org.cdlib.xtf.lazyTree
Class AttributeEnumeration

Object
  AxisIteratorImpl
      AttributeEnumeration

All Implemented Interfaces:

AxisIterator, LookaheadIterator, SequenceIterator, UnfailingIterator

final class AttributeEnumeration
extends AxisIteratorImpl
implements LookaheadIterator

AttributeEnumeration is an enumeration of all the attribute nodes of an Element.

Field Summary

private ElementImpl	element
private int	index
private int	length
private NodeInfo	next
private NodeTest	nodeTest

Fields inherited from class AxisIteratorImpl

current, position

Fields inherited from interface SequenceIterator

GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD

Constructor Summary

AttributeEnumeration(NodeImpl node, NodeTest nodeTest)
Constructor

Method Summary

private void	advance() Move to the next node in the enumeration.
SequenceIterator	getAnother() Get another enumeration of the same nodes
int	getProperties() Get properties of this iterator, as a bit-significant integer.
boolean	hasNext() Test if there are mode nodes still to come.
Item	next() Get the next node in the iteration, or null if there are no more.

Methods inherited from class AxisIteratorImpl

atomize, current, getStringValue, iterateAxis, moveNext, position

Methods inherited from class Object

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

Methods inherited from interface SequenceIterator

current, position

Field Detail

element

private ElementImpl element

nodeTest

private NodeTest nodeTest

next

private NodeInfo next

index

private int index

length

private int length

Constructor Detail

AttributeEnumeration

public AttributeEnumeration(NodeImpl node,
                            NodeTest nodeTest)

Constructor

Parameters:

node - the element whose attributes are required. This may be any type of node, but if it is not an element the enumeration will be empty

nodeTest - condition to be applied to the names of the attributes selected

Method Detail

hasNext

public boolean hasNext()

Test if there are mode nodes still to come. ("elements" is used here in the sense of the Java enumeration class, not in the XML sense)

Specified by:

hasNext in interface LookaheadIterator

next

public Item next()

Get the next node in the iteration, or null if there are no more.

Specified by:

next in interface SequenceIterator

Specified by:

next in interface UnfailingIterator

advance

private void advance()

Move to the next node in the enumeration.

getAnother

public SequenceIterator getAnother()

Get another enumeration of the same nodes

Specified by:

getAnother in interface SequenceIterator

Specified by:

getAnother in interface UnfailingIterator

getProperties

public int getProperties()

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

Specified by:

getProperties in interface SequenceIterator

Overrides:

getProperties in class AxisIteratorImpl

Returns:

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