org.jfree.data.gantt

Class XYTaskDataset

java.lang.Object

org.jfree.data.general.AbstractDataset

org.jfree.data.general.AbstractSeriesDataset

org.jfree.data.xy.AbstractXYDataset

org.jfree.data.gantt.XYTaskDataset

All Implemented Interfaces:

ObjectInputValidation, Serializable, Cloneable, EventListener, Dataset, DatasetChangeListener, SeriesChangeListener, SeriesDataset, IntervalXYDataset, XYDataset

public class XYTaskDataset
extends AbstractXYDataset
implements IntervalXYDataset, DatasetChangeListener

A dataset implementation that wraps a TaskSeriesCollection and presents it as an IntervalXYDataset, allowing a set of tasks to be displayed using an XYBarRenderer (and usually a SymbolAxis). This is a very specialised dataset implementation ---before using it, you should take some time to understand the use-cases that it is designed for.

Since:

1.0.11

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
XYTaskDataset(TaskSeriesCollection tasks) Creates a new dataset based on the supplied collection of tasks.

Method Summary

Modifier and Type	Method and Description
Object	clone() Returns a clone of this dataset.
void	datasetChanged(DatasetChangeEvent event) Receives a change event from the underlying dataset and responds by firing a change event for this dataset.
boolean	equals(Object obj) Tests this dataset for equality with an arbitrary object.
Number	getEndX(int series, int item) Returns the ending date/time for the specified item (task) in the given series, measured in milliseconds since 1-Jan-1970 (as in java.util.Date).
double	getEndXValue(int series, int item) Returns the ending date/time for the specified item (task) in the given series, measured in milliseconds since 1-Jan-1970 (as in java.util.Date).
Number	getEndY(int series, int item) Returns the ending value of the y-interval for an item in the given series.
double	getEndYValue(int series, int item) Returns the ending value of the y-interval for an item in the given series.
int	getItemCount(int series) Returns the number of items (tasks) in the specified series.
int	getSeriesCount() Returns the number of series in the dataset.
Comparable	getSeriesKey(int series) Returns the name of a series.
double	getSeriesWidth() Returns the width of the interval for each series this dataset.
Number	getStartX(int series, int item) Returns the starting date/time for the specified item (task) in the given series, measured in milliseconds since 1-Jan-1970 (as in java.util.Date).
double	getStartXValue(int series, int item) Returns the starting date/time for the specified item (task) in the given series, measured in milliseconds since 1-Jan-1970 (as in java.util.Date).
Number	getStartY(int series, int item) Returns the starting value of the y-interval for an item in the given series.
double	getStartYValue(int series, int item) Returns the starting value of the y-interval for an item in the given series.
TaskSeriesCollection	getTasks() Returns the underlying task series collection that was supplied to the constructor.
Number	getX(int series, int item) Returns the x-value for the specified series.
double	getXValue(int series, int item) Returns the x-value (as a double primitive) for an item within a series.
Number	getY(int series, int item) Returns the y-value for the specified series/item.
double	getYValue(int series, int item) Returns the y-value (as a double primitive) for an item within a series.
boolean	isTransposed() Returns a flag that indicates whether or not the dataset is transposed.
void	setSeriesWidth(double w) Sets the series interval width and sends a DatasetChangeEvent to all registered listeners.
void	setTransposed(boolean transposed) Sets the flag that controls whether or not the dataset is transposed and sends a DatasetChangeEvent to all registered listeners.

Methods inherited from class org.jfree.data.xy.AbstractXYDataset

getDomainOrder

Methods inherited from class org.jfree.data.general.AbstractSeriesDataset

indexOf, seriesChanged

Methods inherited from class org.jfree.data.general.AbstractDataset

addChangeListener, getGroup, getNotify, hasListener, removeChangeListener, setGroup, setNotify, validateObject

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jfree.data.xy.XYDataset

getDomainOrder

Methods inherited from interface org.jfree.data.general.SeriesDataset

indexOf

Methods inherited from interface org.jfree.data.general.Dataset

addChangeListener, getGroup, removeChangeListener, setGroup

Constructor Detail

XYTaskDataset

public XYTaskDataset(TaskSeriesCollection tasks)

Creates a new dataset based on the supplied collection of tasks.

Parameters:

tasks - the underlying dataset (null not permitted).

Method Detail

getTasks

public TaskSeriesCollection getTasks()

Returns the underlying task series collection that was supplied to the constructor.

Returns:

The underlying collection (never null).

getSeriesWidth

public double getSeriesWidth()

Returns the width of the interval for each series this dataset.

Returns:

The width of the series interval.

See Also:

setSeriesWidth(double)

setSeriesWidth

public void setSeriesWidth(double w)

Sets the series interval width and sends a DatasetChangeEvent to all registered listeners.

Parameters:

w - the width.

See Also:

getSeriesWidth()

isTransposed

public boolean isTransposed()

Returns a flag that indicates whether or not the dataset is transposed. The default is false which means the x-values are integers corresponding to the series indices, and the y-values are millisecond values corresponding to the task date/time intervals. If the flag is set to true, the x and y-values are reversed.

Returns:

The flag.

See Also:

setTransposed(boolean)

setTransposed

public void setTransposed(boolean transposed)

Sets the flag that controls whether or not the dataset is transposed and sends a DatasetChangeEvent to all registered listeners.

