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/*******************************************************************************
* Copyright (c) 2008 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.utility.internal;
import java.util.Iterator;
import org.eclipse.jpt.utility.internal.iterators.EmptyIterator;
/**
* An <code>EmptyIterable</code> is just that.
*/
public final class EmptyIterable<E>
implements Iterable<E>
{
// singleton
@SuppressWarnings("unchecked")
private static final EmptyIterable INSTANCE = new EmptyIterable();
/**
* Return the singleton.
*/
@SuppressWarnings("unchecked")
public static <T> Iterable<T> instance() {
return INSTANCE;
}
/**
* Ensure single instance.
*/
private EmptyIterable() {
super();
}
public Iterator<E> iterator() {
return EmptyIterator.instance();
}
@Override
public String toString() {
return StringTools.buildToStringFor(this);
}
}
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