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Hibernate's core ORM functionality

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or .
 */
package org.hibernate.internal.util.collections;

import java.util.Iterator;

/**
 * @author Gavin King
 */
public final class SingletonIterator implements Iterator {
	private T value;
	private boolean hasNext = true;

	public boolean hasNext() {
		return hasNext;
	}

	public T next() {
		if (hasNext) {
			hasNext = false;
			return value;
		}
		else {
			throw new IllegalStateException();
		}
	}

	public void remove() {
		throw new UnsupportedOperationException();
	}

	public SingletonIterator(T value) {
		this.value = value;
	}

}