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1: /* =========================================================== 2: * JFreeChart : a free chart library for the Java(tm) platform 3: * =========================================================== 4: * 5: * (C) Copyright 2000-2007, 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: * AbstractSeriesDataset.java 29: * -------------------------- 30: * (C) Copyright 2001-2007, by Object Refinery Limited. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): -; 34: * 35: * Changes 36: * ------- 37: * 17-Nov-2001 : Version 1 (DG); 38: * 28-Mar-2002 : Implemented SeriesChangeListener interface (DG); 39: * 04-Oct-2002 : Fixed errors reported by Checkstyle (DG); 40: * 04-Feb-2003 : Removed redundant methods (DG); 41: * 27-Mar-2003 : Implemented Serializable (DG); 42: * 43: */ 44: 45: package org.jfree.data.general; 46: 47: import java.io.Serializable; 48: 49: /** 50: * An abstract implementation of the {@link SeriesDataset} interface, 51: * containing a mechanism for registering change listeners. 52: */ 53: public abstract class AbstractSeriesDataset extends AbstractDataset 54: implements SeriesDataset, 55: SeriesChangeListener, 56: Serializable { 57: 58: /** For serialization. */ 59: private static final long serialVersionUID = -6074996219705033171L; 60: 61: /** 62: * Creates a new dataset. 63: */ 64: protected AbstractSeriesDataset() { 65: super(); 66: } 67: 68: /** 69: * Returns the number of series in the dataset. 70: * 71: * @return The series count. 72: */ 73: public abstract int getSeriesCount(); 74: 75: /** 76: * Returns the key for a series. 77: * <p> 78: * If <code>series</code> is not within the specified range, the 79: * implementing method should throw an {@link IndexOutOfBoundsException} 80: * (preferred) or an {@link IllegalArgumentException}. 81: * 82: * @param series the series index (in the range <code>0</code> to 83: * <code>getSeriesCount() - 1</code>). 84: * 85: * @return The series key. 86: */ 87: public abstract Comparable getSeriesKey(int series); 88: 89: /** 90: * Returns the index of the named series, or -1. 91: * 92: * @param seriesKey the series key (<code>null</code> permitted). 93: * 94: * @return The index. 95: */ 96: public int indexOf(Comparable seriesKey) { 97: int seriesCount = getSeriesCount(); 98: for (int s = 0; s < seriesCount; s++) { 99: if (getSeriesKey(s).equals(seriesKey)) { 100: return s; 101: } 102: } 103: return -1; 104: } 105: 106: /** 107: * Called when a series belonging to the dataset changes. 108: * 109: * @param event information about the change. 110: */ 111: public void seriesChanged(SeriesChangeEvent event) { 112: fireDatasetChanged(); 113: } 114: 115: }