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/*******************************************************************************
* 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.Iterator;
import org.eclipse.jpt.common.utility.internal.StringTools;
import org.eclipse.jpt.common.utility.internal.iterators.SubIteratorWrapper;
/**
* 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>.
*
* @param <E1> input: the type of elements contained by the wrapped iterable
* @param <E2> output: the type of elements returned by the iterable's iterator
*
* @see org.eclipse.jpt.common.utility.internal.iterators.SubIteratorWrapper
*/
public class SubIterableWrapper<E1, E2 extends E1>
implements Iterable<E2>
{
private final Iterable<E1> iterable;
public SubIterableWrapper(Iterable<E1> iterable) {
super();
this.iterable = iterable;
}
public Iterator<E2> iterator() {
return new SubIteratorWrapper<E1, E2>(this.iterable.iterator());
}
@Override
public String toString() {
return StringTools.buildToStringFor(this, this.iterable);
}
}
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