001 /* =========================================================== 002 * JFreeChart : a free chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C) Copyright 2000-2007, 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 2002-2007, by Eduard Martinescu and Contributors. 031 * 032 * Original Author: Eduard Martinescu; 033 * Contributor(s): David Gilbert (for Object Refinery Limited); 034 * 035 * Changes 036 * ------- 037 * 19-Mar-2002 : Version 1 contributed by Eduard Martinescu. The interface 038 * name and method names have been renamed to be consistent with 039 * existing interfaces (DG); 040 * 06-Jun-2002 : Updated Javadoc comments (DG); 041 * 24-Oct-2002 : Categories and series are now indexed by int or Comparable, 042 * following changes made to the CategoryDataset interface (DG); 043 * 044 */ 045 046 package org.jfree.data.category; 047 048 049 /** 050 * A category dataset that defines a value range for each series/category 051 * combination. 052 */ 053 public interface IntervalCategoryDataset extends CategoryDataset { 054 055 /** 056 * Returns the start value for the interval for a given series and category. 057 * 058 * @param series the series (zero-based index). 059 * @param category the category (zero-based index). 060 * 061 * @return The start value (possibly <code>null</code>). 062 */ 063 public Number getStartValue(int series, int category); 064 065 /** 066 * Returns the start value for the interval for a given series and category. 067 * 068 * @param series the series key. 069 * @param category the category key. 070 * 071 * @return The start value (possibly <code>null</code>). 072 */ 073 public Number getStartValue(Comparable series, Comparable category); 074 075 /** 076 * Returns the end value for the interval for a given series and category. 077 * 078 * @param series the series (zero-based index). 079 * @param category the category (zero-based index). 080 * 081 * @return The end value (possibly <code>null</code>). 082 */ 083 public Number getEndValue(int series, int category); 084 085 /** 086 * Returns the end value for the interval for a given series and category. 087 * 088 * @param series the series key. 089 * @param category the category key. 090 * 091 * @return The end value (possibly <code>null</code>). 092 */ 093 public Number getEndValue(Comparable series, Comparable category); 094 095 }