| /******************************************************************************* |
| * Copyright (c) 2010 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.common.utility.internal.iterables; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.jpt.common.utility.internal.StringTools; |
| |
| /** |
| * Wrap an iterable of elements of any sub-type of <code>E</code>, converting it into an |
| * iterable of elements of type <code>E</code>. This shouldn't be a problem since there |
| * is no way to add invalid elements to the iterable. |
| * |
| * @param <E> the type of elements returned by the iterable's iterator |
| * |
| * @see org.eclipse.jpt.common.utility.internal.iterators.SuperIteratorWrapper |
| */ |
| public class SuperIterableWrapper<E> |
| implements Iterable<E> |
| { |
| private final Iterable<E> iterable; |
| |
| |
| @SuppressWarnings("unchecked") |
| public SuperIterableWrapper(Iterable<? extends E> iterable) { |
| super(); |
| // this should be a safe cast - the iterator will only ever |
| // return E (or a sub-type) from #next() |
| this.iterable = (Iterable<E>) iterable; |
| } |
| |
| public Iterator<E> iterator() { |
| return this.iterable.iterator(); |
| } |
| |
| @Override |
| public String toString() { |
| return StringTools.buildToStringFor(this, this.iterable); |
| } |
| |
| } |