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JFreeChart is a class library, written in Java, for generating charts.
Utilising the Java2D API, it supports a wide range of chart types including
bar charts, pie charts, line charts, XY-plots, time series plots, Sankey charts
and more.
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2011, 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.]
*
* --------------------------
* DefaultTableXYDataset.java
* --------------------------
* (C) Copyright 2003-2009, by Richard Atkinson and Contributors.
*
* Original Author: Richard Atkinson;
* Contributor(s): Jody Brownell;
* David Gilbert (for Object Refinery Limited);
* Andreas Schroeder;
*
* Changes:
* --------
* 27-Jul-2003 : XYDataset that forces each series to have a value for every
* X-point which is essential for stacked XY area charts (RA);
* 18-Aug-2003 : Fixed event notification when removing and updating
* series (RA);
* 22-Sep-2003 : Functionality moved from TableXYDataset to
* DefaultTableXYDataset (RA);
* 23-Dec-2003 : Added patch for large datasets, submitted by Jody
* Brownell (DG);
* 16-Feb-2004 : Added pruning methods (DG);
* 31-Mar-2004 : Provisional implementation of IntervalXYDataset (AS);
* 01-Apr-2004 : Sound implementation of IntervalXYDataset (AS);
* 05-May-2004 : Now extends AbstractIntervalXYDataset (DG);
* 15-Jul-2004 : Switched getX() with getXValue() and getY() with
* getYValue() (DG);
* 18-Aug-2004 : Moved from org.jfree.data --> org.jfree.data.xy (DG);
* 11-Jan-2005 : Removed deprecated code in preparation for the 1.0.0
* release (DG);
* 05-Oct-2005 : Made the interval delegate a dataset listener (DG);
* 02-Feb-2007 : Removed author tags all over JFreeChart sources (DG);
* 22-Apr-2008 : Implemented PublicCloneable (DG);
* 10-Jun-2009 : Simplified getX() and getY() (DG);
*
*/
package org.jfree.data.xy;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import org.jfree.data.DomainInfo;
import org.jfree.data.Range;
import org.jfree.data.general.DatasetChangeEvent;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.data.general.SeriesChangeEvent;
import org.jfree.util.ObjectUtilities;
import org.jfree.util.PublicCloneable;
/**
* An {@link XYDataset} where every series shares the same x-values (required
* for generating stacked area charts).
*/
public class DefaultTableXYDataset extends AbstractIntervalXYDataset
implements TableXYDataset, IntervalXYDataset, DomainInfo,
PublicCloneable {
/**
* Storage for the data - this list will contain zero, one or many
* XYSeries objects.
*/
private List data = null;
/** Storage for the x values. */
private HashSet xPoints = null;
/** A flag that controls whether or not events are propogated. */
private boolean propagateEvents = true;
/** A flag that controls auto pruning. */
private boolean autoPrune = false;
/** The delegate used to control the interval width. */
private IntervalXYDelegate intervalDelegate;
/**
* Creates a new empty dataset.
*/
public DefaultTableXYDataset() {
this(false);
}
/**
* Creates a new empty dataset.
*
* @param autoPrune a flag that controls whether or not x-values are
* removed whenever the corresponding y-values are all
* null.
*/
public DefaultTableXYDataset(boolean autoPrune) {
this.autoPrune = autoPrune;
this.data = new ArrayList();
this.xPoints = new HashSet();
this.intervalDelegate = new IntervalXYDelegate(this, false);
addChangeListener(this.intervalDelegate);
}
/**
* Returns the flag that controls whether or not x-values are removed from
* the dataset when the corresponding y-values are all null.
*
* @return A boolean.
*/
public boolean isAutoPrune() {
return this.autoPrune;
}
/**
* Adds a series to the collection and sends a {@link DatasetChangeEvent}
* to all registered listeners. The series should be configured to NOT
* allow duplicate x-values.
*
* @param series the series (null not permitted).
