Package net.sf.saxon.expr
Interface LastPositionFinder
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- All Superinterfaces:
SequenceIterator
- All Known Implementing Classes:
ArrayIterator
,EmptyIterator
,GroupByIterator
,ListIterator
,MemoClosure.ProgressiveIterator
,RangeIterator
,ReverseArrayIterator
,SingletonIterator
,SortedGroupIterator
,SortedIterator
,SortedTupleIterator
,TailExpression.TailIterator
public interface LastPositionFinder extends SequenceIterator
A LastPositionFinder is an interface implemented by any SequenceIterator that is able to return the position of the last item in the sequence.
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Field Summary
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Fields inherited from interface net.sf.saxon.om.SequenceIterator
ATOMIZABLE, GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description int
getLastPosition()
Get the last position (that is, the number of items in the sequence).-
Methods inherited from interface net.sf.saxon.om.SequenceIterator
current, getAnother, getProperties, next, position
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Method Detail
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getLastPosition
int getLastPosition() throws XPathException
Get the last position (that is, the number of items in the sequence). This method is non-destructive: it does not change the state of the iterator. The result is undefined if the next() method of the iterator has already returned null. This method must not be called unless the result of getProperties() on the iterator includes the bit settingSequenceIterator.LAST_POSITION_FINDER
- Throws:
XPathException
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