public class SynchronizedMultiSet<E> extends SynchronizedCollection<E> implements MultiSet <E>
MultiSet to synchronize its behaviour for a multi-threaded environment.
Methods are synchronized, then forwarded to the decorated multiset. Iterators must be separately synchronized around the loop.
MultiSet.Entry <E> lock| Modifier | Constructor and Description |
|---|---|
protected |
SynchronizedMultiSet(MultiSet
Constructor that wraps (not copies).
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protected |
SynchronizedMultiSet(MultiSet
Constructor that wraps (not copies).
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| Modifier and Type | Method and Description |
|---|---|
int |
add(E object, int count)
Adds a number of occurrences of the specified object to the MultiSet.
|
protected MultiSet |
decorated()
Gets the multiset being decorated.
|
Set |
entrySet()
Returns a
Set of all entries contained in the MultiSet.
|
boolean |
equals(Object
Compares this MultiSet to another object.
|
int |
getCount(Object
Returns the number of occurrences of the given object currently in the MultiSet.
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int |
hashCode()
Gets a hash code for the MultiSet compatible with the definition of equals.
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int |
remove(Object
Removes a number of occurrences of the specified object from the MultiSet.
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int |
setCount(E object, int count)
Sets the number of occurrences of the specified object in the MultiSet to the given count.
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static <E> SynchronizedMultiSet |
synchronizedMultiSet(MultiSet
Factory method to create a synchronized multiset.
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Set |
uniqueSet()
Returns a
Set of unique elements in the MultiSet.
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add, addAll, clear, contains, containsAll, isEmpty, iterator, remove, removeAll, retainAll, size, synchronizedCollection, toArray, toArray, toStringclone, finalize, getClass, notify, notifyAll, wait, wait, waitadd, containsAll, iterator, remove, removeAll, retainAll, sizeaddAll, clear, contains, isEmpty, parallelStream, removeIf, spliterator, stream, toArray, toArrayprotected SynchronizedMultiSet(MultiSet<E> multiset)
multiset - the multiset to decorate, must not be null
NullPointerException - if multiset is null
protected SynchronizedMultiSet(MultiSet<E> multiset, Object lock)
multiset - the multiset to decorate, must not be null
lock - the lock to use, must not be null
NullPointerException - if multiset or lock is null
public static <E> SynchronizedMultiSet<E> synchronizedMultiSet(MultiSet <E> multiset)
E - the type of the elements in the multiset
multiset - the multiset to decorate, must not be null
NullPointerException - if multiset is null
protected MultiSet<E> decorated()
decorated in class
SynchronizedCollection<E>
public boolean equals(Objectobject)
MultiSet
This MultiSet equals another object if it is also a MultiSet that contains the same number of occurrences of the same elements.
equals in interface
Collection<E>
equals in interface
MultiSet<E>
equals in class
SynchronizedCollection<E>
object - the object to compare to
public int hashCode()
MultiSet
(e==null ? 0 : e.hashCode()) ^ noOccurances).
hashCode in interface
Collection<E>
hashCode in interface
MultiSet<E>
hashCode in class
SynchronizedCollection<E>
public int add(E object, int count)
MultiSet
If the object is already in the MultiSet then increment its count as reported by MultiSet. Otherwise add it to the MultiSet and report its count as occurrences.
public int remove(Objectobject, int count)
MultiSet
If the number of occurrences to remove is greater than the actual number of occurrences in the multiset, the object will be removed from the multiset.
public int getCount(Objectobject)
MultiSet
public int setCount(E object, int count)
MultiSet
If the provided count is zero, the object will be removed from the MultiSet.
public Set<E> uniqueSet()
MultiSet
Set of unique elements in the MultiSet.
Uniqueness constraints are the same as those in Set.
The returned set is backed by this multiset, so any change to either is immediately reflected in the other. Only removal operations are supported, in which case all occurrences of the element are removed from the backing multiset.
public Set<MultiSet .Entry <E>> entrySet()
MultiSet
Set of all entries contained in the MultiSet.
The returned set is backed by this multiset, so any change to either is immediately reflected in the other.