Having trouble with persist

Question

I have created a simple application where a user can order items and then i'm saving the order and all the items (details of order) to the dataBase.
i'm using jdk1.5 with jboss and mySql (also hibernate).
i'm having troubles with saving the details of the order, the relevant code is-
order entity -
@Entity
public class Orders implements Serializable
    @Id @GeneratedValue
    private long orderId;                    //generated in db
    private String name;
   public Orders(String userName)
        this.userName=userName;
    public long getOrderId() { return orderId; }
    //getters and setters...
detailsOfOrder entity -
@Entity
public class DetailsOfOrders implements Serializable
@Id
private long orderId;
@Id
private int productId;
private int quantity;
public DetailsOfOrders(long orderId,int productId)
     this.productId=productId;
     this.orderId=orderId;
public long getOrderId() { return orderId; }
public int getProductId() { return productId; }
//getters and setters...
}session bean (order method) -
        List<SCItem> listOfItems;                         //SCItem is a regular class
        Orders order=new Orders(userName);
        manager.persist(order);
        long orderId=order.getOrderId();   //get order id after persisting
        for(SCItem item : listOfItems)    //save details of order
         DetailsOfOrders detail=new DetailsOfOrders(orderId,"1");
         manager.persist(detail);                                                   //exception occures here
       }when i'm trying to make an order i'm getting the exception-
javax.transaction.RollbackException: [com.arjuna.ats.internal.jta.transaction.arjunacore.commitwhenaborted] [com.arjuna.ats.internal.jta.transaction.arjunacore.commitwhenaborted] Can't commit because the transaction is in aborted state
what is the problem?
thanks in advanced.

Answer 1

yes, the entity classes have no-arg constructors (i just tried to write it shortly here...)
about the other thing , well i'm sorry , the right code is-
session bean (order method) -
   List<SCItem> listOfItems;                         //SCItem is a regular class
   Orders order=new Orders(userName);
   manager.persist(order);
   long orderId=order.getOrderId();   //get order id after persisting
   for(SCItem item : listOfItems)    //save details of order
     DetailsOfOrders detail=new DetailsOfOrders(orderId,item.getProductId());
     manager.persist(detail);                                                   //exception occures here
     }what else could it be?