org.xshare.base.iterator
Class SkipNullIterator

java.lang.Object
  |
  +--org.xshare.base.iterator.SkipNullIterator

All Implemented Interfaces:

java.util.Iterator

public class SkipNullIterator

extends java.lang.Object

implements java.util.Iterator

Iterator which skips all null values of a given iteration.

Notes On The Implementation

• Since this iterator is only a proxy for the real iteration, all the method calls are delegated to the underlying iteration. Hence the behavior is not well defined - it depends on the behavior of the real iterator.

Since:

0.20

Version:

$Revision: 1.1 $

Author:

Oliver Fischer

Constructor Summary

SkipNullIterator(java.util.Iterator pSourceIterator)
Creates a new instance of this iterator class for a given iteration.

Method Summary

boolean	hasNext() Checks if this iteration has still elements left.
java.lang.Object	next() Returns the next element of the iteration.
void	remove() Calls the Iterator.remove() method of the underlying iteration.

Methods inherited from class java.lang.Object

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

Constructor Detail

SkipNullIterator

public SkipNullIterator(java.util.Iterator pSourceIterator)

Creates a new instance of this iterator class for a given iteration.

Parameters:

pSourceIterator - a Iterator object pointing to the iteration of elements which should be filtered.

Method Detail

remove

public void remove()

Calls the Iterator.remove() method of the underlying iteration.

Specified by:

remove in interface java.util.Iterator

next

public java.lang.Object next()

Returns the next element of the iteration.

Specified by:

next in interface java.util.Iterator

Throws:

java.util.NoSuchElementException - if hasNext() denies the that there are objects left.

See Also:

hasNext()

hasNext

public boolean hasNext()

Checks if this iteration has still elements left.

Specified by:

hasNext in interface java.util.Iterator

Returns:

a boolean value, which is true if there are some elements left to return via next(). Otherwise false is returned.

See Also:

next()