Package org.apache.commons.collections4.collection

Class UnmodifiableBoundedCollection<E>

java.lang.Object

org.apache.commons.collections4.collection.AbstractCollectionDecorator<E>

org.apache.commons.collections4.collection.UnmodifiableBoundedCollection<E>

Type Parameters:

E - the type of elements in this collection

All Implemented Interfaces:

Serializable, Iterable<E>, Collection<E>, BoundedCollection<E>, Unmodifiable

public final class UnmodifiableBoundedCollection<E>
extends AbstractCollectionDecorator<E>
implements BoundedCollection<E>, Unmodifiable

UnmodifiableBoundedCollection decorates another BoundedCollection to ensure it can't be altered.

If a BoundedCollection is first wrapped in some other collection decorator, such as synchronized or predicated, the BoundedCollection methods are no longer accessible. The factory on this class will attempt to retrieve the bounded nature by examining the package scope variables.

This class is Serializable from Commons Collections 3.1.

Attempts to modify it will result in an UnsupportedOperationException.

Since:

3.0

See Also:

Serialized Form

Method Summary

Modifier and Type	Method	Description
boolean	add(E object)
boolean	addAll(Collection<? extends E> coll)
void	clear()
protected BoundedCollection<E>	decorated()	Gets the collection being decorated.
boolean	isFull()	Returns true if this collection is full and no new elements can be added.
Iterator<E>	iterator()
int	maxSize()	Gets the maximum size of the collection (the bound).
boolean	remove(Object object)
boolean	removeAll(Collection<?> coll)
boolean	retainAll(Collection<?> coll)
static <E> BoundedCollection<E>	unmodifiableBoundedCollection(Collection<? extends E> coll)	Factory method to create an unmodifiable bounded collection.
static <E> BoundedCollection<E>	unmodifiableBoundedCollection(BoundedCollection<? extends E> coll)	Factory method to create an unmodifiable bounded collection.

Methods inherited from class org.apache.commons.collections4.collection.AbstractCollectionDecorator

contains, containsAll, isEmpty, setCollection, size, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

contains, containsAll, equals, hashCode, isEmpty, parallelStream, removeIf, size, spliterator, stream, toArray, toArray, toArray

Methods inherited from interface java.lang.Iterable

forEach

Method Detail

unmodifiableBoundedCollection

public static <E> BoundedCollection<E> unmodifiableBoundedCollection(BoundedCollection<? extends E> coll)

Factory method to create an unmodifiable bounded collection.

Type Parameters:

E - the type of the elements in the collection

Parameters:

coll - the BoundedCollection to decorate, must not be null

Returns:

a new unmodifiable bounded collection

Throws:

NullPointerException - if coll is null

Since:

4.0

unmodifiableBoundedCollection

public static <E> BoundedCollection<E> unmodifiableBoundedCollection(Collection<? extends E> coll)

Factory method to create an unmodifiable bounded collection.

This method is capable of drilling down through up to 1000 other decorators to find a suitable BoundedCollection.

Type Parameters:

E - the type of the elements in the collection

Parameters:

coll - the BoundedCollection to decorate, must not be null

Returns:

a new unmodifiable bounded collection

Throws:

NullPointerException - if coll is null

IllegalArgumentException - if coll is not a BoundedCollection

Since:

4.0

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in interface Iterable<E>

Overrides:

iterator in class AbstractCollectionDecorator<E>

add

public boolean add(E object)

Specified by:

add in interface Collection<E>

Overrides:

add in class AbstractCollectionDecorator<E>

addAll

public boolean addAll(Collection<? extends E> coll)

Specified by:

addAll in interface Collection<E>

Overrides:

addAll in class AbstractCollectionDecorator<E>

clear

public void clear()

Specified by:

clear in interface Collection<E>

Overrides:

clear in class AbstractCollectionDecorator<E>

remove

public boolean remove(Object object)

Specified by:

remove in interface Collection<E>

Overrides:

remove in class AbstractCollectionDecorator<E>

removeAll

public boolean removeAll(Collection<?> coll)

Specified by:

removeAll in interface Collection<E>

Overrides:

removeAll in class AbstractCollectionDecorator<E>

retainAll

public boolean retainAll(Collection<?> coll)

Specified by:

retainAll in interface Collection<E>

Overrides:

retainAll in class AbstractCollectionDecorator<E>

isFull

public boolean isFull()

Description copied from interface: BoundedCollection

Returns true if this collection is full and no new elements can be added.

Specified by:

isFull in interface BoundedCollection<E>

Returns:

true if the collection is full

maxSize

public int maxSize()

Description copied from interface: BoundedCollection

Gets the maximum size of the collection (the bound).

Specified by:

maxSize in interface BoundedCollection<E>

Returns:

the maximum number of elements the collection can hold

decorated

protected BoundedCollection<E> decorated()

Description copied from class: AbstractCollectionDecorator

Gets the collection being decorated. All access to the decorated collection goes via this method.

Overrides:

decorated in class AbstractCollectionDecorator<E>

Returns:

the decorated collection