/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2007, 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.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ---------------------------
* DefaultCategoryDataset.java
* ---------------------------
* (C) Copyright 2002-2007, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 21-Jan-2003 : Added standard header, and renamed DefaultCategoryDataset (DG);
* 13-Mar-2003 : Inserted DefaultKeyedValues2DDataset into class hierarchy (DG);
* 06-Oct-2003 : Added incrementValue() method (DG);
* 05-Apr-2004 : Added clear() method (DG);
* 18-Aug-2004 : Moved from org.jfree.data --> org.jfree.data.category (DG);
* ------------- JFREECHART 1.0.x ---------------------------------------------
* 26-Feb-2007 : Updated API docs (DG);
* 08-Mar-2007 : Implemented clone() (DG);
*
*/
package org.jfree.data.category;
import java.io.Serializable;
import java.util.List;
import org.jfree.data.DefaultKeyedValues2D;
import org.jfree.data.UnknownKeyException;
import org.jfree.data.general.AbstractDataset;
import org.jfree.data.general.DatasetChangeEvent;
/**
* A default implementation of the {@link CategoryDataset} interface.
*/
public class DefaultCategoryDataset extends AbstractDataset
implements CategoryDataset, Serializable {
/** For serialization. */
private static final long serialVersionUID = -8168173757291644622L;
/** A storage structure for the data. */
private DefaultKeyedValues2D data;
/**
* Creates a new (empty) dataset.
*/
public DefaultCategoryDataset() {
this.data = new DefaultKeyedValues2D();
}
/**
* Returns the number of rows in the table.
*
* @return The row count.
*
* @see #getColumnCount()
*/
public int getRowCount() {
return this.data.getRowCount();
}
/**
* Returns the number of columns in the table.
*
* @return The column count.
*
* @see #getRowCount()
*/
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>).
*
* @see #addValue(Number, Comparable, Comparable)
* @see #removeValue(Comparable, Comparable)
*/
public Number getValue(int row, int column) {
return this.data.getValue(row, column);
}
/**
* 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)
*/
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)
*/
public int getRowIndex(Comparable key) {
// defer null argument check
return this.data.getRowIndex(key);
}
/**
* Returns the row keys.
*
* @return The keys.
*
* @see #getRowKey(int)
*/
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)
*/
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)
*/
public int getColumnIndex(Comparable key) {
// defer null argument check
return this.data.getColumnIndex(key);
}
/**
* Returns the column keys.
*
* @return The keys.
*
* @see #getColumnKey(int)
*/
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.
*
* @see #addValue(Number, Comparable, Comparable)
*/
public Number getValue(Comparable rowKey, Comparable columnKey) {
return this.data.getValue(rowKey, columnKey);
}
/**
* 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)
* @see #removeValue(Comparable, Comparable)
*/
public void addValue(Number value, Comparable rowKey,
Comparable columnKey) {
this.data.addValue(value, 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 addValue(double value, Comparable rowKey,
Comparable columnKey) {
addValue(new Double(value), 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 setValue(Number value, Comparable rowKey,
Comparable columnKey) {
this.data.setValue(value, 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 setValue(double value, Comparable rowKey,
Comparable columnKey) {
setValue(new Double(value), rowKey, columnKey);
}
/**
* Adds the specified value to an existing value in the dataset (if the
* existing value is <code>null</code>, it is treated as if it were 0.0).
*
* @param value the value.
* @param rowKey the row key (<code>null</code> not permitted).
* @param columnKey the column key (<code>null</code> not permitted).
*
* @throws UnknownKeyException if either key is not defined in the dataset.
*/
public void incrementValue(double value,
Comparable rowKey,
Comparable columnKey) {
double existing = 0.0;
Number n = getValue(rowKey, columnKey);
if (n != null) {
existing = n.doubleValue();
}
setValue(existing + value, 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.
*
* @see #addValue(Number, Comparable, Comparable)
*/
public void removeValue(Comparable rowKey, Comparable columnKey) {
this.data.removeValue(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.
*/
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof CategoryDataset)) {
return false;
}
CategoryDataset that = (CategoryDataset) 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.
*/
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.
*/
public Object clone() throws CloneNotSupportedException {
DefaultCategoryDataset clone = (DefaultCategoryDataset) super.clone();
clone.data = (DefaultKeyedValues2D) this.data.clone();
return clone;
}
}
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