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java.lang.Objectnet.sf.saxon.sort.DocumentOrderIterator
DocumentOrderIterator takes as input an iteration of nodes in any order, and returns as output an iteration of the same nodes in document order, eliminating any duplicates.
Constructor Summary | |
DocumentOrderIterator(SequenceIterator base,
NodeOrderComparer comparer)
Iterate over a sequence in document order. |
Method Summary | |
int |
compare(int a,
int b)
Compare two nodes in document sequence (needed to implement the Sortable interface) |
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. |
void |
swap(int a,
int b)
Swap two nodes (needed to implement the Sortable interface) |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public DocumentOrderIterator(SequenceIterator base, NodeOrderComparer comparer) throws XPathException
Method Detail |
public int compare(int a, int b)
compare
in interface Sortable
public void swap(int a, int b)
swap
in interface Sortable
public Item next() throws XPathException
SequenceIterator
next
in interface SequenceIterator
XPathException
- if an error occurs retrieving the next itempublic Item current()
SequenceIterator
current
in interface SequenceIterator
public int position()
SequenceIterator
position
in interface SequenceIterator
public SequenceIterator getAnother() throws XPathException
SequenceIterator
getAnother
in interface SequenceIterator
XPathException
- if any error occurs
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