public JACCConfiguration(String contextId) throws HibernateException 
{
	     
		try {
			policyConfiguration = PolicyConfigurationFactory
					.getPolicyConfigurationFactory()
					.getPolicyConfiguration( contextId, false );
		}
		catch (ClassNotFoundException cnfe) {
			throw new HibernateException( "JACC provider class not found", cnfe );
		}
		catch (PolicyContextException pce) {
			throw new HibernateException( "policy context exception occurred", pce );
		}
}

 public  void addPermission(String role,
    String entityName,
    String action) 
{
		if ( action.equals( "*" ) ) {
			action = "insert,read,update,delete";
		}
		StringTokenizer tok = new StringTokenizer( action, "," );
		while ( tok.hasMoreTokens() ) {
			String methodName = tok.nextToken().trim();
			EJBMethodPermission permission = new EJBMethodPermission( 
					entityName, 
					methodName, 
					null, // interfaces
					null // arguments
				);
			if ( log.isDebugEnabled() ) {
				log.debug( "adding permission to role " + role + ": " + permission );
			}
			try {
				policyConfiguration.addToRole( role, permission );
			}
			catch (PolicyContextException pce) {
				throw new HibernateException( "policy context exception occurred", pce );
			}
		}
}