based).
     *
     * @return The column key.
     *
     * @throws IndexOutOfBoundsException if <code>row is out of bounds.
     */
    public Comparable getColumnKey(int column);

    /**
     * Returns the column index for a given key.
     *
     * @param key  the column key.
     *
     * @return The column index, or <code>-1 if the key is unrecognised.
     */
    public int getColumnIndex(Comparable key);

    /**
     * Returns the column keys.
     *
     * @return The keys.
     */
    public List getColumnKeys();

    /**
     * Returns the value associated with the specified keys.
     *
     * @param rowKey  the row key (<code>null not permitted).
     * @param columnKey  the column key (<code>null not permitted).
     *
     * @return The value.
     *
     * @throws UnknownKeyException if either key is not recognised.
     */
    public Number getValue(Comparable rowKey, Comparable columnKey);

}

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