theory.smart.foundation
Class EmptySmartKey

java.lang.Object
  |
  +--theory.smart.foundation.SmartKey
        |
        +--theory.smart.foundation.EmptySmartKey

public class EmptySmartKey

extends SmartKey

EmptySmartKey is equivalent to a "null" SmartKey. If one wants to store a SmartKey to a datastore, the SmartKey can never be null. Hence an EmptySmartKey is needed.

See Also:

SmartKey, Serialized Form

Constructor Summary

EmptySmartKey()
Default Constructor.

Method Summary

int	compareTo(java.lang.Object o) Compare always returns equal.
java.lang.String	toString() toString always returns an empty string.

Methods inherited from class theory.smart.foundation.SmartKey

equals

Methods inherited from class java.lang.Object

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

Constructor Detail

EmptySmartKey

public EmptySmartKey()

Default Constructor.

Method Detail

compareTo

public int compareTo(java.lang.Object o)

Compare always returns equal.

Overrides:

compareTo in class SmartKey

Returns:

(0)

toString

public java.lang.String toString()

toString always returns an empty string.

Overrides:

toString in class SmartKey

Returns:

""