org.tigris.scarab.util
Class SubsetIterator

java.lang.Object
  org.tigris.scarab.util.SubsetIterator

All Implemented Interfaces:

java.util.Iterator

Direct Known Subclasses:

EmptySubsetIterator, SubsetIteratorWithSize

public class SubsetIterator

extends java.lang.Object

implements java.util.Iterator

Field Summary

static SubsetIterator	EMPTY
(package private) boolean	firstCall

Constructor Summary

SubsetIterator(java.util.Iterator i, int offset)
Constructs an itarator on a subset of the given iterator.

SubsetIterator(java.util.Iterator i, int offset, int elements)
Constructs an itarator on a subset of the given iterator.

Method Summary

boolean	hasNext()
java.lang.Object	next()
void	remove()

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY

public static final SubsetIterator EMPTY

firstCall

boolean firstCall

Constructor Detail

SubsetIterator

public SubsetIterator(java.util.Iterator i,
                      int offset,
                      int elements)

Constructs an itarator on a subset of the given iterator. The SubsetIterator starts with the offset-element and iterates over elements elements

Parameters:

i - the Iterator to subset

offset - the position of the first element of the subset

SubsetIterator

public SubsetIterator(java.util.Iterator i,
                      int offset)

Constructs an itarator on a subset of the given iterator. The SubsetIterator starts with the offset-element and iterates over all elements

Parameters:

i - the Iterator to subset

offset - the position of the first element of the subset

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator

next

public java.lang.Object next()

Specified by:

next in interface java.util.Iterator

remove

public void remove()

Specified by:

remove in interface java.util.Iterator