org.melati.poem.util
Class FilteredEnumeration<T>

java.lang.Object
  org.melati.poem.util.FilteredEnumeration<T>

All Implemented Interfaces:

Enumeration<T>, SkipEnumeration<T>

public abstract class FilteredEnumeration<T>
extends Object
implements SkipEnumeration<T>

An Enumeration created by filtering another according to an abstract inclusion function.

Implementations must provide isIncluded(Object).

Constructor Summary

FilteredEnumeration(Enumeration<T> base)
Constructor.

Method Summary

boolean	hasMoreElements()
protected abstract boolean	isIncluded(Object o)
T	nextElement()
void	skip() Skip an Element.

Methods inherited from class java.lang.Object

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

Constructor Detail

FilteredEnumeration

public FilteredEnumeration(Enumeration<T> base)

Constructor.

Parameters:

base - the Enumeration we are based upon

Method Detail

isIncluded

protected abstract boolean isIncluded(Object o)

hasMoreElements

public boolean hasMoreElements()

Specified by:

hasMoreElements in interface Enumeration<T>

See Also:

Enumeration.hasMoreElements()

nextElement

public T nextElement()

Specified by:

nextElement in interface Enumeration<T>

See Also:

Enumeration.nextElement()

skip

public void skip()

Skip an Element.

Specified by:

skip in interface SkipEnumeration<T>

See Also:

SkipEnumeration.skip()