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/*******************************************************************************
* Copyright (c) 2009 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.ReadOnlyIterator;
/**
* A <code>ReadOnlyIterable</code> wraps another {@link Iterable}
* and returns a read-only {@link Iterator}.
*
* @param <E> the type of elements returned by the iterable's iterator
*
* @see ReadOnlyIterator
* @see ReadOnlyListIterable
*/
public class ReadOnlyIterable<E>
implements Iterable<E>
{
private final Iterable<? extends E> iterable;
/**
* Construct an iterable the returns a read-only iterator on the elements
* in the specified iterable.
*/
public ReadOnlyIterable(Iterable<? extends E> iterable) {
super();
this.iterable = iterable;
}
public Iterator<E> iterator() {
return new ReadOnlyIterator<E>(this.iterable);
}
@Override
public String toString() {
return StringTools.buildToStringFor(this, this.iterable);
}
}
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