java.lang.Object
- org.eclipse.epsilon.common.concurrent.ConcurrentCASList<E>

All Implemented Interfaces:

Iterable<E>, Collection<E>, List<E>
```
public class ConcurrentCASList<E>
extends Object
implements List<E>
```
A List implementation intended to be used in places where an API requires a List but doesn't actually use the indexes - it just needs ordering. In concurrent environments, Lists are highly inconvenient due to their sequential nature. This class therefore mimics a list when infact it's actually a ConcurrentLinkedDeque.

AS A RESULT, USERS SHOULD NOT RELY ON INDEXES! THIS LIST IS SIMPLY A FACADE FOR POORLY DESIGNED / OVERSPECIFIED APIs WITH NO REGARDS FOR CONCURRENCY.

Since:

1.6

Author:

Sina Madani

Field Summary

Fields
Modifier and Type Field Description

protected AtomicInteger cachedSize

protected ConcurrentLinkedDeque<E> deque

Constructor Summary

Constructors
Constructor Description

ConcurrentCASList()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`add(int index, E element)`
`boolean`	`add(E element)`
`boolean`	`addAll(int index, Collection<? extends E> col)`
`boolean`	`addAll(Collection<? extends E> elements)`
`void`	`clear()`
`boolean`	`contains(Object element)`
`boolean`	`containsAll(Collection<?> elements)`
`E`	`get(int index)`
`int`	`indexOf(Object element)`
`boolean`	`isEmpty()`
`Iterator<E>`	`iterator()`
`int`	`lastIndexOf(Object element)`
`ListIterator<E>`	`listIterator()`
`ListIterator<E>`	`listIterator(int index)`
`E`	`remove(int index)`
`boolean`	`remove(Object element)`
`boolean`	`removeAll(Collection<?> elements)`
`boolean`	`retainAll(Collection<?> elements)`
`E`	`set(int index, E element)`
`int`	`size()`
`List<E>`	`subList(int from, int to)`
`Object[]`	`toArray()`
`<T> T[]`	`toArray(T[] arr)`
`protected boolean`	`validateIndex(int index)`	Checks whether index is 0 or the size of the list.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Collection
parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable
forEach

Methods inherited from interface java.util.List
equals, hashCode, replaceAll, sort, spliterator

- Field Detail
  - deque
```
protected final ConcurrentLinkedDeque<E> deque
```
  - cachedSize
```
protected final AtomicInteger cachedSize
```
- Constructor Detail
  - ConcurrentCASList
```
public ConcurrentCASList()
```
- Method Detail
  - validateIndex
```
protected final boolean validateIndex(int index)
```
    Checks whether index is 0 or the size of the list.
    
    Returns:
    
    true means first, false means last.
    
    Throws:
    
    UnsupportedOperationException - if index is not 0 or size().
  - get
```
public E get(int index)
```
    Specified by:
    
    get in interface List<E>
  - size
```
public int size()
```
    Specified by:
    
    size in interface Collection<E>
    
    Specified by:
    
    size in interface List<E>
  - add
```
public void add(int index,
                E element)
```
    Specified by:
    
    add in interface List<E>
  - set
```
public E set(int index,
             E element)
```
    Specified by:
    
    set in interface List<E>
  - remove
```
public E remove(int index)
```
    Specified by:
    
    remove in interface List<E>
  - addAll
```
public boolean addAll(int index,
                      Collection<? extends E> col)
```
    Specified by:
    
    addAll in interface List<E>
  - add
```
public boolean add(E element)
```
    Specified by:
    
    add in interface Collection<E>
    
    Specified by:
    
    add in interface List<E>
  - addAll
```
public boolean addAll(Collection<? extends E> elements)
```
    Specified by:
    
    addAll in interface Collection<E>
    
    Specified by:
    
    addAll in interface List<E>
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface Collection<E>
    
    Specified by:
    
    clear in interface List<E>
  - contains
```
public boolean contains(Object element)
```
    Specified by:
    
    contains in interface Collection<E>
    
    Specified by:
    
    contains in interface List<E>
  - containsAll
```
public boolean containsAll(Collection<?> elements)
```
    Specified by:
    
    containsAll in interface Collection<E>
    
    Specified by:
    
    containsAll in interface List<E>
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface Collection<E>
    
    Specified by:
    
    isEmpty in interface List<E>
  - iterator
```
public Iterator<E> iterator()
```
    Specified by:
    
    iterator in interface Collection<E>
    
    Specified by:
    
    iterator in interface Iterable<E>
    
    Specified by:
    
    iterator in interface List<E>
  - remove
```
public boolean remove(Object element)
```
    Specified by:
    
    remove in interface Collection<E>
    
    Specified by:
    
    remove in interface List<E>
  - removeAll
```
public boolean removeAll(Collection<?> elements)
```
    Specified by:
    
    removeAll in interface Collection<E>
    
    Specified by:
    
    removeAll in interface List<E>
  - toArray
```
public Object[] toArray()
```
    Specified by:
    
    toArray in interface Collection<E>
    
    Specified by:
    
    toArray in interface List<E>
  - toArray
```
public <T> T[] toArray(T[] arr)
```
    Specified by:
    
    toArray in interface Collection<E>
    
    Specified by:
    
    toArray in interface List<E>
  - retainAll
```
public boolean retainAll(Collection<?> elements)
```
    Specified by:
    
    retainAll in interface Collection<E>
    
    Specified by:
    
    retainAll in interface List<E>
  - indexOf
```
public int indexOf(Object element)
```
    Specified by:
    
    indexOf in interface List<E>
  - lastIndexOf
```
public int lastIndexOf(Object element)
```
    Specified by:
    
    lastIndexOf in interface List<E>
  - listIterator
```
public ListIterator<E> listIterator()
```
    Specified by:
    
    listIterator in interface List<E>
  - listIterator
```
public ListIterator<E> listIterator(int index)
```
    Specified by:
    
    listIterator in interface List<E>
  - subList
```
public List<E> subList(int from,
                       int to)
```
    Specified by:
    
    subList in interface List<E>

Modifier and Type	Field	Description
`protected AtomicInteger`	`cachedSize`
`protected ConcurrentLinkedDeque<E>`	`deque`

Class ConcurrentCASList<E>

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Collection

Methods inherited from interface java.lang.Iterable

Methods inherited from interface java.util.List

Field Detail

deque

cachedSize

Constructor Detail

ConcurrentCASList

Method Detail

validateIndex

get

size

add

set

remove

addAll

add

addAll

clear

contains

containsAll

isEmpty

iterator

remove

removeAll

toArray

toArray

retainAll

indexOf

lastIndexOf

listIterator

listIterator

subList