/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.openjpa.sdo;

import java.util.ListIterator;

import org.apache.openjpa.kernel.DelegatingResultList;
import org.apache.openjpa.lib.rop.ResultList;
import org.apache.openjpa.util.RuntimeExceptionTranslator;

/**
 * A ResultList that converts the persistent Java Objects to SDO DataObjects
 * before returning to the caller.
 * 
 * @author Pinaki Poddar
 * @since 0.1.0
 */
@SuppressWarnings("serial")
class SDODelegatingResultList extends DelegatingResultList {
	private final SDOEntityManager em;
	public SDODelegatingResultList(SDOEntityManager em, ResultList list, 
			RuntimeExceptionTranslator trans) {
		super(list, trans);
		this.em = em;
	}
	
    public ListIterator listIterator() {
        try {
            return new SDOListIterator(getDelegate().listIterator());
        } catch (RuntimeException re) {
            throw translate(re);
        }
    }
    
    
    public class SDOListIterator extends DelegatingListIterator {
    	
    	public SDOListIterator(ListIterator it) {
			super(it);
		}
    	
    	public Object next() {
    		Object o = super.next();
    		SDOEntityManager em = SDODelegatingResultList.this.em;
    		return em.createDataObject(o);
    	}
    }

}