Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2013, 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. * * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. * Other names may be trademarks of their respective owners.] * * ------------------------- * GanttCategoryDataset.java * ------------------------- * (C) Copyright 2003-2008, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 16-Sep-2003 : Version 1, based on MultiIntervalCategoryDataset (DG); * 23-Sep-2003 : Fixed Checkstyle issues (DG); * 12-May-2008 : Updated API docs (DG); * */ package org.jfree.data.gantt; import org.jfree.data.category.IntervalCategoryDataset; /** * An extension of the {@link IntervalCategoryDataset} interface that adds * support for multiple sub-intervals. */ public interface GanttCategoryDataset extends IntervalCategoryDataset { /** * Returns the percent complete for a given item. * * @param row the row index (zero-based). * @param column the column index (zero-based). * * @return The percent complete. * * @see #getPercentComplete(Comparable, Comparable) */ public Number getPercentComplete(int row, int column); /** * Returns the percent complete for a given item. * * @param rowKey the row key. * @param columnKey the column key. * * @return The percent complete. * * @see #getPercentComplete(int, int) */ public Number getPercentComplete(Comparable rowKey, Comparable columnKey); /** * Returns the number of sub-intervals for a given item. * * @param row the row index (zero-based). * @param column the column index (zero-based). * * @return The sub-interval count. * * @see #getSubIntervalCount(Comparable, Comparable) */ public int getSubIntervalCount(int row, int column); /** * Returns the number of sub-intervals for a given item. * * @param rowKey the row key. * @param columnKey the column key. * * @return The sub-interval count. * * @see #getSubIntervalCount(int, int) */ public int getSubIntervalCount(Comparable rowKey, Comparable columnKey); /** * Returns the start value of a sub-interval for a given item. * * @param row the row index (zero-based). * @param column the column index (zero-based). * @param subinterval the sub-interval index (zero-based). * * @return The start value (possibly <code>null</code>). * * @see #getEndValue(int, int, int) */ public Number getStartValue(int row, int column, int subinterval); /** * Returns the start value of a sub-interval for a given item. * * @param rowKey the row key. * @param columnKey the column key. * @param subinterval the sub-interval. * * @return The start value (possibly <code>null</code>). * * @see #getEndValue(Comparable, Comparable, int) */ public Number getStartValue(Comparable rowKey, Comparable columnKey, int subinterval); /** * Returns the end value of a sub-interval for a given item. * * @param row the row index (zero-based). * @param column the column index (zero-based). * @param subinterval the sub-interval. * * @return The end value (possibly <code>null</code>). * * @see #getStartValue(int, int, int) */ public Number getEndValue(int row, int column, int subinterval); /** * Returns the end value of a sub-interval for a given item. * * @param rowKey the row key. * @param columnKey the column key. * @param subinterval the sub-interval. * * @return The end value (possibly <code>null</code>). * * @see #getStartValue(Comparable, Comparable, int) */ public Number getEndValue(Comparable rowKey, Comparable columnKey, int subinterval); /** * Returns the percentage complete value of a sub-interval for a given item. * * @param row the row index (zero-based). * @param column the column index (zero-based). * @param subinterval the sub-interval. * * @return The percent complete value (possibly <code>null</code>). * * @see #getPercentComplete(Comparable, Comparable, int) */ public Number getPercentComplete(int row, int column, int subinterval); /** * Returns the percentage complete value of a sub-interval for a given item. * * @param rowKey the row key. * @param columnKey the column key. * @param subinterval the sub-interval. * * @return The percent complete value (possibly <code>null</code>). * * @see #getPercentComplete(int, int, int) */ public Number getPercentComplete(Comparable rowKey, Comparable columnKey, int subinterval); }