br.com.arsmachina.authentication.dao.hibernate.PermissionDAOImpl.java Source code

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Here is the source code for br.com.arsmachina.authentication.dao.hibernate.PermissionDAOImpl.java

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// 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.PermissionDAO;
import br.com.arsmachina.authentication.entity.Permission;
import br.com.arsmachina.dao.SortCriterion;
import br.com.arsmachina.dao.hibernate.GenericDAOImpl;

/**
 * {@link PermissionDAO} implementation using Hibernate
 * 
 * @author Thiago H. de Paula Figueiredo
 */
public class PermissionDAOImpl extends GenericDAOImpl<Permission, Integer> implements PermissionDAO {

    /**
     * Single constructor of this class.
     * 
     * @param sessionFactory a {@link SessionFactory}. It cannot be null.
     */
    public PermissionDAOImpl(SessionFactory sessionFactory) {
        super(sessionFactory);
    }

    /**
     * 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;
    }

    /**
     * @see br.com.arsmachina.authentication.dao.PermissionDAO#findByName(java.lang.String)
     */
    public Permission findByName(String name) {

        final Criteria criteria = createCriteria();
        criteria.add(Restrictions.eq("name", name));

        return (Permission) criteria.uniqueResult();

    }

}