public class ValueTailIterator extends java.lang.Object implements SequenceIterator, GroundedIterator, LookaheadIterator
ATOMIZING, GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD
Constructor and Description |
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ValueTailIterator(GroundedValue base,
int start)
Construct a ValueTailIterator
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Modifier and Type | Method and Description |
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void |
close()
Close the iterator.
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int |
getProperties()
Get properties of this iterator, as a bit-significant integer.
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GroundedValue |
getResidue()
Return a GroundedValue containing all the remaining items in the sequence returned by this
SequenceIterator, starting at the current position.
|
boolean |
hasNext()
Determine whether there are more items to come.
|
GroundedValue |
materialize()
Return a Value containing all the items in the sequence returned by this
SequenceIterator.
|
Item |
next()
Get the next item in the sequence.
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public ValueTailIterator(GroundedValue base, int start)
base
- The items to be filteredstart
- The position of the first item to be included (zero-based)public Item next() throws XPathException
SequenceIterator
next
in interface SequenceIterator
XPathException
- if an error occurs retrieving the next itempublic boolean hasNext()
LookaheadIterator
SequenceIterator.LOOKAHEAD
hasNext
in interface LookaheadIterator
public void close()
SequenceIterator
(Currently, closing an iterator is important only when the data is being "pushed" in another thread. Closing the iterator terminates that thread and means that it needs to do no additional work. Indeed, failing to close the iterator may cause the push thread to hang waiting for the buffer to be emptied.)
close
in interface SequenceIterator
public GroundedValue materialize()
materialize
in interface GroundedIterator
public GroundedValue getResidue() throws XPathException
GroundedIterator
getResidue
in interface GroundedIterator
XPathException
- in the cases of subclasses (such as the iterator over a MemoClosure)
which cause evaluation of expressions while materializing the value.public 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.Copyright (c) 2004-2018 Saxonica Limited. All rights reserved.