org.melati.poem.util
Class MappedEnumeration<T,I>

java.lang.Object
  org.melati.poem.util.MappedEnumeration<T,I>

All Implemented Interfaces:

Enumeration<T>

public abstract class MappedEnumeration<T,I>
extends Object
implements Enumeration<T>

An Enumeration that encapsulates another and translates each element according to an abstract mapping function.

Implementations must provide mapped(Object).

Constructor Summary

MappedEnumeration(Enumeration<I> enumeration)
Wrapper Constructor given Enumeration to wrap.

Method Summary

boolean	hasMoreElements()
protected abstract T	mapped(I element)
T	nextElement()

Methods inherited from class java.lang.Object

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

Constructor Detail

MappedEnumeration

public MappedEnumeration(Enumeration<I> enumeration)

Wrapper Constructor given Enumeration to wrap.

Parameters:

enumeration - Enumeration to wrap

Method Detail

hasMoreElements

public boolean hasMoreElements()

Specified by:

hasMoreElements in interface Enumeration<T>

See Also:

Enumeration.hasMoreElements()

mapped

protected abstract T mapped(I element)

Parameters:

element - the element of the Enumeration to act on

Returns:

the element after transformation

nextElement

public T nextElement()

Specified by:

nextElement in interface Enumeration<T>

See Also:

Enumeration.nextElement()