How to write two OneToMany relationships to one table in ActiveObjects

How do I write two OneToMany relationships to one table in ActiveObjects? Why is this test case failing?

simple message object.

import net.java.ao.Entity;

public interface Message extends Entity{
    public void setSender(Communicator sender);
    public void setAcceptor(Communicator acceptor);
}

      

        
        
        
      

    

simple communicator (human or server).

import net.java.ao.Entity;
import net.java.ao.OneToMany;

public interface Communicator extends Entity {
    @OneToMany
    public Message[] getSendMessages();

    @OneToMany
    public Message[] getAcceptMessages();

}

      

        
        
        
      

    

...

1.connect to mysql localhost.

2. Create table schemas.

3. Assemble the two sender and acceptor communicators.

4.Collect 10 messages as setSender (sender) and setAcceptor (acceptor).

5. Check the number of messages that the sender has received. it should be zero.

6.but junit says it is 10 but not zero.

import java.sql.SQLException;

import junit.framework.TestCase;
import net.java.ao.EntityManager;

public class AOTest2 extends TestCase{
    public void test() {
        String db_host = "localhost";
        String db_database = "test";
        String db_login = "root";
        String db_password = "";

        EntityManager m = new EntityManager("jdbc:mysql://" + db_host + "/" + db_database, db_login, db_password);

        try {
            m.migrate(Communicator.class, Message.class);
        } catch (SQLException e1) {
            e1.printStackTrace();
        }

        try {
            Communicator sender = m.create(Communicator.class);
            Communicator acceptor = m.create(Communicator.class);
            sender.save();
            acceptor.save();
            for (int i = 0; i < 10; i++) {
                Message mes = m.create(Message.class);
                mes.setAcceptor(acceptor);
                mes.setSender(sender);
                mes.save();
            }

            assertEquals(true, sender.getAcceptMessages().length == 0);
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

      

        
        
        
      

    

Thank.