SettingDAO.java

/**
 *  C-Nery - A home automation web application for C-Bus.
 *  Copyright (C) 2008,2009,2012  Dave Oxley <dave@daveoxley.co.uk>.
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as
 *  published by the Free Software Foundation, either version 3 of the
 *  License, or (at your option) any later version.
 *
 *  This program 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package com.daveoxley.cnery.dao;

import com.daveoxley.cnery.entities.Setting;
import java.io.Serializable;
import javax.persistence.EntityManager;
import javax.persistence.EntityNotFoundException;
import javax.persistence.NoResultException;
import org.jboss.seam.annotations.AutoCreate;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Name;

/**
 *
 * @author Dave Oxley <dave@daveoxley.co.uk>
 */
@Name("settingDAO")
@AutoCreate
public class SettingDAO implements Serializable {

    @In
    protected EntityManager entityManager;

    public Setting findSettingByName(String settingName) {
        try {
            StringBuilder query = new StringBuilder("select s from Setting s where s.name = :name");
            return (Setting) entityManager
                    .createQuery(query.toString())
                    .setParameter("name", settingName)
                    .getSingleResult();
        } catch (EntityNotFoundException ex) {
        } catch (NoResultException ex) {
        }
        return null;
    }
}