net.sf.saxon.tree.iter

Class AxisIteratorImpl

java.lang.Object

net.sf.saxon.tree.iter.AxisIteratorImpl

All Implemented Interfaces:

SequenceIterator, AxisIterator, UnfailingIterator

Direct Known Subclasses:

AxiomDocument.FollowingSiblingIterator, AxiomDocument.PrecedingSiblingIterator, AxiomDocumentNodeWrapper.FollowingSiblingIterator, AxiomDocumentNodeWrapper.PrecedingSiblingIterator, AxiomParentNodeWrapper.ChildWrappingIterator, AxiomParentNodeWrapper.DescendantWrappingIterator, Navigator.AncestorEnumeration, Navigator.AxisFilter, Navigator.DescendantEnumeration, Navigator.EmptyTextFilter, Navigator.FollowingEnumeration, Navigator.PrecedingEnumeration

public abstract class AxisIteratorImpl
extends Object
implements AxisIterator

A SequenceIterator is used to iterate over a sequence. An AxisIterator is a SequenceIterator that always iterates over a set of nodes, and that throws no exceptions; it also supports the ability to find the last() position, again with no exceptions. This class is an abstract implementation of AxisIterator that is used as a base class for many concrete implementations. The main functionality that it provides is maintaining the current position.

Field Summary

Fields inherited from interface net.sf.saxon.om.SequenceIterator

ATOMIZING, GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD

Constructor Summary

Constructors

Constructor and Description
AxisIteratorImpl()

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Close the iterator.
int	getProperties() Get properties of this iterator, as a bit-significant integer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface net.sf.saxon.tree.iter.AxisIterator

getAnother, next

Constructor Detail

AxisIteratorImpl

public AxisIteratorImpl()

Method Detail

close

public void close()

Description copied from interface: SequenceIterator

Close the iterator. This indicates to the supplier of the data that the client does not require any more items to be delivered by the iterator. This may enable the supplier to release resources. After calling close(), no further calls on the iterator should be made; if further calls are made, the effect of such calls is undefined.

(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.)

Specified by:

close in interface SequenceIterator

getProperties

public int getProperties()

Get properties of this iterator, as a bit-significant integer.

Specified by:

getProperties in interface SequenceIterator

Returns:

the properties of this iterator. This will be some combination of properties such as 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.