com.neeve.util

Class UtlListElement

java.lang.Object

com.neeve.util.UtlListElement

Direct Known Subclasses:

AepBusManager, Event, MessageMetadata, MessageViewImpl, PktSerializable, UtlList, UtlPlist.Element, com.neeve.xbuf.XbufField

public abstract class UtlListElement
extends Object

Doubly linked list element.

This class represents elements of an UtlList.

This class IS NOT intended to be used by end users.

Threading:

This class is not safe for concurrent access by multiple threads.

Field Summary

Fields

Modifier and Type	Field and Description
int	count Number of elements in list (>=0 for head, -1 for others)
UtlListElement	head List that this element is part of.
UtlListElement	next Element that follows this element in the list
UtlListElement	prev Element that preceded this element in the list

Method Summary

Modifier and Type	Method and Description
int	count() Get num elements in list
void	insertAfter(UtlListElement element) Insert an element in the list after this element
void	insertBefore(UtlListElement element) Insert an element in the list before this element
boolean	isLinked() Get whether this element is linked into a list
UtlListElement	next() Get element in the list following this element
UtlListElement	previous() Get element in list preceding this element
void	unlink() Remove an element from a list This method removes an element from a list.
void	wipe() Initialize This method is for internal use and should never be called directly

Methods inherited from class java.lang.Object

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

Field Detail

head

public volatile UtlListElement head

List that this element is part of.

next

public volatile UtlListElement next

Element that follows this element in the list

prev

public volatile UtlListElement prev

Element that preceded this element in the list

count

public volatile int count

Number of elements in list (>=0 for head, -1 for others)

Method Detail

wipe

public final void wipe()

Initialize

This method is for internal use and should never be called directly

insertBefore

public final void insertBefore(UtlListElement element)

Insert an element in the list before this element

Parameters:

element - The element to be inserted

Threading:

This method is not safe for concurrent access by multiple threads

insertAfter

public final void insertAfter(UtlListElement element)

Insert an element in the list after this element

Parameters:

element - The element to be inserted

Threading:

This method is not safe for concurrent access by multiple threads

isLinked

public final boolean isLinked()

Get whether this element is linked into a list

Returns:

true in case it it present in a list. False otherwise.

Threading:

This method is not safe for concurrent access by multiple threads

unlink

public final void unlink()

Remove an element from a list

This method removes an element from a list. Note that since a list head UtlList is a special kind of list element, this method can also remove a head element from a list. That would be catastrophic.

Threading:

This method is not safe for concurrent access by multiple threads

next

public final UtlListElement next()

Get element in the list following this element

Returns:

Next element in list

Threading:

This method is not safe for concurrent access by multiple threads

previous

public final UtlListElement previous()

Get element in list preceding this element

Returns:

Previous element in list

Threading:

This method is not safe for concurrent access by multiple threads

count

public final int count()

Get num elements in list

Returns:

Number of elements in list

Threading:

This method is not safe for concurrent access by multiple threads