ejbCreate method of a containing entity bean (LineItem).
- By Grant Holland
- March 24, 2001
Architect's Corner
Entity bean relationships in EJB 1.1
Part 1: The basic technique
Grant Holland
Listing 2. ejbCreate method of a containing entity bean (LineItem).
public LineItemPK ejbCreate(
int lineItemID,
int orderID,
int quantity,
Product product )
throws CreateException,RemoteException
{
LineItemPK pk;
try
{
// capture all 3 field types
this.lineItemID = lineItemID; // persistent data
this.orderID = orderID; // persistent data
this.quantity = quantity; // persistent data
this.product = product; // related EJB object
this.productName = // related key
((ProductPK)product.getPrimaryKey()).productName;
/*
// persist persistent data
< write “lineItemID” to persistent store >
< write “orderID” to persistent store >
< write “quantity” to persistent store >
// persist related key
< write “productName” to persistent store >
*/
// create and initialize Primary Key object
LineItemPK pk = new LineItemPK(); // make PK
pk.lineItemID = lineItemID; // capture identity field
pk. orderID = orderID; // capture identity field
}
catch(Exception e)
{
throw new CreateException(e.getMessage());
}
return pk;
}