/*
 * $Id: EinsteinBusiness.java.html,v 1.1 2002/09/22 22:32:41 o_rossmueller Exp $
 * $Source: /cvsroot/junitee/JUnitEE/doc/tutorial/org/junitee/ejb/einstein/EinsteinBusiness.java.html,v $
 */

package org.junitee.ejb.einstein;

import java.rmi.RemoteException;

import org.junitee.ejb.einstein.BadNumberException;

/**
 * EinsteinBusiness defines the business methods of the Einstein bean
 */
public interface EinsteinBusiness
{
    /**
     * Adds two decimal numbers (in string form) and returns the result as a String.
     *
     * @throws org.junitee.ejb.einstein.BadNumberException if a parameter couldn't be converted to a number.
     *         This is used instead of NumberFormatException because NFE is a
     *         RuntimeException and triggers a RemoteException (rollback) in some
     *         containers.
     */
    public String addTwoNumbers(String first, String second) throws BadNumberException, RemoteException;

    /**
     * Calculate e = mc2
     * @throws java.rmi.RemoteException
     */
    public double emc2(double m, double c) throws RemoteException;

}