Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2012, 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.] * * -------------------------------- * TestIntervalCategoryDataset.java * -------------------------------- * (C) Copyright 2009, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 10-Sep-2009 : Version 1, based on DefaultCategoryDataset (DG); * */ package org.jfree.data.general; import org.jfree.chart.util.PublicCloneable; import org.jfree.data.KeyedObjects2D; import org.jfree.data.UnknownKeyException; import org.jfree.data.category.IntervalCategoryDataset; import java.io.Serializable; import java.util.List; /** * A test implementation of the {@link IntervalCategoryDataset} interface. */ public class TestIntervalCategoryDataset extends AbstractDataset implements IntervalCategoryDataset, PublicCloneable, Serializable { /** For serialization. */ private static final long serialVersionUID = -8168173757291644622L; /** A storage structure for the data. */ private KeyedObjects2D data; /** * Creates a new (empty) dataset. */ public TestIntervalCategoryDataset() { this.data = new KeyedObjects2D(); } /** * Returns the number of rows in the table. * * @return The row count. * * @see #getColumnCount() */ @Override public int getRowCount() { return this.data.getRowCount(); } /** * Returns the number of columns in the table. * * @return The column count. * * @see #getRowCount() */ @Override public int getColumnCount() { return this.data.getColumnCount(); } /** * Returns a value from the table. * * @param row the row index (zero-based). * @param column the column index (zero-based). * * @return The value (possibly <code>null</code>). * */ @Override public Number getValue(int row, int column) { IntervalDataItem item = (IntervalDataItem) this.data.getObject(row, column); if (item == null) { return null; } return item.getValue(); } /** * Returns the key for the specified row. * * @param row the row index (zero-based). * * @return The row key. * * @see #getRowIndex(Comparable) * @see #getRowKeys() * @see #getColumnKey(int) */ @Override public Comparable getRowKey(int row) { return this.data.getRowKey(row); } /** * Returns the row index for a given key. * * @param key the row key (<code>null</code> not permitted). * * @return The row index. * * @see #getRowKey(int) */ @Override public int getRowIndex(Comparable key) { // defer null argument check return this.data.getRowIndex(key); } /** * Returns the row keys. * * @return The keys. * * @see #getRowKey(int) */ @Override public List getRowKeys() { return this.data.getRowKeys(); } /** * Returns a column key. * * @param column the column index (zero-based). * * @return The column key. * * @see #getColumnIndex(Comparable) */ @Override public Comparable getColumnKey(int column) { return this.data.getColumnKey(column); } /** * Returns the column index for a given key. * * @param key the column key (<code>null</code> not permitted). * * @return The column index. * * @see #getColumnKey(int) */ @Override public int getColumnIndex(Comparable key) { // defer null argument check return this.data.getColumnIndex(key); } /** * Returns the column keys. * * @return The keys. * * @see #getColumnKey(int) */ @Override public List getColumnKeys() { return this.data.getColumnKeys(); } /** * Returns the value for a pair of keys. * * @param rowKey the row key (<code>null</code> not permitted). * @param columnKey the column key (<code>null</code> not permitted). * * @return The value (possibly <code>null</code>). * * @throws UnknownKeyException if either key is not defined in the dataset. * */ @Override public Number getValue(Comparable rowKey, Comparable columnKey) { IntervalDataItem item = (IntervalDataItem) this.data.getObject(rowKey, columnKey); if (item == null) { return null; } return item.getValue(); } /** * Adds a value to the table. Performs the same function as setValue(). * * @param value the value. * @param rowKey the row key. * @param columnKey the column key. * * @see #getValue(Comparable, Comparable) */ public void addItem(Number value, Number lower, Number upper, Comparable rowKey, Comparable columnKey) { IntervalDataItem item = new IntervalDataItem(value, lower, upper); this.data.addObject(item, rowKey, columnKey); fireDatasetChanged(); } /** * Adds a value to the table. * * @param value the value. * @param rowKey the row key. * @param columnKey the column key. * * @see #getValue(Comparable, Comparable) */ public void addItem(double value, double lower, double upper, Comparable rowKey, Comparable columnKey) { addItem(new Double(value), new Double(lower), new Double(upper), rowKey, columnKey); } /** * Adds or updates a value in the table and sends a * {@link DatasetChangeEvent} to all registered listeners. * * @param