Package org.jfree.data

Class ComparableObjectItem

java.lang.Object

org.jfree.data.ComparableObjectItem

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Comparable

Direct Known Subclasses:

OHLCItem, VectorDataItem, XIntervalDataItem, XYIntervalDataItem, YIntervalDataItem

public class ComparableObjectItem
extends java.lang.Object
implements java.lang.Cloneable, java.lang.Comparable, java.io.Serializable

Represents one (Comparable, Object) data item for use in a ComparableObjectSeries.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private java.lang.Object	obj	The y-value.
private static long	serialVersionUID	For serialization.
private java.lang.Comparable	x	The x-value.

Constructor Summary

Constructors

Constructor	Description
ComparableObjectItem(java.lang.Comparable x, java.lang.Object y)	Constructs a new data item.

Method Summary

Modifier and Type	Method	Description
java.lang.Object	clone()	Returns a clone of this object.
int	compareTo(java.lang.Object o1)	Returns an integer indicating the order of this object relative to another object.
boolean	equals(java.lang.Object obj)	Tests if this object is equal to another.
protected java.lang.Comparable	getComparable()	Returns the x-value.
protected java.lang.Object	getObject()	Returns the y-value.
int	hashCode()	Returns a hash code.
protected void	setObject(java.lang.Object y)	Sets the y-value for this data item.

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

For serialization.

See Also:

Constant Field Values

x

private java.lang.Comparable x

The x-value.

obj

private java.lang.Object obj

The y-value.

Constructor Detail

ComparableObjectItem

public ComparableObjectItem(java.lang.Comparable x,
                            java.lang.Object y)

Constructs a new data item.

Parameters:

x - the x-value (null NOT permitted).

y - the y-value (null permitted).

Method Detail

getComparable

protected java.lang.Comparable getComparable()

Returns the x-value.

Returns:

The x-value (never null).

getObject

protected java.lang.Object getObject()

Returns the y-value.

Returns:

The y-value (possibly null).

setObject

protected void setObject(java.lang.Object y)

Sets the y-value for this data item. Note that there is no corresponding method to change the x-value.

Parameters:

y - the new y-value (null permitted).

compareTo

public int compareTo(java.lang.Object o1)

Returns an integer indicating the order of this object relative to another object.

For the order we consider only the x-value: negative == "less-than", zero == "equal", positive == "greater-than".

Specified by:

compareTo in interface java.lang.Comparable

Parameters:

o1 - the object being compared to.

Returns:

An integer indicating the order of this data pair object relative to another object.

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Returns a clone of this object.

Overrides:

clone in class java.lang.Object

Returns:

A clone.

Throws:

java.lang.CloneNotSupportedException - not thrown by this class, but subclasses may differ.

equals

public boolean equals(java.lang.Object obj)

Tests if this object is equal to another.

Overrides:

equals in class java.lang.Object

Parameters:

obj - the object to test against for equality (null permitted).

Returns:

A boolean.

hashCode

public int hashCode()

Returns a hash code.

Overrides:

hashCode in class java.lang.Object

Returns:

A hash code.