Using Vectors in Entity Beans

Question

Hello,
Can I use vectors in entity and store them in Tables directly as binary objects.I have tried making that bean but facing problem in retriving data from table using EJB-QL.Here are code snippets:
-------public abstract class CartEntityBean implements EntityBean {
     private EntityContext ctx;
     public abstract String getCartId();
     public abstract Vector getItems();
     public abstract void setCartId(String CartId);
     public abstract void setItems(Vector items);
public String ejbCreate(String cartId,Vector items) throws CreateException {
          setCartId(cartId);
          return cartId;
rest other methods omitted
public interface CartHomeInterface extends EJBHome{
public CartRemoteInterface create (String cartId,Vector items )throws CreateException,RemoteException ;
public CartRemoteInterface findByPrimaryKey(String pk) throws FinderException, RemoteException;
public Collection findmyItems() throws FinderException, RemoteException;
I am using Cloudscape as Database.
Please help weather I can use Complex objects in Entity Beans or Not

Answer 1

this is no good idea to store the cart-items as a java-vector. you should create a entity bean cart and a entity bean cartItem. then create a cmr between the two entity beans.