Class SortedTupleIterator

java.lang.Object
net.sf.saxon.sort.SortedIterator
net.sf.saxon.sort.SortedTupleIterator
All Implemented Interfaces:
LastPositionFinder, SequenceIterator, Sortable

class SortedTupleIterator extends SortedIterator
A SortedTupleIterator is a modified SortedIterator. Whereas the sorted iterator used by XSLT computes the sort key of each item in a sequence, using that item as the context item, the SortedTupleIterator used by XQuery precomputes the sort keys from scratch; they do not need to be a function of the item being sorted.