/*
 * 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.Collections;
import java.util.List;

import org.apache.openjpa.lib.rop.ResultList;
import org.apache.openjpa.persistence.EntityManagerImpl;
import org.apache.openjpa.persistence.OpenJPAEntityManager;
import org.apache.openjpa.persistence.OpenJPAQuery;
import org.apache.openjpa.persistence.PersistenceExceptions;
import org.apache.openjpa.persistence.QueryImpl;

/**
 * A Query that returns SDO DataObjects instead of PersistenceCapable POJOs.
 * 
 * @author Pinaki Poddar
 * @since 0.1.0
 */
@SuppressWarnings("serial")
class SDOQuery extends QueryImpl implements OpenJPAQuery {
    public SDOQuery(EntityManagerImpl em, org.apache.openjpa.kernel.Query query) {
    	super(em, query);
    }
	
    public List getResultList() {
    	OpenJPAEntityManager em = getEntityManager();
    	Object ob = super.getResultList();
        if (ob instanceof List) {
            List ret = (List) ob;
            if (ret instanceof ResultList)
                return new SDODelegatingResultList(
                		(SDOEntityManager)this.getEntityManager(), 
                		(ResultList) ret, 
                		PersistenceExceptions.getRollbackTranslator(em));
            else
                return ret;
        }

        return Collections.singletonList(ob);
    }

}