public interface ITupleIterator<E> extends java.util.Iterator<ITuple<E>>
ITuples populated with the data and metadata for visited index entries.
ITuplefrom which you can extract the data and metadata for next entry.
ITupleIterators will generally return the same
ITuple reference on on each invocation of this method. The caller
is responsible for copying out any data or metadata of interest before
next() again. See
TupleFilter which is aware of
this and can be used to stack filters safely.
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