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java.lang.Object com.saxonica.stream.ManualIterator
public class ManualIterator
ManualIterator: a pseudo-iterator used while streaming. It has a current node and a current position which are set manually. Calling last() is an error. Calling next() always returns null.
Field Summary |
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Fields inherited from interface net.sf.saxon.om.SequenceIterator |
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GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD |
Constructor Summary | |
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ManualIterator()
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ManualIterator(Item value,
int position)
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Method Summary | |
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void |
close()
Close the iterator. |
Item |
current()
Get the current item in the sequence. |
UnfailingIterator |
getAnother()
Get another iterator over the same sequence of items, positioned at the start of the sequence. |
int |
getLength()
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. |
UnfailingIterator |
getReverseIterator()
Get a new SequenceIterator that returns the same items in reverse order. |
boolean |
hasNext()
Determine whether there are more items to come. |
void |
incrementPosition()
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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. |
int |
position()
Return the current position in the sequence. |
void |
setContextItem(Item value)
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void |
setLastPositionFinder(LastPositionFinder finder)
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ManualIterator()
public ManualIterator(Item value, int position)
Method Detail |
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public void setContextItem(Item value)
public void setLastPositionFinder(LastPositionFinder finder)
public void incrementPosition()
public boolean hasNext()
hasNext
in interface LookaheadIterator
public Item next()
UnfailingIterator
next
in interface SequenceIterator
next
in interface UnfailingIterator
public Item current()
UnfailingIterator
current
in interface SequenceIterator
current
in interface UnfailingIterator
public int position()
position
in interface SequenceIterator
position
in interface UnfailingIterator
public int getLength() throws XPathException
LastPositionFinder
SequenceIterator.LAST_POSITION_FINDER
getLength
in interface LastPositionFinder
XPathException
- if an error occurs evaluating the sequence in order to determine
the number of itemspublic 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 UnfailingIterator getAnother()
UnfailingIterator
getAnother
in interface SequenceIterator
getAnother
in interface UnfailingIterator
public UnfailingIterator getReverseIterator()
ReversibleIterator
getReverseIterator
in interface ReversibleIterator
public GroundedValue materialize()
materialize
in interface GroundedIterator
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.
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