| /******************************************************************************* |
| * Copyright (c) 2010, 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.List; |
| import java.util.ListIterator; |
| |
| import org.eclipse.jpt.common.utility.internal.StringTools; |
| import org.eclipse.jpt.common.utility.internal.iterators.SuperListIteratorWrapper; |
| |
| /** |
| * Wrap a list iterable of elements of any sub-type of <code>E</code>, |
| * converting it into a <em>non-writable</em> list iterable of elements |
| * of type <code>E</code>. |
| * This shouldn't be a problem since the resulting list iterable's list |
| * iterator disables the methods that would put invalid elements in the list |
| * iterator's backing list (i.e. {@link SuperListIteratorWrapper#set(Object)} |
| * and {@link SuperListIteratorWrapper#add(Object)}). |
| * |
| * @param <E> the type of elements returned by the iterable's iterators |
| * |
| * @see SuperListIteratorWrapper |
| */ |
| public class SuperListIterableWrapper<E> |
| implements ListIterable<E> |
| { |
| private final ListIterable<? extends E> iterable; |
| |
| |
| public <T extends E> SuperListIterableWrapper(List<T> list) { |
| this(new ListListIterable<T>(list)); |
| } |
| |
| public SuperListIterableWrapper(ListIterable<? extends E> iterable) { |
| super(); |
| this.iterable = iterable; |
| } |
| |
| public ListIterator<E> iterator() { |
| return new SuperListIteratorWrapper<E>(this.iterable.iterator()); |
| } |
| |
| @Override |
| public String toString() { |
| return StringTools.buildToStringFor(this, this.iterable); |
| } |
| } |