abstract class TreeEnumeration extends java.lang.Object implements AxisIterator, LookaheadIterator
Modifier and Type | Field and Description |
---|---|
protected NodeImpl |
current |
protected NodeImpl |
next |
protected NodeTest |
nodeTest |
protected int |
position |
protected NodeImpl |
start |
ATOMIZABLE, GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD
Constructor and Description |
---|
TreeEnumeration(NodeImpl origin,
NodeTest nodeTest)
Create an axis enumeration for a given type and name of node, from a given
origin node
|
Modifier and Type | Method and Description |
---|---|
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
|
int |
getProperties()
Get properties of this iterator, as a bit-significant integer.
|
boolean |
hasNext()
Determine whether there are more items to come.
|
Item |
next()
Return the next node in the enumeration
|
int |
position()
Return the current position
|
protected abstract void |
step()
Advance one step along the axis: the resulting node might not meet the required
criteria for inclusion
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
getAnother
protected NodeImpl start
protected NodeImpl next
protected NodeTest nodeTest
protected NodeImpl current
protected int position
public TreeEnumeration(NodeImpl origin, NodeTest nodeTest)
origin
- the node from which the axis originatesnodeTest
- test to be satisfied by the returned nodes, or null if all nodes
are to be returned.protected boolean conforms(NodeImpl node)
protected final void advance()
protected abstract void step()
public boolean hasNext()
hasNext
in interface LookaheadIterator
public final Item next()
next
in interface AxisIterator
next
in interface SequenceIterator
public final Item current()
current
in interface AxisIterator
current
in interface SequenceIterator
public final int position()
position
in interface AxisIterator
position
in interface SequenceIterator
public int getProperties()
getProperties
in interface SequenceIterator
GROUNDED
, LAST_POSITION_FINDER
,
and 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.