com.klg.jclass.datasource
Class TreeIterator

java.lang.Object
  |
  +--com.klg.jclass.datasource.TreeIterator

All Implemented Interfaces:

Serializable, TreeIteratorModel

Direct Known Subclasses:

ForwardTreeIterator, ReverseTreeIterator

public class TreeIterator

extends Object

implements TreeIteratorModel

Iterates over the siblings of a tree; extends TreeIteratorModel.

See Also:

Serialized Form

Field Summary

protected Vector	children
protected int	currentNode
protected int	firstNode

Fields inherited from interface com.klg.jclass.datasource.TreeIteratorModel

serialVersionUID

Constructor Summary

TreeIterator(com.klg.jclass.datasource.DataSourceTreeNode startNode)

Method Summary

void	advance() Move to the next element in this iterator's list.
void	advance(int offset) Move ahead a specified number of elements in this iterator's list.
boolean	atBegin() Returns boolean: true if iterator is positioned at the beginning of list, false otherwise.
boolean	atEnd() Returns boolean: true if iterator is positioned at the end of list, false otherwise.
Object	clone() Return a copy of the current node.*
Object	get() Return the current node.
boolean	hasMoreElements() Returns boolean: true if this node has more children, false otherwise.
Object	nextElement() Return the next child of this node.

Methods inherited from class java.lang.Object

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

Field Detail

firstNode

protected int firstNode

currentNode

protected int currentNode

children

protected Vector children

Constructor Detail

TreeIterator

public TreeIterator(com.klg.jclass.datasource.DataSourceTreeNode startNode)

Method Detail

nextElement

public Object nextElement()

Description copied from interface: TreeIteratorModel

Return the next child of this node.

Specified by:

nextElement in interface TreeIteratorModel

Returns:

the Object which is the next child of this node

hasMoreElements

public boolean hasMoreElements()

Description copied from interface: TreeIteratorModel

Returns boolean: true if this node has more children, false otherwise.

Specified by:

hasMoreElements in interface TreeIteratorModel

Returns:

boolean: true if there are more children, false otherwise

atBegin

public boolean atBegin()

Description copied from interface: TreeIteratorModel

Returns boolean: true if iterator is positioned at the beginning of list, false otherwise.

Specified by:

atBegin in interface TreeIteratorModel

Returns:

boolean: true if positioned at start of list, false otherwise

get

public Object get()

Description copied from interface: TreeIteratorModel

Return the current node.

Specified by:

get in interface TreeIteratorModel

Returns:

the Object on which the iterator is currently positioned

advance

public void advance(int offset)

Description copied from interface: TreeIteratorModel

Move ahead a specified number of elements in this iterator's list.

Specified by:

advance in interface TreeIteratorModel

clone

public Object clone()

Description copied from interface: TreeIteratorModel

Return a copy of the current node.*

Specified by:

clone in interface TreeIteratorModel

Overrides:

clone in class Object

Returns:

an Object which is a copy of the current node

atEnd

public boolean atEnd()

Description copied from interface: TreeIteratorModel

Returns boolean: true if iterator is positioned at the end of list, false otherwise.

Specified by:

atEnd in interface TreeIteratorModel

Returns:

boolean: true if positioned at end of list, false otherwise

advance

public void advance()

Description copied from interface: TreeIteratorModel

Move to the next element in this iterator's list.

Specified by:

advance in interface TreeIteratorModel