*/
public void addSeries(XYSeries series) {
if (series == null) {
throw new IllegalArgumentException("Null 'series' argument.");
}
if (series.getAllowDuplicateXValues()) {
throw new IllegalArgumentException(
"Cannot accept XYSeries that allow duplicate values. "
+ "Use XYSeries(seriesName, , false) constructor."
);
}
updateXPoints(series);
this.data.add(series);
series.addChangeListener(this);
fireDatasetChanged();
}
/**
* Adds any unique x-values from 'series' to the dataset, and also adds any
* x-values that are in the dataset but not in 'series' to the series.
*
* @param series the series (null not permitted).
*/
private void updateXPoints(XYSeries series) {
if (series == null) {
throw new IllegalArgumentException("Null 'series' not permitted.");
}
HashSet seriesXPoints = new HashSet();
boolean savedState = this.propagateEvents;
this.propagateEvents = false;
for (int itemNo = 0; itemNo < series.getItemCount(); itemNo++) {
Number xValue = series.getX(itemNo);
seriesXPoints.add(xValue);
if (!this.xPoints.contains(xValue)) {
this.xPoints.add(xValue);
int seriesCount = this.data.size();
for (int seriesNo = 0; seriesNo < seriesCount; seriesNo++) {
XYSeries dataSeries = (XYSeries) this.data.get(seriesNo);
if (!dataSeries.equals(series)) {
dataSeries.add(xValue, null);
}
}
}
}
Iterator iterator = this.xPoints.iterator();
while (iterator.hasNext()) {
Number xPoint = (Number) iterator.next();
if (!seriesXPoints.contains(xPoint)) {
series.add(xPoint, null);
}
}
this.propagateEvents = savedState;
}
/**
* Updates the x-values for all the series in the dataset.
*/
public void updateXPoints() {
this.propagateEvents = false;
for (int s = 0; s < this.data.size(); s++) {
updateXPoints((XYSeries) this.data.get(s));
}
if (this.autoPrune) {
prune();
}
this.propagateEvents = true;
}
/**
* Returns the number of series in the collection.
*
* @return The series count.
*/
public int getSeriesCount() {
return this.data.size();
}
/**
* Returns the number of x values in the dataset.
*
* @return The number of x values in the dataset.
*/
public int getItemCount() {
if (this.xPoints == null) {
return 0;
}
else {
return this.xPoints.size();
}
}
/**
* Returns a series.
*
* @param series the series (zero-based index).
*
* @return The series (never null).
*/
public XYSeries getSeries(int series) {
if ((series < 0) || (series >= getSeriesCount())) {
throw new IllegalArgumentException("Index outside valid range.");
}
return (XYSeries) this.data.get(series);
}
/**
* Returns the key for a series.
*
* @param series the series (zero-based index).
*
* @return The key for a series.
*/
public Comparable getSeriesKey(int series) {
// check arguments...delegated
return getSeries(series).getKey();
}
/**
* Returns the number of items in the specified series.
*
* @param series the series (zero-based index).
*
* @return The number of items in the specified series.
*/
public int getItemCount(int series) {
// check arguments...delegated
return getSeries(series).getItemCount();
}
/**
* Returns the x-value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The x-value for the specified series and item.
*/
public Number getX(int series, int item) {
XYSeries s = (XYSeries) this.data.get(series);
return s.getX(item);
}
/**
* Returns the starting X value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The starting X value.
*/
public Number getStartX(int series, int item) {
return this.intervalDelegate.getStartX(series, item);
}
/**
* Returns the ending X value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The ending X value.
*/
public Number getEndX(int series, int item) {
return this.intervalDelegate.getEndX(series, item);
}
/**
* Returns the y-value for the specified series and item.
*
* @param series the series (zero-based index).
* @param index the index of the item of interest (zero-based).
*
* @return The y-value for the specified series and item (possibly
* null).
*/
public Number getY(int series, int index) {
XYSeries s = (XYSeries) this.data.get(series);
return s.getY(index);
}
/**
* Returns the starting Y value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The starting Y value.
