net.sf.saxon.tree.iter
Interface UnfailingIterator

All Superinterfaces:

SequenceIterator

All Known Subinterfaces:

AxisIterator

All Known Implementing Classes:

ArrayIterator, AxisIteratorImpl, EmptyIterator, ListIterator, ManualIterator, NamespaceIterator, Navigator.AncestorEnumeration, Navigator.AxisFilter, Navigator.BaseEnumeration, Navigator.DescendantEnumeration, Navigator.EmptyTextFilter, Navigator.FollowingEnumeration, Navigator.PrecedingEnumeration, NodeArrayIterator, NodeListIterator, PrependIterator, ReverseArrayIterator, ReverseNodeArrayIterator, SingleNodeIterator, SingletonIterator, StringTokenIterator, StringValue.CharacterIterator, VirtualCopy.VirtualCopier, VirtualUntypedCopy.VirtualUntypedCopier

public interface UnfailingIterator
extends SequenceIterator

A SequenceIterator is used to iterate over a sequence. An UnfailingIterator is a SequenceIterator that throws no checked exceptions.

Field Summary

Fields inherited from interface net.sf.saxon.om.SequenceIterator

GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD

Method Summary

Item	current() Get the current item in the sequence.
SequenceIterator	getAnother() Get another iterator over the same sequence of items, positioned at the start of the sequence.
Item	next() Get the next item in the sequence.
int	position() Get the current position

Methods inherited from interface net.sf.saxon.om.SequenceIterator

close, getProperties

Method Detail

next

Item next()

Get the next item in the sequence.

Specified by:

next in interface SequenceIterator

Returns:

the next Item. If there are no more nodes, return null.

current

Item current()

Get the current item in the sequence.

Specified by:

current in interface SequenceIterator

Returns:

the current item, that is, the item most recently returned by next()

position

int position()

Get the current position

Specified by:

position in interface SequenceIterator

Returns:

the position of the current item (the item most recently returned by next()), starting at 1 for the first node

getAnother

SequenceIterator getAnother()

Get another iterator over the same sequence of items, positioned at the start of the sequence. It must be possible to call this method at any time, whether none, some, or all of the items in the original iterator have been read. The method is non-destructive: it does not change the state of the original iterator.

Specified by:

getAnother in interface SequenceIterator

Returns:

a new iterator over the same sequence