// Copyright 2008 Thiago H. de Paula Figueiredo

 //

 // 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.

 package br.com.arsmachina.authentication.dao.hibernate;

 import org.hibernate.Criteria;

 import org.hibernate.SessionFactory;

 import org.hibernate.criterion.Restrictions;

 import br.com.arsmachina.authentication.dao.PermissionGroupDAO;

 import br.com.arsmachina.authentication.entity.PermissionGroup;

 import br.com.arsmachina.dao.SortCriterion;

 import br.com.arsmachina.dao.hibernate.GenericDAOImpl;

 /**

  * {@link PermissionGroupDAO} implementation using Hibernate.

  * 

  * @author Thiago H. de Paula Figueiredo

  */

 public class PermissionGroupDAOImpl extends GenericDAOImpl<PermissionGroup, Integer> implements

                 PermissionGroupDAO {

         /**

          * Single constructor of this class.

          * 

          * @param sessionFactory a {@link SessionFactory}. It cannot be null.

          */

         public PermissionGroupDAOImpl(SessionFactory sessionFactory) {

                 super(sessionFactory);

         }

         /**

          * @see br.com.arsmachina.authentication.dao.PermissionGroupDAO#findByName(java.lang.String)

          */

         public PermissionGroup findByName(String name) {

                 final Criteria criteria = createCriteria();

                 criteria.add(Restrictions.eq("name", name));

                 return (PermissionGroup) criteria.uniqueResult();

         }

         /**

          * Returns {@link Constants#ASCENDING_NAME_SORT_CRITERIA}.

          * 

          * @see br.com.arsmachina.dao.hibernate.GenericDAOImpl#getDefaultSortCriteria()

          */

         @Override

         public SortCriterion[] getDefaultSortCriteria() {

                 return Constants.ASCENDING_NAME_SORT_CRITERIA;

         }

 }