/**
* Copyright 2013 Oak Ridge National Laboratory
* Author: James Horey <horeyjl@ornl.gov>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
package gov.ornl.keva.core;
/**
* Java libs.
**/
import java.util.Iterator;
/**
* Used when we need an iterator, but there no items to iterate.
*
* @author James Horey
**/
public class EmptyIterator<E> implements Iterator<E> {
/**
* Indicate whether we have another element.
*
* @return True if there is another value. False otherwise.
*/
@Override public boolean hasNext() {
return false;
}
/**
* Fetch the next element.
*
* @return Next value in the iterator.
*/
@Override public E next() {
return null;
}
/**
* Remove current element (not implemented).
*/
@Override public void remove() {
// Do not implement.
}
}