B.2 The EJB Code for Rosa s System

B.2 The EJB Code for Rosa's System

The following code sniplet describes the remote interface of the entity bean called BreakfastOrder:

 import java.rmi.*; import javax.naming.*; import javax.ejb.*; import breakfast.ejb.breakfastorder.*; public interface BreakfastOrder extends EJBObject {     public BreakfastOrderDataObject getBreakfastOrder()                         throws  RemoteException;     public void setBreakfastOrder(BreakfastOrderDataObject update)                         throws  NamingException,                                 FinderException,                                 CreateException,                                 RemoteException;     public float calculatePrice()                         throws RemoteException; } 

The following code snippet shows the implementation of the data class for BreakfastOrder :

 import breakfast.ejb.*; import java.util.*; public class BreakfastOrderDataObject                        extends DataObject implements java.io.Serializable {     private BreakfastOrderKey key;     /**      * Creates a new BreakfastOrderDataObject.      * @param key initialize all fields necessary to uniquely identify      * this object      */     public BreakfastOrderDataObject(BreakfastOrderKey key) {         this.key = key;         this.deliveryAddress = new Address();     }     public int getBreakfastOrderID() {         return key.getBreakfastOrderID();     }     // References to associated single classes:     private CustomerKey customercustomerKey;     /**      * Sets the foreign key CustomerKey of the singular referenced      * Customer      * @param  CustomerKey      */     public void setCustomerCustomer(CustomerKey s) {         this.customercustomerKey = s;     }     /**      * Returns the foreign key CustomerKey of the singular referenced Customer      * @return  CustomerKey      */     public CustomerKey getCustomerCustomer() {         return customercustomerKey;     }     // References to by-value-treated collections of objects:     private breakfast.ejb.breakfastorder.BreakfastDataObjectCollection                                   breakfastbreakfast;     public void addBreakfast(             breakfast.ejb.breakfastorder.BreakfastDataObject added) {         this.breakfastbreakfast.add(added);     }     public void removeBreakfast(             breakfast.ejb.breakfastorder.BreakfastDataObject removed) {         this.breakfastbreakfast.remove(removed);     }     /**      * Returns the internal BreakfastDataObjectCollection of the multiple      * contained Breakfast.      * @return breakfast.ejb.breakfastorder.      *                                   BreakfastDataObjectCollection      */     public breakfast.ejb.breakfastorder.BreakfastDataObjectCollection             getBreakfast() {         if (breakfast == null) {             breakfast =         new breakfast.ejb.breakfastorder.BreakfastDataObjectListImpl();         }         return breakfast;     }     // No associated collections of objects by reference     // Attributes:     private java.util.Date orderDate;     /**      * Returns attribute orderDate.      * @return java.util.Date      */     public java.util.Date getOrderDate() {       return  orderDate;     }     public void setOrderDate(java.util.Date value) {         this.orderDate = value;     }     private Address deliveryAddress;     /**      * Returns a copy of attribute deliveryAddress.      * Since deliveryAddress is a StructType, we do not want that the      * object returned by getDeliveryAddress() can implicitly change the      * state of the owner BreakfastOrder.      * Therefore a copy is returned.      * @return Address      */     public Address getDeliveryAddress() {       return deliveryAddress != null ? deliveryAddress.deepCopy() : null;     }     public void setDeliveryAddress(Address value) {         this.deliveryAddress = value;     }     private java.util.Date deliveryDate;     /**      * Returns attribute deliveryDate.      * @return java.util.Date      */     public java.util.Date getDeliveryDate() {       return  deliveryDate;     }     public void setDeliveryDate(java.util.Date value) {         this.deliveryDate = value;     }     private java.util.Date deliveryTime;     /**      * Returns attribute deliveryTime.      * @return java.util.Date      */     public java.util.Date getDeliveryTime() {       return  deliveryTime;     }     public void setDeliveryTime(java.util.Date value) {         this.deliveryTime = value;     }     private floatdiscount;     /**      * Returns attribute discount.      * @return float      */     public float getDiscount() {       return  discount;     }     public void setDiscount(float value) {         this.discount = value;     } }