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java.lang.Objectnet.sf.saxon.functions.DistinctValues.DistinctIterator
Iterator class to return the distinct values in a sequence
Constructor Summary | |
DistinctValues.DistinctIterator(SequenceIterator base,
AtomicSortComparer comparer)
Create an iterator over the distinct values in a sequence |
Method Summary | |
Item |
current()
Get the current value in the sequence (the one returned by the most recent call on next()). |
SequenceIterator |
getAnother()
Get another SequenceIterator that iterates over the same items as the original, but which is repositioned at the start of the sequence. |
Item |
next()
Get the next item in the sequence. |
int |
position()
Get the current position. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public DistinctValues.DistinctIterator(SequenceIterator base, AtomicSortComparer comparer)
base
- the input sequence. This must return atomic values only.comparer
- The comparer used to obtain comparison keys from each value;
these comparison keys are themselves compared using equals().Method Detail |
public Item next() throws XPathException
next
in interface SequenceIterator
XPathException
- if an error occurs retrieving the next itempublic Item current()
current
in interface SequenceIterator
public int position()
position
in interface SequenceIterator
public SequenceIterator getAnother() throws XPathException
getAnother
in interface SequenceIterator
XPathException
- if any error occurs
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