value the value (<code>null</code> permitted). * @param rowKey the row key (<code>null</code> not permitted). * @param columnKey the column key (<code>null</code> not permitted). * * @see #getValue(Comparable, Comparable) */ public void setItem(Number value, Number lower, Number upper, Comparable rowKey, Comparable columnKey) { IntervalDataItem item = new IntervalDataItem(value, lower, upper); this.data.addObject(item, rowKey, columnKey); fireDatasetChanged(); } /** * Adds or updates a value in the table and sends a * {@link DatasetChangeEvent} to all registered listeners. * * @param value the value. * @param rowKey the row key (<code>null</code> not permitted). * @param columnKey the column key (<code>null</code> not permitted). * * @see #getValue(Comparable, Comparable) */ public void setItem(double value, double lower, double upper, Comparable rowKey, Comparable columnKey) { setItem(new Double(value), new Double(lower), new Double(upper), rowKey, columnKey); } /** * Removes a value from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. * * @param rowKey the row key. * @param columnKey the column key. * */ public void removeItem(Comparable rowKey, Comparable columnKey) { this.data.removeObject(rowKey, columnKey); fireDatasetChanged(); } /** * Removes a row from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. * * @param rowIndex the row index. * * @see #removeColumn(int) */ public void removeRow(int rowIndex) { this.data.removeRow(rowIndex); fireDatasetChanged(); } /** * Removes a row from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. * * @param rowKey the row key. * * @see #removeColumn(Comparable) */ public void removeRow(Comparable rowKey) { this.data.removeRow(rowKey); fireDatasetChanged(); } /** * Removes a column from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. * * @param columnIndex the column index. * * @see #removeRow(int) */ public void removeColumn(int columnIndex) { this.data.removeColumn(columnIndex); fireDatasetChanged(); } /** * Removes a column from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. * * @param columnKey the column key (<code>null</code> not permitted). * * @see #removeRow(Comparable) * * @throws UnknownKeyException if <code>columnKey</code> is not defined * in the dataset. */ public void removeColumn(Comparable columnKey) { this.data.removeColumn(columnKey); fireDatasetChanged(); } /** * Clears all data from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. */ public void clear() { this.data.clear(); fireDatasetChanged(); } /** * Tests this dataset for equality with an arbitrary object. * * @param obj the object (<code>null</code> permitted). * * @return A boolean. */ @Override public boolean equals(Object obj) { if (obj == this) { return true; } if (!(obj instanceof TestIntervalCategoryDataset)) { return false; } TestIntervalCategoryDataset that = (TestIntervalCategoryDataset) obj; if (!getRowKeys().equals(that.getRowKeys())) { return false; } if (!getColumnKeys().equals(that.getColumnKeys())) { return false; } int rowCount = getRowCount(); int colCount = getColumnCount(); for (int r = 0; r < rowCount; r++) { for (int c = 0; c < colCount; c++) { Number v1 = getValue(r, c); Number v2 = that.getValue(r, c); if (v1 == null) { if (v2 != null) { return false; } } else if (!v1.equals(v2)) { return false; } } } return true; } /** * Returns a hash code for the dataset. * * @return A hash code. */ @Override public int hashCode() { return this.data.hashCode(); } /** * Returns a clone of the dataset. * * @return A clone. * * @throws CloneNotSupportedException if there is a problem cloning the * dataset. */ @Override public Object clone() throws CloneNotSupportedException { TestIntervalCategoryDataset clone = (TestIntervalCategoryDataset) super.clone(); clone.data = (KeyedObjects2D) this.data.clone(); return clone; } @Override public Number getStartValue(int series, int category) { IntervalDataItem item = (IntervalDataItem) this.data.getObject(series, category); if (item == null) { return null; } return item.getLowerBound(); } @Override public Number getStartValue(Comparable series, Comparable category) { IntervalDataItem item = (IntervalDataItem) this.data.getObject(series, category); if (item == null) { return null; } return item.getLowerBound(); } @Override public Number getEndValue(int series, int category) { IntervalDataItem item = (IntervalDataItem) this.data.getObject(series, category); if (item == null) { return null; } return item.getUpperBound(); } @Override public Number getEndValue(Comparable series, Comparable category) { IntervalDataItem item = (IntervalDataItem) this.data.getObject(series, category); if (item == null) { return null; } return item.getUpperBound(); } }