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

 /*

  * 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/>.

  */

 import org.jtheque.core.utils.CoreUtils;

 import java.util.ArrayList;

 import java.util.Collection;

 /**

  * A provider for dao. This class give access to all DAOs or to specific dao with different

  * parameters of search.

  *

  * @author Baptiste Wicht

  */

 public final class DataContainerProvider {

     private final Collection<DataContainer<? extends Entity>> containers = new ArrayList<DataContainer<? extends Entity>>(10);

     private static final DataContainerProvider INSTANCE = new DataContainerProvider();

     /**

      * Add a container to manage.

      *

      * @param container The container to add.

      */

     public void addContainer(DataContainer<? extends Entity> container) {

         assert container != null : "Container can't be null";

                 CoreUtils.getLogger(getClass()).debug("Add container {} for datatype {}", container, container.getDataType());

         containers.add(container);

     }

     /**

      * Remove a container.

      *

      * @param container The container to remove.

      */

     public void removeContainer(DataContainer<? extends Entity> container) {

         containers.remove(container);

     }

     /**

      * Return the unique instance of the DaoProvider.

      *

      * @return The unique instance of the class.

      */

     public static DataContainerProvider getInstance() {

         return INSTANCE;

     }

     /**

      * Return all the DAOs.

      *

      * @return A List containing all the DAO.

      */

     public Iterable<DataContainer<? extends Entity>> getAllContainers() {

         return containers;

     }

     /**

      * Return the DAO for a specific data type.

      *

      * @param dataType The data type for which we want the DAO.

      * @return The dao or <code>null</code> if we don't find one.

      */

     public DataContainer<? extends Entity> getContainerForDataType(String dataType) {

         DataContainer<? extends Entity> container = null;

         for (DataContainer<? extends Entity> d : containers) {

             if (dataType.equals(d.getDataType())) {

                 container = d;

                 break;

             }

         }

                 CoreUtils.getLogger(getClass()).debug("Get container {} : return {}", dataType, container );

         return container;

     }

 }