*/
public Number getStartY(int series, int item) {
return getY(series, item);
}
/**
* Returns the ending Y value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The ending Y value.
*/
public Number getEndY(int series, int item) {
return getY(series, item);
}
/**
* Removes all the series from the collection and sends a
* {@link DatasetChangeEvent} to all registered listeners.
*/
public void removeAllSeries() {
// Unregister the collection as a change listener to each series in
// the collection.
for (int i = 0; i < this.data.size(); i++) {
XYSeries series = (XYSeries) this.data.get(i);
series.removeChangeListener(this);
}
// Remove all the series from the collection and notify listeners.
this.data.clear();
this.xPoints.clear();
fireDatasetChanged();
}
/**
* Removes a series from the collection and sends a
* {@link DatasetChangeEvent} to all registered listeners.
*
* @param series the series (null not permitted).
*/
public void removeSeries(XYSeries series) {
// check arguments...
if (series == null) {
throw new IllegalArgumentException("Null 'series' argument.");
}
// remove the series...
if (this.data.contains(series)) {
series.removeChangeListener(this);
this.data.remove(series);
if (this.data.size() == 0) {
this.xPoints.clear();
}
fireDatasetChanged();
}
}
/**
* Removes a series from the collection and sends a
* {@link DatasetChangeEvent} to all registered listeners.
*
* @param series the series (zero based index).
*/
public void removeSeries(int series) {
// check arguments...
if ((series < 0) || (series > getSeriesCount())) {
throw new IllegalArgumentException("Index outside valid range.");
}
// fetch the series, remove the change listener, then remove the series.
XYSeries s = (XYSeries) this.data.get(series);
s.removeChangeListener(this);
this.data.remove(series);
if (this.data.size() == 0) {
this.xPoints.clear();
}
else if (this.autoPrune) {
prune();
}
fireDatasetChanged();
}
/**
* Removes the items from all series for a given x value.
*
* @param x the x-value.
*/
public void removeAllValuesForX(Number x) {
if (x == null) {
throw new IllegalArgumentException("Null 'x' argument.");
}
boolean savedState = this.propagateEvents;
this.propagateEvents = false;
for (int s = 0; s < this.data.size(); s++) {
XYSeries series = (XYSeries) this.data.get(s);
series.remove(x);
}
this.propagateEvents = savedState;
this.xPoints.remove(x);
fireDatasetChanged();
}
/**
* Returns true if all the y-values for the specified x-value
* are null and false otherwise.
*
* @param x the x-value.
*
* @return A boolean.
*/
protected boolean canPrune(Number x) {
for (int s = 0; s < this.data.size(); s++) {
XYSeries series = (XYSeries) this.data.get(s);
if (series.getY(series.indexOf(x)) != null) {
return false;
}
}
return true;
}
/**
* Removes all x-values for which all the y-values are null.
*/
public void prune() {
HashSet hs = (HashSet) this.xPoints.clone();
Iterator iterator = hs.iterator();
while (iterator.hasNext()) {
Number x = (Number) iterator.next();
if (canPrune(x)) {
removeAllValuesForX(x);
}
}
}
/**
* This method receives notification when a series belonging to the dataset
* changes. It responds by updating the x-points for the entire dataset
* and sending a {@link DatasetChangeEvent} to all registered listeners.
*
* @param event information about the change.
*/
public void seriesChanged(SeriesChangeEvent event) {
if (this.propagateEvents) {
updateXPoints();
fireDatasetChanged();
}
}
/**
* Tests this collection for equality with an arbitrary object.
*
* @param obj the object (null permitted).
*
* @return A boolean.
*/
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof DefaultTableXYDataset)) {
return false;
}
DefaultTableXYDataset that = (DefaultTableXYDataset) obj;
if (this.autoPrune != that.autoPrune) {
return false;
}
if (this.propagateEvents != that.propagateEvents) {
return false;
}
if (!this.intervalDelegate.equals(that.intervalDelegate)) {
return false;
}
if (!ObjectUtilities.equal(this.data, that.data)) {
return false;
}
return true;
}
/**
* Returns a hash code.
