org.eclipse.persistence.jpa.jpql.tools.utility.iterable

Class EmptyIterable<E>

java.lang.Object

org.eclipse.persistence.jpa.jpql.tools.utility.iterable.EmptyIterable<E>

Type Parameters:

E - the type of elements returned by the iterable's iterator

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable<E>

public final class EmptyIterable<E>
extends java.lang.Object
implements java.lang.Iterable<E>, java.io.Serializable

An EmptyIterable is just that. Maybe just a touch better-performing than Collections.EMPTY_SET since we don't create a new Iterator every time iterator() is called. (Not sure why they do that....)

Version:

2.5

See Also:

EmptyIterator, EmptyListIterable, Serialized Form

Since:

2.5

Method Summary

Methods

Modifier and Type	Method and Description
static <T> java.lang.Iterable<T>	instance() Return the singleton instance of this Iterable.
java.util.Iterator<E>	iterator()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

instance

public static <T> java.lang.Iterable<T> instance()

Return the singleton instance of this Iterable.

Returns:

The singleton instance

iterator

public java.util.Iterator<E> iterator()

Specified by:

iterator in interface java.lang.Iterable<E>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object