org.rhq.enterprise.gui.image.chart
Class DataPoint

java.lang.Object
  org.rhq.enterprise.gui.image.chart.DataPoint

All Implemented Interfaces:

IDataPoint, IDisplayDataPoint

Direct Known Subclasses:

HighLowDataPoint, StackedDataPoint

public class DataPoint
extends Object
implements IDisplayDataPoint

DataPoint holds a data and label for a single data point in a chart. A collection of DataPoint objects are used to chart a series of data points.

Constructor Summary

DataPoint(double value)
Constructs a DataPoint object with the specified value and an empty label.

DataPoint(double value, long timestamp)
Constructs a DataPoint object with the specified value and and specified label.

DataPoint(double value, String label)
Constructs a DataPoint object with the specified value and and specified label.

Method Summary

boolean	equals(Object obj)
String	getLabel() Retrieves the label of a chart data point.
long	getTimestamp() Retrieves the absolute time.
double	getValue() Retrieves the value of a chart data point.
int	hashCode()
void	setLabel(String label) Sets the label of a chart data point.
void	setValue(double value) Sets the value of a chart data point.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataPoint

public DataPoint(double value)

Constructs a DataPoint object with the specified value and an empty label.

Parameters:

value - A floating point value for the object data point.

DataPoint

public DataPoint(double value,
                 long timestamp)

Constructs a DataPoint object with the specified value and and specified label.

Parameters:

value - A floating point value for the object's data point.

timestamp - A timestamp for the object's data point.

DataPoint

public DataPoint(double value,
                 String label)

Constructs a DataPoint object with the specified value and and specified label.

Parameters:

value - A floating point value for the object's data point.

label - A String label for the object's data point.

Method Detail

getTimestamp

public long getTimestamp()

Retrieves the absolute time.

Specified by:

getTimestamp in interface IDisplayDataPoint

Returns:

A long value for the absolute time.

getLabel

public String getLabel()

Retrieves the label of a chart data point.

Specified by:

getLabel in interface IDisplayDataPoint

Returns:

A String label for a chart data point.

setLabel

public void setLabel(String label)

Sets the label of a chart data point. The label is displayed on the X axis for line and column charts.

Parameters:

label - A String label for a chart data point.

getValue

public double getValue()

Retrieves the value of a chart data point. The data point is charted on the Y axis for line and column charts.

Specified by:

getValue in interface IDataPoint

Returns:

A floating point value for a chart data point.

setValue

public void setValue(double value)

Sets the value of a chart data point. The data point is charted on the Y axis for line and column charts.

Parameters:

value - A floating point value for a chart data point.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object