import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.Session;

import org.springframework.dao.DataAccessException;
import org.springframework.orm.hibernate3.HibernateTemplate;

/**
 * Based on Hibernate Synchronizer
 * For more information or documentation, visit The Hibernate Synchronizer page
 * at http://www.binamics.com/hibernatesync or contact Joe Hudson at joe@binamics.com.
 * 
 * @author Joe Hudson
 * @author Todd McGrath mcgrath@supergloo.com
 */
public abstract class SpringHibernate3BaseRootDAO extends HibernateTemplate {
 
	/**
	 * Return the name of the configuration file to be used with this DAO or null if default
	 */
	public String getConfigurationFileName () {
		return null;
	}

	/**
	 * Return the specific Object class that will be used for class-specific
	 * implementation of this DAO.
	 * @return the reference Class
	 */
	protected abstract Class getReferenceClass();

	/**
	 * Return a Criteria object that relates to the DAO's table
	 */
	 protected Criteria createCriteria (Session s) throws DataAccessException {
	 	return s.createCriteria(getReferenceClass());
	 }

	/**
	 * Return a Criteria object that relates to the DAO's table
	 */
	 public Criteria createCriteria () throws HibernateException {
        Session s = getSessionFactory().openSession();
        return s.createCriteria(getReferenceClass());
	 }	 

	/**
	 * Return the property of the class you would like to use for default ordering
	 * @return the property name
	 */
	public String getDefaultOrderProperty () {
		return null;
	}


}