org.eigenbase.util
Class CastingList<E>

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractList<E>
          org.eigenbase.util.CastingList<E>

All Implemented Interfaces:

Iterable<E>, Collection<E>, List<E>

public class CastingList<E>
extends AbstractList<E>
implements List<E>

Converts a list whose members are automatically down-cast to a given type.

If a member of the backing list is not an instanceof E, the accessing method (such as List.get(int)) will throw a ClassCastException.

All modifications are automatically written to the backing list. Not synchronized.

Version:

$Id: //open/dev/farrago/src/org/eigenbase/util/CastingList.java#5 $

Author:

jhyde

Field Summary

private Class<E>	clazz
private List<? super E>	list

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

protected

CastingList(List<? super E> list, Class<E> clazz)

Method Summary

void	add(int pos, E o)
E	get(int index)
E	remove(int index)
E	set(int index, E element)
int	size()

Methods inherited from class java.util.AbstractList

add, addAll, clear, equals, hashCode, indexOf, iterator, lastIndexOf, listIterator, listIterator, removeRange, subList

Methods inherited from class java.util.AbstractCollection

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

add, addAll, addAll, clear, contains, containsAll, equals, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, removeAll, retainAll, subList, toArray, toArray

Field Detail

list

private final List<? super E> list

clazz

private final Class<E> clazz

Constructor Detail

CastingList

protected CastingList(List<? super E> list,
                      Class<E> clazz)

Method Detail

get

public E get(int index)

Specified by:

get in interface List<E>

Specified by:

get in class AbstractList<E>

size

public int size()

Specified by:

size in interface Collection<E>

Specified by:

size in interface List<E>

Specified by:

size in class AbstractCollection<E>

set

public E set(int index,
             E element)

Specified by:

set in interface List<E>

Overrides:

set in class AbstractList<E>

remove

public E remove(int index)

Specified by:

remove in interface List<E>

Overrides:

remove in class AbstractList<E>

add

public void add(int pos,
                E o)

Specified by:

add in interface List<E>

Overrides:

add in class AbstractList<E>