org.jfree.data.xy

Class DefaultHighLowDataset

java.lang.Object

org.jfree.data.general.AbstractDataset

org.jfree.data.general.AbstractSeriesDataset

org.jfree.data.xy.AbstractXYDataset

org.jfree.data.xy.DefaultHighLowDataset

All Implemented Interfaces:

java.io.ObjectInputValidation, java.io.Serializable, java.lang.Cloneable, java.util.EventListener, Dataset, SeriesChangeListener, SeriesDataset, OHLCDataset, XYDataset, org.jfree.util.PublicCloneable

public class DefaultHighLowDataset
extends AbstractXYDataset
implements OHLCDataset, org.jfree.util.PublicCloneable

A simple implementation of the OHLCDataset interface. See also the DefaultOHLCDataset class, which provides another implementation that is very similar.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
DefaultHighLowDataset(java.lang.Comparable seriesKey, java.util.Date[] date, double[] high, double[] low, double[] open, double[] close, double[] volume) Constructs a new high/low/open/close dataset.

Method Summary

Modifier and Type	Method and Description
static java.lang.Number[]	createNumberArray(double[] data) Constructs an array of Number objects from an array of doubles.
boolean	equals(java.lang.Object obj) Tests this dataset for equality with an arbitrary instance.
java.lang.Number	getClose(int series, int item) Returns the close-value for one item in a series.
double	getCloseValue(int series, int item) Returns the close-value (as a double primitive) for an item within a series.
java.lang.Number	getHigh(int series, int item) Returns the high-value for one item in a series.
double	getHighValue(int series, int item) Returns the high-value (as a double primitive) for an item within a series.
int	getItemCount(int series) Returns the number of items in the specified series.
java.lang.Number	getLow(int series, int item) Returns the low-value for one item in a series.
double	getLowValue(int series, int item) Returns the low-value (as a double primitive) for an item within a series.
java.lang.Number	getOpen(int series, int item) Returns the open-value for one item in a series.
double	getOpenValue(int series, int item) Returns the open-value (as a double primitive) for an item within a series.
int	getSeriesCount() Returns the number of series in the dataset.
java.lang.Comparable	getSeriesKey(int series) Returns the key for the series stored in this dataset.
java.lang.Number	getVolume(int series, int item) Returns the volume-value for one item in a series.
double	getVolumeValue(int series, int item) Returns the volume-value (as a double primitive) for an item within a series.
java.lang.Number	getX(int series, int item) Returns the x-value for one item in a series.
java.util.Date	getXDate(int series, int item) Returns the x-value for one item in a series, as a Date.
java.lang.Number	getY(int series, int item) Returns the y-value for one item in a series.

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

getDomainOrder, getXValue, getYValue

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

indexOf, seriesChanged

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

addChangeListener, clone, fireDatasetChanged, getGroup, getNotify, hasListener, notifyListeners, removeChangeListener, setGroup, setNotify, validateObject

Methods inherited from class java.lang.Object

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

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

getDomainOrder, getXValue, getYValue

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

indexOf

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

addChangeListener, getGroup, removeChangeListener, setGroup

Methods inherited from interface org.jfree.util.PublicCloneable

clone

Constructor Detail

DefaultHighLowDataset

public DefaultHighLowDataset(java.lang.Comparable seriesKey,
                             java.util.Date[] date,
                             double[] high,
                             double[] low,
                             double[] open,
                             double[] close,
                             double[] volume)

Constructs a new high/low/open/close dataset.

The current implementation allows only one series in the dataset. This may be extended in a future version.

Parameters:

seriesKey - the key for the series (null not permitted).

date - the dates (null not permitted).

high - the high values (null not permitted).

low - the low values (null not permitted).

open - the open values (null not permitted).

close - the close values (null not permitted).

volume - the volume values (null not permitted).

Method Detail

getSeriesKey

public java.lang.Comparable getSeriesKey(int series)

Returns the key for the series stored in this dataset.

