/*******************************************************************************
 * ============LICENSE_START====================================================
 * * org.onap.aaf
 * * ===========================================================================
 * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
 * * ===========================================================================
 * * 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.
 * * ============LICENSE_END====================================================
 * *
 * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 * *
 ******************************************************************************/
package org.onap.aaf.dao;

import java.util.List;

import org.onap.aaf.authz.layer.Result;

import org.onap.aaf.inno.env.Trans;

/**
 * DataAccessObject - ReadOnly
 * 
 * It is useful to have a ReadOnly part of the interface for CachedDAO
 * 
 * Normal DAOs will implement full DAO
 * 
 *
 * @param <DATA>
 */
public interface DAO_RO<TRANS extends Trans,DATA> {
	/**
	 * Get a List of Data given Key of Object Array
	 * @param objs
	 * @return
	 * @throws DAOException
	 */
	public Result<List<DATA>> read(TRANS trans, Object ... key);

	/**
	 * Get a List of Data given Key of DATA Object
	 * @param trans
	 * @param key
	 * @return
	 * @throws DAOException
	 */
	public Result<List<DATA>> read(TRANS trans, DATA key);

	/**
	 * close DAO
	 */
	public void close(TRANS trans);

	/**
	 * Return name of referenced Data
	 * @return
	 */
	public String table();


}