LastPositionFinder
, ReversibleIterator
, GroundedIterator
, LookaheadIterator
, SequenceIterator
public class RangeIterator extends java.lang.Object implements SequenceIterator, ReversibleIterator, LastPositionFinder, LookaheadIterator, GroundedIterator
Modifier and Type | Field | Description |
---|---|---|
(package private) long |
currentValue |
|
(package private) int |
increment |
|
(package private) long |
limit |
|
(package private) long |
start |
ATOMIZABLE, GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD
Constructor | Description |
---|---|
RangeIterator(long start,
long end) |
Modifier and Type | Method | Description |
---|---|---|
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.
|
SequenceIterator |
getReverseIterator() |
Get a new SequenceIterator that returns the same items in reverse order.
|
boolean |
hasNext() |
Determine whether there are more items to come.
|
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.
|
long start
long currentValue
int increment
long limit
public boolean hasNext()
LookaheadIterator
SequenceIterator.LOOKAHEAD
hasNext
in interface LookaheadIterator
public Item next()
SequenceIterator
next
in interface SequenceIterator
public Item current()
SequenceIterator
current
in interface SequenceIterator
public int position()
SequenceIterator
This method does not change the state of the iterator.
position
in interface SequenceIterator
public int getLastPosition()
LastPositionFinder
SequenceIterator.LAST_POSITION_FINDER
getLastPosition
in interface LastPositionFinder
public SequenceIterator getAnother() throws XPathException
SequenceIterator
This 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
XPathException
- if any error occurspublic int getProperties()
getProperties
in interface SequenceIterator
SequenceIterator.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.public SequenceIterator getReverseIterator()
ReversibleIterator
getReverseIterator
in interface ReversibleIterator
public Value materialize() throws XPathException
materialize
in interface GroundedIterator
XPathException