package org.jtheque.core.managers.persistence.able;

 import java.util.Collection;

 /*

  * This file is part of JTheque.

  *

  * JTheque is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License.

  *

  * JTheque is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with JTheque.  If not, see <http://www.gnu.org/licenses/>.

  */

 /**

  * A data container. It seems a class who can give access to a list of Entity.

  *

  * @author Baptiste Wicht

  * @param <T> The class of data this container can provide.

  */

 public interface DataContainer<T extends Entity> {

     /**

      * Return the datas of the container.

      *

      * @return A List containing all the datas of the container.

      */

     Collection<T> getDatas();

     /**

      * Clear all the datas.

      */

     void clearAll();

     /**

      * Add a data listener to the container.

      *

      * @param listener The listener to add.

      */

     void addDataListener(DataListener listener);

     /**

      * Return the data type.

      *

      * @return The data type.

      */

     String getDataType();

 }