com.klg.jclass.util.formulae
Class TableExpressionListIterator

java.lang.Object
  |
  +--com.klg.jclass.util.formulae.TableExpressionListIterator

All Implemented Interfaces:

Iterator, ListIterator

public class TableExpressionListIterator

extends Object

implements Iterator, ListIterator

TableExpressionListIterator implements the ListIterator interface to allow iteration over the elements of a TableExpressionList.

Field Summary

protected int	currentPosition The current position in the list
protected int	endPosition The last position of the list
protected int	lastAccess The position in the list of the last element read by next() or previous()
protected com.klg.jclass.util.formulae.TableExpressionList	tableList The ExpressionList we're iterating over

Constructor Summary

TableExpressionListIterator(com.klg.jclass.util.formulae.TableExpressionList tel)
Create an iterator over the given TableExpressionList

TableExpressionListIterator(com.klg.jclass.util.formulae.TableExpressionList tel, int firstIndex)
Create an iterator over the given TableExpressionList, starting at the given initial position.

Method Summary

void	add(Object obj) Insert a new element into the list at the current position NOTE: add() is not supported on TableExpressionLists
boolean	hasNext() Determines if there is another element in the forward direction
boolean	hasPrevious() Determines if there is previous element in the List (backward)
Object	next() Get the next element in the List (forward direction)
int	nextIndex() Get the index of the element that would be returned if next() were called
Object	previous() Get the previous element in the List (backward direction)
int	previousIndex() Get the index of the element that would be returned if previous() were called
void	remove() Remove the last accessed element of the List NOTE: remove() is not supported on TableExpressionLists
void	set(Object obj) Replace the last accessed element of the List NOTE: set() is not supported on TableExpressionLists

Methods inherited from class java.lang.Object

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

Field Detail

tableList

protected com.klg.jclass.util.formulae.TableExpressionList tableList

The ExpressionList we're iterating over

currentPosition

protected int currentPosition

The current position in the list

endPosition

protected int endPosition

The last position of the list

lastAccess

protected int lastAccess

The position in the list of the last element read by next() or previous()

Constructor Detail

TableExpressionListIterator

public TableExpressionListIterator(com.klg.jclass.util.formulae.TableExpressionList tel)

Create an iterator over the given TableExpressionList

Parameters:

tel - The TableExpressionList to iterate over

TableExpressionListIterator

public TableExpressionListIterator(com.klg.jclass.util.formulae.TableExpressionList tel,
                                   int firstIndex)

Create an iterator over the given TableExpressionList, starting at the given initial position.

Parameters:

tel - The TableExpressionList to iterate over

Method Detail

hasNext

public boolean hasNext()

Determines if there is another element in the forward direction

Specified by:

hasNext in interface Iterator

Returns:

True if there is another (following) element in the List

hasPrevious

public boolean hasPrevious()

Determines if there is previous element in the List (backward)

Specified by:

hasPrevious in interface ListIterator

Returns:

True if there is a preceding element in the List

next

public Object next()

Get the next element in the List (forward direction)

Specified by:

next in interface Iterator

Returns:

The next element in the List

nextIndex

public int nextIndex()

Get the index of the element that would be returned if next() were called

Specified by:

nextIndex in interface ListIterator

Returns:

The index of the next element

previous

public Object previous()

Get the previous element in the List (backward direction)

Specified by:

previous in interface ListIterator

Returns:

The previous element in the List

previousIndex

public int previousIndex()

Get the index of the element that would be returned if previous() were called

Specified by:

previousIndex in interface ListIterator

Returns:

The index of the previous element

remove

public void remove()

Remove the last accessed element of the List NOTE: remove() is not supported on TableExpressionLists

Specified by:

remove in interface Iterator

set

public void set(Object obj)

Replace the last accessed element of the List NOTE: set() is not supported on TableExpressionLists

Specified by:

set in interface ListIterator

Parameters:

obj - The object to replace the last element with

add

public void add(Object obj)

Insert a new element into the list at the current position NOTE: add() is not supported on TableExpressionLists

Specified by:

add in interface ListIterator

Parameters:

obj - The object to insert into the List