The Trading Session Bean
The Trading session bean performs most of the back-end work for storing buy and put orders and registering completed trades. Listing 21.3 shows the remote interface for the bean.
Listing 21.3. Source Code for Trading.java
package jwsunleashed.trading.ejb; import java.rmi.*; import javax.ejb.*; public interface Trading extends EJBObject { public TradeResult put(String stock, int shares, int price) throws RemoteException; public TradeResult buy(String stock, int shares, int price) throws RemoteException; public TradeResult retractPut(int putID) throws RemoteException; public TradeResult retractBuy(int buyID) throws RemoteException; public TradeResult getPutStatus(int putID) throws RemoteException; public TradeResult getBuyStatus(int ... |
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