001/**
002 * Copyright 2014 DuraSpace, Inc.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.fcrepo.kernel.utils.iterators;
017
018import java.util.Iterator;
019
020import javax.jcr.version.Version;
021
022import com.google.common.collect.ForwardingIterator;
023
024/**
025 * Type-aware iterator to wrap the JCR NodeIterator.
026 *
027 * @author ajs6f
028 * @since Apr 20, 2013
029 */
030public class VersionIterator extends ForwardingIterator<Version> implements
031        Iterable<Version> {
032
033    private javax.jcr.version.VersionIterator i;
034
035    /**
036     * Wrap the NodeIterator with our generic version.
037     *
038     * @param i
039     */
040    public VersionIterator(final javax.jcr.version.VersionIterator i) {
041        this.i = i;
042    }
043
044    @Override
045    public Iterator<Version> iterator() {
046        return this;
047    }
048
049    @SuppressWarnings("unchecked")
050    @Override
051    protected Iterator<Version> delegate() {
052        return i;
053    }
054
055}