*
* @return A hash code.
*/
public int hashCode() {
int result;
result = (this.data != null ? this.data.hashCode() : 0);
result = 29 * result
+ (this.xPoints != null ? this.xPoints.hashCode() : 0);
result = 29 * result + (this.propagateEvents ? 1 : 0);
result = 29 * result + (this.autoPrune ? 1 : 0);
return result;
}
/**
* Returns an independent copy of this dataset.
*
* @return A clone.
*
* @throws CloneNotSupportedException if there is some reason that cloning
* cannot be performed.
*/
public Object clone() throws CloneNotSupportedException {
DefaultTableXYDataset clone = (DefaultTableXYDataset) super.clone();
int seriesCount = this.data.size();
clone.data = new java.util.ArrayList(seriesCount);
for (int i = 0; i < seriesCount; i++) {
XYSeries series = (XYSeries) this.data.get(i);
clone.data.add(series.clone());
}
clone.intervalDelegate = new IntervalXYDelegate(clone);
// need to configure the intervalDelegate to match the original
clone.intervalDelegate.setFixedIntervalWidth(getIntervalWidth());
clone.intervalDelegate.setAutoWidth(isAutoWidth());
clone.intervalDelegate.setIntervalPositionFactor(
getIntervalPositionFactor());
clone.updateXPoints();
return clone;
}
/**
* Returns the minimum x-value in the dataset.
*
* @param includeInterval a flag that determines whether or not the
* x-interval is taken into account.
*
* @return The minimum value.
*/
public double getDomainLowerBound(boolean includeInterval) {
return this.intervalDelegate.getDomainLowerBound(includeInterval);
}
/**
* Returns the maximum x-value in the dataset.
*
* @param includeInterval a flag that determines whether or not the
* x-interval is taken into account.
*
* @return The maximum value.
*/
public double getDomainUpperBound(boolean includeInterval) {
return this.intervalDelegate.getDomainUpperBound(includeInterval);
}
/**
* Returns the range of the values in this dataset's domain.
*
* @param includeInterval a flag that determines whether or not the
* x-interval is taken into account.
*
* @return The range.
*/
public Range getDomainBounds(boolean includeInterval) {
if (includeInterval) {
return this.intervalDelegate.getDomainBounds(includeInterval);
}
else {
return DatasetUtilities.iterateDomainBounds(this, includeInterval);
}
}
/**
* Returns the interval position factor.
*
* @return The interval position factor.
*/
public double getIntervalPositionFactor() {
return this.intervalDelegate.getIntervalPositionFactor();
}
/**
* Sets the interval position factor. Must be between 0.0 and 1.0 inclusive.
* If the factor is 0.5, the gap is in the middle of the x values. If it
* is lesser than 0.5, the gap is farther to the left and if greater than
* 0.5 it gets farther to the right.
*
* @param d the new interval position factor.
*/
public void setIntervalPositionFactor(double d) {
this.intervalDelegate.setIntervalPositionFactor(d);
fireDatasetChanged();
}
/**
* returns the full interval width.
*
* @return The interval width to use.
*/
public double getIntervalWidth() {
return this.intervalDelegate.getIntervalWidth();
}
/**
* Sets the interval width to a fixed value, and sends a
* {@link DatasetChangeEvent} to all registered listeners.
*
* @param d the new interval width (must be > 0).
*/
public void setIntervalWidth(double d) {
this.intervalDelegate.setFixedIntervalWidth(d);
fireDatasetChanged();
}
/**
* Returns whether the interval width is automatically calculated or not.
*
* @return A flag that determines whether or not the interval width is
* automatically calculated.
*/
public boolean isAutoWidth() {
return this.intervalDelegate.isAutoWidth();
}
/**
* Sets the flag that indicates whether the interval width is automatically
* calculated or not.
*
* @param b a boolean.
*/
public void setAutoWidth(boolean b) {
this.intervalDelegate.setAutoWidth(b);
fireDatasetChanged();
}
}