org.apache.river.concurrent

Class ReferenceSet<T>

java.lang.Object

java.util.AbstractCollection<T>

org.apache.river.concurrent.ReferenceCollection<T>

org.apache.river.concurrent.ReferenceSet<T>

All Implemented Interfaces:

Serializable, Iterable<T>, Collection<T>, Set<T>

Direct Known Subclasses:

ReferenceSortedSet

class ReferenceSet<T>
extends ReferenceCollection<T>
implements Set<T>

A Referenced Set.

Author:

Peter Firmstone.

See Also:

ReferenceCollection

Field Summary

Fields

Modifier and Type	Field and Description
private static long	serialVersionUID

Constructor Summary

Constructors

Constructor and Description
ReferenceSet(Set<Referrer<T>> col, Ref type, boolean gcThreads, long gcCycle)
ReferenceSet(Set<Referrer<T>> col, ReferenceQueuingFactory<T,Referrer<T>> rqf, Ref type)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o) Because equals and hashCode are not defined for collections, we cannot guarantee consistent behaviour by implementing equals and hashCode.
int	hashCode()
private void	readObject(ObjectInputStream stream)

Methods inherited from class org.apache.river.concurrent.ReferenceCollection

add, addAll, clear, contains, containsAll, getRef, getRQF, isEmpty, iterator, processQueue, remove, size, toString, wrapObj, writeReplace

Methods inherited from class java.util.AbstractCollection

removeAll, retainAll, toArray, toArray

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

add, addAll, clear, contains, containsAll, isEmpty, iterator, remove, removeAll, retainAll, size, spliterator, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

ReferenceSet

ReferenceSet(Set<Referrer<T>> col,
             Ref type,
             boolean gcThreads,
             long gcCycle)

ReferenceSet

ReferenceSet(Set<Referrer<T>> col,
             ReferenceQueuingFactory<T,Referrer<T>> rqf,
             Ref type)

Method Detail

readObject

private void readObject(ObjectInputStream stream)
                 throws InvalidObjectException

Throws:

InvalidObjectException

equals

public boolean equals(Object o)

Description copied from class: ReferenceCollection

Because equals and hashCode are not defined for collections, we cannot guarantee consistent behaviour by implementing equals and hashCode. A collection could be a list, set, queue or deque. So a List != Queue and a Set != list. therefore equals for collections is not defined. However since two collections may both also be Lists, while abstracted from the client two lists may still be equal.

Specified by:

equals in interface Collection<T>

Specified by:

equals in interface Set<T>

Overrides:

equals in class ReferenceCollection<T>

See Also:

Collection.equals(java.lang.Object)

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<T>

Specified by:

hashCode in interface Set<T>

Overrides:

hashCode in class ReferenceCollection<T>