EnumerationWrapper.java

/**
 *
 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 **/
package lucee.cli.util;

import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

/**
 * class to make a enumaration from a ser, map or iterator
 */
public final class EnumerationWrapper<T> implements Enumeration<T> {

	private Iterator<T> it;

	/**
	 * @param map Constructor with a Map
	 */
	public EnumerationWrapper(final Map<T, ?> map) {
		this(map.keySet().iterator());
	}

	/**
	 * @param set Constructor with a Set
	 */
	public EnumerationWrapper(final Set<T> set) {
		this(set.iterator());
	}

	/**
	 * @param it Constructor with a iterator
	 */
	public EnumerationWrapper(final Iterator<T> it) {
		this.it = it;
	}

	/**
	 * @see java.util.Enumeration#hasMoreElements()
	 */
	@Override
	public boolean hasMoreElements() {
		return it.hasNext();
	}

	/**
	 * @see java.util.Enumeration#nextElement()
	 */
	@Override
	public T nextElement() {
		return it.next();
	}

}