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java.lang.Objectnet.sf.saxon.om.SingletonIterator
SingletonIterator: an iterator over a sequence of zero or one values
| Field Summary |
| Fields inherited from interface net.sf.saxon.om.SequenceIterator |
ATOMIZABLE, GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD |
| Method Summary | |
Item |
current()
Get the current item in the sequence. |
SequenceIterator |
getAnother()
Get another iterator over the same sequence of items, positioned 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. |
SequenceIterator |
getReverseIterator()
Get a new SequenceIterator that returns the same items in reverse order. |
Item |
getValue()
|
boolean |
hasNext()
Determine whether there are more items to come. |
static AxisIterator |
makeIterator(Item item)
Factory method. |
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()
Return the current position in the sequence. |
void |
setIsAtomizing(boolean atomizing)
Indicate that any nodes returned in the sequence will be atomized. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Method Detail |
public static AxisIterator makeIterator(Item item)
item - the item to iterate over
public boolean hasNext()
hasNext in interface LookaheadIteratorpublic Item next()
AxisIterator
next in interface AxisIteratorpublic Item current()
AxisIterator
current in interface AxisIteratorpublic int position()
position in interface AxisIteratorpublic int getLastPosition()
LastPositionFinderSequenceIterator.LAST_POSITION_FINDER
getLastPosition in interface LastPositionFinderpublic SequenceIterator getAnother()
AxisIterator
getAnother in interface AxisIteratorpublic SequenceIterator getReverseIterator()
ReversibleIterator
getReverseIterator in interface ReversibleIteratorpublic Item getValue()
public Value materialize()
materialize in interface GroundedIteratorpublic void setIsAtomizing(boolean atomizing)
This implementation attempts atomization of a singleton node if it is untyped. This avoids adding an iterator to iterate over the value in the common case where the typed value of the node is a single atomic value.
setIsAtomizing in interface AtomizableIteratoratomizing - true if the caller of this iterator will atomize any
nodes that are returned, and is therefore willing to accept the typed
value of the nodes instead of the nodes themselves.public int getProperties()
getProperties in interface SequenceIteratorSequenceIterator.GROUNDED, SequenceIterator.LAST_POSITION_FINDER,
and SequenceIterator.LOOKAHEAD. It is always
acceptable to return the value zero, indicating that there are no known special properties.
It is acceptable for the properties of the iterator to change depending on its state.
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