Specified by:

getSeriesKey in interface SeriesDataset

Specified by:

getSeriesKey in class AbstractSeriesDataset

Parameters:

series - the index of the series (ignored, this dataset supports only one series and this method always returns the key for series 0).

Returns:

The series key (never null).

getX

public java.lang.Number getX(int series,
                             int item)

Returns the x-value for one item in a series. The value returned is a Long instance generated from the underlying Date object. To avoid generating a new object instance, you might prefer to call AbstractXYDataset.getXValue(int, int).

Specified by:

getX in interface XYDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The x-value.

See Also:

AbstractXYDataset.getXValue(int, int), getXDate(int, int)

getXDate

public java.util.Date getXDate(int series,
                               int item)

Returns the x-value for one item in a series, as a Date.

This method is provided for convenience only.

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The x-value as a Date.

See Also:

getX(int, int)

getY

public java.lang.Number getY(int series,
                             int item)

Returns the y-value for one item in a series.

This method (from the XYDataset interface) is mapped to the getCloseValue(int, int) method.

Specified by:

getY in interface XYDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The y-value.

See Also:

AbstractXYDataset.getYValue(int, int)

getHigh

public java.lang.Number getHigh(int series,
                                int item)

Returns the high-value for one item in a series.

Specified by:

getHigh in interface OHLCDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The high-value.

See Also:

getHighValue(int, int)

getHighValue

public double getHighValue(int series,
                           int item)

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

Specified by:

getHighValue in interface OHLCDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The high-value.

See Also:

getHigh(int, int)

getLow

public java.lang.Number getLow(int series,
                               int item)

Returns the low-value for one item in a series.

Specified by:

getLow in interface OHLCDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The low-value.

See Also:

getLowValue(int, int)

getLowValue

public double getLowValue(int series,
                          int item)

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

Specified by:

getLowValue in interface OHLCDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The low-value.

See Also:

getLow(int, int)

getOpen

public java.lang.Number getOpen(int series,
                                int item)

Returns the open-value for one item in a series.

Specified by:

getOpen in interface OHLCDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The open-value.

See Also:

getOpenValue(int, int)

getOpenValue

public double getOpenValue(int series,
                           int item)

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

Specified by:

getOpenValue in interface OHLCDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The open-value.

See Also:

getOpen(int, int)

getClose

public java.lang.Number getClose(int series,
                                 int item)

Returns the close-value for one item in a series.

Specified by:

getClose in interface OHLCDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The close-value.

See Also:

getCloseValue(int, int)

getCloseValue

public double getCloseValue(int series,
                            int item)

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

Specified by:

getCloseValue in interface OHLCDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The close-value.

See Also:

getClose(int, int)

getVolume

public java.lang.Number getVolume(int series,
                                  int item)

Returns the volume-value for one item in a series.

Specified by:

getVolume in interface OHLCDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The volume-value.

See Also:

getVolumeValue(int, int)

getVolumeValue

public double getVolumeValue(int series,
                             int item)

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

Specified by:

getVolumeValue in interface OHLCDataset

Parameters:

series - the series (zero-based index).

item - the item (zero-based index).

Returns:

The volume-value.

See Also:

getVolume(int, int)

getSeriesCount

public int getSeriesCount()

Returns the number of series in the dataset.

This implementation only allows one series.

Specified by:

getSeriesCount in interface SeriesDataset

Specified by:

getSeriesCount in class AbstractSeriesDataset

Returns:

The number of series.

getItemCount

public int getItemCount(int series)

Returns the number of items in the specified series.

Specified by:

getItemCount in interface XYDataset

Parameters:

series - the index (zero-based) of the series.

Returns:

The number of items in the specified series.

equals

public boolean equals(java.lang.Object obj)

Tests this dataset for equality with an arbitrary instance.

Overrides:

equals in class java.lang.Object

Parameters:

obj - the object (null permitted).

Returns:

A boolean.

createNumberArray

public static java.lang.Number[] createNumberArray(double[] data)

Constructs an array of Number objects from an array of doubles.

Parameters:

data - the double values to convert (null not permitted).

Returns:

The data as an array of Number objects.