protected class VirtualCopy.VirtualCopier extends java.lang.Object implements AxisIterator
?????? | ????? |
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protected AxisIterator |
base |
protected NodeInfo |
subtreeRoot |
GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD
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VirtualCopier(AxisIterator base,
VirtualCopy parent,
NodeInfo subtreeRoot) |
?????? | ????? |
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Value |
atomize()
Return the atomized value of the current node.
|
void |
close()
Close the iterator.
|
protected VirtualCopy |
createCopy(NodeInfo node,
NodeInfo root)
Method to create the virtual copy of a node encountered when navigating.
|
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 |
getProperties()
Get properties of this iterator, as a bit-significant integer.
|
java.lang.CharSequence |
getStringValue()
Return the string value of the current node.
|
AxisIterator |
iterateAxis(byte axis,
NodeTest test)
Return an iterator over an axis, starting at the current node.
|
boolean |
moveNext()
Move to the next node, without returning it.
|
Item |
next()
Get the next item in the sequence.
|
int |
position()
Get the current position
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protected AxisIterator base
protected NodeInfo subtreeRoot
public VirtualCopier(AxisIterator base, VirtualCopy parent, NodeInfo subtreeRoot)
public boolean moveNext()
moveNext
???? AxisIterator
public Item next()
next
???? SequenceIterator
next
???? UnfailingIterator
public Item current()
current
???? SequenceIterator
current
???? UnfailingIterator
public int position()
position
???? SequenceIterator
position
???? UnfailingIterator
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
???? SequenceIterator
public AxisIterator iterateAxis(byte axis, NodeTest test)
iterateAxis
???? AxisIterator
axis
- the axis to iterate over, using a constant such as
Axis.CHILD
test
- a predicate to apply to the nodes before returning them.java.lang.NullPointerException
- if there is no current nodepublic Value atomize() throws XPathException
atomize
???? AxisIterator
java.lang.NullPointerException
- if there is no current nodeXPathException
public java.lang.CharSequence getStringValue()
getStringValue
???? AxisIterator
java.lang.NullPointerException
- if there is no current nodepublic SequenceIterator getAnother()
getAnother
???? SequenceIterator
getAnother
???? UnfailingIterator
public int getProperties()
getProperties
???? 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.protected VirtualCopy createCopy(NodeInfo node, NodeInfo root)
node
- the node to be copiedroot
- the root of the tree