contrib/jcr-server/webdav/src/java/org/apache/jackrabbit/webdav/DavResourceIteratorImpl.java

/*
 * Copyright 2005 The Apache Software Foundation.
 *
 * 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 org.apache.jackrabbit.webdav;

import org.apache.log4j.Logger;

import java.util.Iterator;
import java.util.List;

/**
 * <code>DavResourceIteratorImpl</code> implementation of the {@link DavResourceIterator}
 * interface.<br>
 * NOTE: {@link #remove()} is not implemented.
 */
public class DavResourceIteratorImpl implements DavResourceIterator {

    private static Logger log = Logger.getLogger(DavResourceIteratorImpl.class);

    private Iterator it;
    private int size;

    /**
     * Create a new DavResourceIterator from the specified list.
     * @param list
     */
    public DavResourceIteratorImpl(List list) {
        it = list.iterator();
        size = list.size();
    }

    /**
     * @see DavResourceIterator#hasNext()
     */
    public boolean hasNext() {
        return it.hasNext();
    }

    /**
     * @see DavResourceIterator#next()
     */
    public Object next() {
        return it.next();
    }

    /**
     * @see DavResourceIterator#nextResource()
     */
    public DavResource nextResource() {
        return (DavResource) next();
    }

    /**
     * Returns the size of the initial list.
     *
     * @see DavResourceIterator#size()
     */
    public int size() {
        return size;
    }

    /**
     * @see DavResourceIterator#remove()
     */
    public void remove() {
        throw new UnsupportedOperationException("Remove not allowed with DavResourceIteratorImpl");
    }
}