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java.lang.Objectnet.sf.saxon.value.MemoClosure.ProgressiveIterator
A ProgressiveIterator starts by reading any items already held in the reservoir; when the reservoir is exhausted, it reads further items from the inputIterator, copying them into the reservoir as they are read.
| Field Summary |
| Fields inherited from interface net.sf.saxon.om.SequenceIterator |
ATOMIZABLE, GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD |
| Constructor Summary | |
MemoClosure.ProgressiveIterator()
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| 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. |
int |
getLastPosition()
Get the last position (that is, the number of items in the sequence) |
int |
getProperties()
Get properties of this iterator, as a bit-significant integer. |
Value |
materialize()
Return a value containing all the items in the sequence returned by this SequenceIterator |
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 MemoClosure.ProgressiveIterator()
| Method Detail |
public Item next()
throws XPathException
SequenceIterator
next in interface SequenceIteratorXPathException - if an error occurs retrieving the next itempublic Item current()
SequenceIterator
current in interface SequenceIteratorpublic int position()
SequenceIteratorThis method does not change the state of the iterator.
position in interface SequenceIteratorpublic SequenceIterator getAnother()
SequenceIteratorThis method allows access to all the items in the sequence without disturbing the current position of the iterator. Internally, its main use is in evaluating the last() function.
This method does not change the state of the iterator.
getAnother in interface SequenceIterator
public int getLastPosition()
throws XPathException
getLastPosition in interface LastPositionFinderXPathException
public Value materialize()
throws XPathException
materialize in interface GroundedIteratorXPathExceptionpublic int getProperties()
getProperties in interface SequenceIteratorSequenceIterator.GROUNDED and SequenceIterator.LAST_POSITION_FINDER. It is always
acceptable to return the value zero, indicating that there are no known special properties.
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