net.sf.saxon.tree
Class AncestorEnumeration

java.lang.Object
  net.sf.saxon.tree.TreeEnumeration
      net.sf.saxon.tree.AncestorEnumeration

All Implemented Interfaces:

AxisIterator, SequenceIterator

final class AncestorEnumeration

extends TreeEnumeration

Field Summary

protected NodeImpl	current
protected NodeImpl	next
protected NodeTest	nodeTest
protected int	position
protected NodeImpl	start

Constructor Summary

AncestorEnumeration(NodeImpl node, NodeTest nodeTest, boolean includeSelf)

Method Summary

protected void	advance() Advance along the axis until a node is found that matches the required criteria
protected boolean	conforms(NodeImpl node) Test whether a node conforms to the node type and name constraints.
Item	current() Return the current Item
SequenceIterator	getAnother() Get another enumeration of the same nodes
Item	next() Return the next node in the enumeration
int	position() Return the current position
protected void	step() Advance one step along the axis: the resulting node might not meet the required criteria for inclusion

Methods inherited from class java.lang.Object

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

Field Detail

start

protected NodeImpl start

next

protected NodeImpl next

nodeTest

protected NodeTest nodeTest

current

protected NodeImpl current

position

protected int position

Constructor Detail

AncestorEnumeration

public AncestorEnumeration(NodeImpl node,
                           NodeTest nodeTest,
                           boolean includeSelf)

Method Detail

step

protected void step()

Description copied from class: TreeEnumeration

Advance one step along the axis: the resulting node might not meet the required criteria for inclusion

Specified by:

step in class TreeEnumeration

getAnother

public SequenceIterator getAnother()

Get another enumeration of the same nodes

Returns:

a new iterator over the same sequence

conforms

protected boolean conforms(NodeImpl node)

Test whether a node conforms to the node type and name constraints. Note that this returns true if the supplied node is null, this is a way of terminating a loop.

advance

protected final void advance()

Advance along the axis until a node is found that matches the required criteria

next

public final Item next()

Return the next node in the enumeration

Specified by:

next in interface AxisIterator

Returns:

the next Item. If there are no more nodes, return null.

current

public final Item current()

Return the current Item

Specified by:

current in interface AxisIterator

Returns:

the current item, that is, the item most recently returned by next()

position

public final int position()

Return the current position

Specified by:

position in interface AxisIterator

Returns:

the position of the current item (the item most recently returned by next()), starting at 1 for the first node