E
- the type of elements in this bagpublic abstract class AbstractBagDecorator<E> extends AbstractCollectionDecorator<E> implements Bag<E>
Bag
to provide additional behaviour.
Methods are forwarded directly to the decorated bag.
Modifier | Constructor and Description |
---|---|
protected |
AbstractBagDecorator()
Constructor only used in deserialization, do not use otherwise.
|
protected |
AbstractBagDecorator(Bag<E> bag)
Constructor that wraps (not copies).
|
Modifier and Type | Method and Description |
---|---|
boolean |
add(E object,
int count)
Adds
nCopies copies of the specified object to the Bag. |
protected Bag<E> |
decorated()
Gets the bag being decorated.
|
boolean |
equals(Object object) |
int |
getCount(Object object)
Returns the number of occurrences (cardinality) of the given
object currently in the bag.
|
int |
hashCode() |
boolean |
remove(Object object,
int count)
Removes
nCopies copies of the specified object from the Bag. |
Set<E> |
uniqueSet()
Returns a
Set of unique elements in the Bag. |
add, addAll, clear, contains, containsAll, isEmpty, iterator, remove, removeAll, removeIf, retainAll, setCollection, size, toArray, toArray, toString
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
add, containsAll, iterator, remove, removeAll, retainAll, size
addAll, clear, contains, isEmpty, parallelStream, removeIf, spliterator, stream, toArray, toArray
protected AbstractBagDecorator()
protected AbstractBagDecorator(Bag<E> bag)
bag
- the bag to decorate, must not be nullNullPointerException
- if bag is nullprotected Bag<E> decorated()
decorated
in class AbstractCollectionDecorator<E>
public boolean equals(Object object)
equals
in interface Collection<E>
equals
in class Object
public int hashCode()
hashCode
in interface Collection<E>
hashCode
in class Object
public int getCount(Object object)
Bag
public boolean add(E object, int count)
Bag
nCopies
copies of the specified object to the Bag.
If the object is already in the Bag.uniqueSet()
then increment its
count as reported by Bag.getCount(Object)
. Otherwise add it to the
Bag.uniqueSet()
and report its count as nCopies
.
public boolean remove(Object object, int count)
Bag
nCopies
copies of the specified object from the Bag.
If the number of copies to remove is greater than the actual number of copies in the Bag, no error is thrown.
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