001 /* =========================================================== 002 * JFreeChart : a free chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jfreechart/index.html 008 * 009 * This library is free software; you can redistribute it and/or modify it 010 * under the terms of the GNU Lesser General Public License as published by 011 * the Free Software Foundation; either version 2.1 of the License, or 012 * (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but 015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 017 * License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this library; if not, write to the Free Software 021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 022 * USA. 023 * 024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 025 * in the United States and other countries.] 026 * 027 * ---------------------------- 028 * IntervalCategoryDataset.java 029 * ---------------------------- 030 * (C) Copyright 2002-2004, by Eduard Martinescu and Contributors. 031 * 032 * Original Author: Eduard Martinescu; 033 * Contributor(s): David Gilbert (for Object Refinery Limited); 034 * 035 * $Id: IntervalCategoryDataset.java,v 1.2.2.1 2005/10/25 21:29:58 mungady Exp $ 036 * 037 * Changes 038 * ------- 039 * 19-Mar-2002 : Version 1 contributed by Eduard Martinescu. The interface 040 * name and method names have been renamed to be consistent with 041 * existing interfaces (DG); 042 * 06-Jun-2002 : Updated Javadoc comments (DG); 043 * 24-Oct-2002 : Categories and series are now indexed by int or Comparable, 044 * following changes made to the CategoryDataset interface (DG); 045 * 046 */ 047 048 package org.jfree.data.category; 049 050 051 /** 052 * A category dataset that defines a value range for each series/category 053 * combination. 054 * 055 * @author Eduard Martinescu 056 */ 057 public interface IntervalCategoryDataset extends CategoryDataset { 058 059 /** 060 * Returns the start value for the interval for a given series and category. 061 * 062 * @param series the series (zero-based index). 063 * @param category the category (zero-based index). 064 * 065 * @return The start value (possibly <code>null</code>). 066 */ 067 public Number getStartValue(int series, int category); 068 069 /** 070 * Returns the start value for the interval for a given series and category. 071 * 072 * @param series the series key. 073 * @param category the category key. 074 * 075 * @return The start value (possibly <code>null</code>). 076 */ 077 public Number getStartValue(Comparable series, Comparable category); 078 079 /** 080 * Returns the end value for the interval for a given series and category. 081 * 082 * @param series the series (zero-based index). 083 * @param category the category (zero-based index). 084 * 085 * @return The end value (possibly <code>null</code>). 086 */ 087 public Number getEndValue(int series, int category); 088 089 /** 090 * Returns the end value for the interval for a given series and category. 091 * 092 * @param series the series key. 093 * @param category the category key. 094 * 095 * @return The end value (possibly <code>null</code>). 096 */ 097 public Number getEndValue(Comparable series, Comparable category); 098 099 }