Parameters:

transposed - the new flag value.

See Also:

isTransposed()

getSeriesCount

public int getSeriesCount()

Returns the number of series in the dataset.

Specified by:

getSeriesCount in interface SeriesDataset

Specified by:

getSeriesCount in class AbstractSeriesDataset

Returns:

The series count.

getSeriesKey

public Comparable getSeriesKey(int series)

Returns the name of a series.

Specified by:

getSeriesKey in interface SeriesDataset

Specified by:

getSeriesKey in class AbstractSeriesDataset

Parameters:

series - the series index (zero-based).

Returns:

The name of a series.

getItemCount

public int getItemCount(int series)

Returns the number of items (tasks) in the specified series.

Specified by:

getItemCount in interface XYDataset

Parameters:

series - the series index (zero-based).

Returns:

The item count.

getXValue

public double getXValue(int series,
                        int item)

Returns the x-value (as a double primitive) for an item within a series.

Specified by:

getXValue in interface XYDataset

Overrides:

getXValue in class AbstractXYDataset

Parameters:

series - the series index (zero-based).

item - the item index (zero-based).

Returns:

The value.

getStartXValue

public double getStartXValue(int series,
                             int item)

Returns the starting date/time for the specified item (task) in the given series, measured in milliseconds since 1-Jan-1970 (as in java.util.Date).

Specified by:

getStartXValue in interface IntervalXYDataset

Parameters:

series - the series index.

item - the item (or task) index.

Returns:

The start date/time.

See Also:

IntervalXYDataset.getStartX(int, int)

getEndXValue

public double getEndXValue(int series,
                           int item)

Returns the ending date/time for the specified item (task) in the given series, measured in milliseconds since 1-Jan-1970 (as in java.util.Date).

Specified by:

getEndXValue in interface IntervalXYDataset

Parameters:

series - the series index.

item - the item (or task) index.

Returns:

The end date/time.

See Also:

IntervalXYDataset.getEndX(int, int)

getX

public Number getX(int series,
                   int item)

Returns the x-value for the specified series.

Specified by:

getX in interface XYDataset

Parameters:

series - the series index.

item - the item index.

Returns:

The x-value (in milliseconds).

getStartX

public Number getStartX(int series,
                        int item)

Returns the starting date/time for the specified item (task) in the given series, measured in milliseconds since 1-Jan-1970 (as in java.util.Date).

Specified by:

getStartX in interface IntervalXYDataset

Parameters:

series - the series index.

item - the item (or task) index.

Returns:

The start date/time.

getEndX

public Number getEndX(int series,
                      int item)

Returns the ending date/time for the specified item (task) in the given series, measured in milliseconds since 1-Jan-1970 (as in java.util.Date).

Specified by:

getEndX in interface IntervalXYDataset

Parameters:

series - the series index.

item - the item (or task) index.

Returns:

The end date/time.

getYValue

public double getYValue(int series,
                        int item)

Returns the y-value (as a double primitive) for an item within a series.

Specified by:

getYValue in interface XYDataset

Overrides:

getYValue in class AbstractXYDataset

Parameters:

series - the series index (zero-based).

item - the item index (zero-based).

Returns:

The value.

getStartYValue

public double getStartYValue(int series,
                             int item)

Returns the starting value of the y-interval for an item in the given series.

Specified by:

getStartYValue in interface IntervalXYDataset

Parameters:

series - the series index.

item - the item (or task) index.

Returns:

The y-interval start.

See Also:

IntervalXYDataset.getStartY(int, int)

getEndYValue

public double getEndYValue(int series,
                           int item)

Returns the ending value of the y-interval for an item in the given series.

Specified by:

getEndYValue in interface IntervalXYDataset

Parameters:

series - the series index.

item - the item (or task) index.

Returns:

The y-interval end.

See Also:

IntervalXYDataset.getEndY(int, int)

getY

public Number getY(int series,
                   int item)

Returns the y-value for the specified series/item. In this implementation, we return the series index as the y-value (this means that every item in the series has a constant integer value).

Specified by:

getY in interface XYDataset

Parameters:

series - the series index.

item - the item index.

Returns:

The y-value.

getStartY

public Number getStartY(int series,
                        int item)

Returns the starting value of the y-interval for an item in the given series.

Specified by:

getStartY in interface IntervalXYDataset

Parameters:

series - the series index.

item - the item (or task) index.

Returns:

The y-interval start.

getEndY

public Number getEndY(int series,
                      int item)

Returns the ending value of the y-interval for an item in the given series.

Specified by:

getEndY in interface IntervalXYDataset

Parameters:

series - the series index.

item - the item (or task) index.

Returns:

The y-interval end.

datasetChanged

public void datasetChanged(DatasetChangeEvent event)

Receives a change event from the underlying dataset and responds by firing a change event for this dataset.

Specified by:

datasetChanged in interface DatasetChangeListener

Parameters:

event - the event.

equals

public boolean equals(Object obj)

Tests this dataset for equality with an arbitrary object.

Overrides:

equals in class Object

Parameters:

obj - the object (null permitted).

Returns:

A boolean.

clone

public Object clone()
             throws CloneNotSupportedException

Returns a clone of this dataset.

Overrides:

clone in class AbstractDataset

Returns:

A clone of this dataset.

Throws:

CloneNotSupportedException - if there is a problem cloning.