org.apache.jena.atlas.lib.persistent

Class PSet<E>

java.lang.Object

org.apache.jena.atlas.lib.persistent.PSet<E>

Type Parameters:

E - the type of element in this set

All Implemented Interfaces:

PersistentSet<E>

public class PSet<E>
extends Object
implements PersistentSet<E>

A implementation of PersistentSet using Set.

Method Summary

Modifier and Type	Method and Description
Set<E>	asSet() An immutable view of this as a java.util.Set.
boolean	contains(E e)
static <E> PSet<E>	empty()
PersistentSet<E>	minus(E e)
PersistentSet<E>	plus(E e)
Stream<E>	stream()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

empty

public static <E> PSet<E> empty()

Specified by:

empty in interface PersistentSet<E>

Returns:

an empty set

plus

public PersistentSet<E> plus(E e)

Specified by:

plus in interface PersistentSet<E>

Parameters:

e - an element

Returns:

a new set with the elements of this set and e

minus

public PersistentSet<E> minus(E e)

Specified by:

minus in interface PersistentSet<E>

Parameters:

e - an element

Returns:

a new set with the elements of this set except e

contains

public boolean contains(E e)

Specified by:

contains in interface PersistentSet<E>

Parameters:

e - an element

Returns:

whether this set contains e

stream

public Stream<E> stream()

Specified by:

stream in interface PersistentSet<E>

Returns:

a Stream of the elements in this set

asSet

public Set<E> asSet()

Description copied from interface: PersistentSet

An immutable view of this as a java.util.Set.

Specified by:

asSet in interface PersistentSet<E>