| /******************************************************************************* |
| * Copyright (c) 2011 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; |
| import org.eclipse.jpt.common.utility.internal.iterators.LateralIteratorWrapper; |
| |
| /** |
| * Wrap an iterable of elements of type <code>E1</code>, converting it into an |
| * iterable of elements of type <code>E2</code>. <em>Assume</em> the wrapped |
| * iterable contains only elements of type <code>E2</code>. The result is a |
| * {@link ClassCastException} if this assumption is false. |
| * |
| * @param <E1> input: the type of elements contained by the wrapped iterable |
| * @param <E2> output: the type of elements returned by the iterable's iterators |
| * |
| * @see LateralIteratorWrapper |
| * @see SubIterableWrapper |
| */ |
| public class LateralIterableWrapper<E1, E2> |
| implements Iterable<E2> |
| { |
| private final Iterable<E1> iterable; |
| |
| |
| public LateralIterableWrapper(Iterable<E1> iterable) { |
| super(); |
| this.iterable = iterable; |
| } |
| |
| public Iterator<E2> iterator() { |
| return new LateralIteratorWrapper<E1, E2>(this.iterable.iterator()); |
| } |
| |
| @Override |
| public String toString() { |
| return StringTools.buildToStringFor(this, this.iterable); |
| } |
| } |