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The basic runtime tools and interfaces for intarsys components.

There is a newer version: 4.11

/*
 * Copyright (c) 2007, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * - Neither the name of intarsys nor the names of its contributors may be used
 *   to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package de.intarsys.tools.collection;

import java.util.Iterator;
import java.util.NoSuchElementException;

/**
 * An iterator over a single object.
 * 
 */
public class SingleObjectIterator implements Iterator {
	private Object singleObject;

	private boolean hasNext = true;

	/**
	 * EnumerationIterator constructor comment.
	 * 
	 * @param singleton
	 * 
	 */
	public SingleObjectIterator(Object singleton) {
		super();
		setSingleObject(singleton);
	}

	private java.lang.Object getSingleObject() {
		return singleObject;
	}

	public boolean hasNext() {
		return hasNext;
	}

	public java.lang.Object next() {
		if (hasNext()) {
			hasNext = false;
			return getSingleObject();
		} else {
			throw new NoSuchElementException();
		}
	}

	public void remove() {
		throw new UnsupportedOperationException(
				"can not remove from singleton iterator");
	}

	private void setSingleObject(java.lang.Object newSingleObject) {
		singleObject = newSingleObject;
	}
}