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/**
 * Copyright (C) 2011 Brian Ferris 
 *
 * 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 org.onebusaway.gtfs.services;

import org.hibernate.SessionFactory;
import org.onebusaway.gtfs.impl.HibernateGtfsRelationalDaoImpl;
import org.onebusaway.gtfs.impl.calendar.CalendarServiceDataFactoryImpl;
import org.onebusaway.gtfs.impl.calendar.CalendarServiceImpl;
import org.onebusaway.gtfs.services.calendar.CalendarService;

/**
 * Convenience factory methods for constructing Hibernate-based implementations
 * of various GTFS service interfaces.
 * 
 * @author bdferris
 */
public class HibernateGtfsFactory {

  private SessionFactory _sessionFactory;

  private GtfsMutableRelationalDao _dao;

  private CalendarService _calendarService;

  public HibernateGtfsFactory() {

  }

  public HibernateGtfsFactory(SessionFactory sessionFactory) {
    setSessionFactory(sessionFactory);
  }

  public void setSessionFactory(SessionFactory sessionFactory) {
    _sessionFactory = sessionFactory;
  }

  public GtfsMutableRelationalDao getDao() {
    if (_dao == null)
      _dao = new HibernateGtfsRelationalDaoImpl(_sessionFactory);
    return _dao;
  }

  public CalendarService getCalendarService() {
    if (_calendarService == null)
      _calendarService = new CalendarServiceImpl(
          new CalendarServiceDataFactoryImpl(getDao()));
    return _calendarService;
  }
}