examples.webservices.complex.statelessSession
Class TraderBean

java.lang.Object
  |
  +--examples.webservices.complex.statelessSession.TraderBean

All Implemented Interfaces:

javax.ejb.EnterpriseBean, java.io.Serializable, javax.ejb.SessionBean

public class TraderBean

extends java.lang.Object

implements javax.ejb.SessionBean

TraderBean is a stateless Session Bean. This bean illustrates:

• No persistence of state between calls to the Session Bean
• Looking up values from the Environment

Author:

Copyright (c) 1999-2002 by BEA Systems, Inc. All Rights Reserved.

Constructor Summary

TraderBean()

Method Summary

TradeResult	buy(java.lang.String stockSymbol, int shares) Buys shares of a stock.
void	ejbActivate() This method is required by the EJB Specification, but is not used by this example.
void	ejbCreate() This method corresponds to the create method in the home interface "TraderHome.java".
void	ejbPassivate() This method is required by the EJB Specification, but is not used by this example.
void	ejbRemove() This method is required by the EJB Specification, but is not used by this example.
TradeResult	sell(java.lang.String stockSymbol, int shares) Sells shares of a stock.
void	setSessionContext(javax.ejb.SessionContext ctx) Sets the session context.

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TraderBean

public TraderBean()

Method Detail

buy

public TradeResult buy(java.lang.String stockSymbol,
                       int shares)

Buys shares of a stock.

Parameters:

stockSymbol - String Stock symbol

shares - int Number of shares to buy

Returns:

TradeResult Trade Result if there is an error while buying the shares

ejbActivate

public void ejbActivate()

This method is required by the EJB Specification, but is not used by this example.

Specified by:

ejbActivate in interface javax.ejb.SessionBean

ejbCreate

public void ejbCreate()
               throws javax.ejb.CreateException

This method corresponds to the create method in the home interface "TraderHome.java". The parameter sets of the two methods are identical. When the client calls TraderHome.create(), the container allocates an instance of the EJBean and calls ejbCreate().

Throws:

javax.ejb.CreateException - if there is a communications or systems failure

See Also:

Trader

ejbPassivate

public void ejbPassivate()

This method is required by the EJB Specification, but is not used by this example.

Specified by:

ejbPassivate in interface javax.ejb.SessionBean

ejbRemove

public void ejbRemove()

This method is required by the EJB Specification, but is not used by this example.

Specified by:

ejbRemove in interface javax.ejb.SessionBean

sell

public TradeResult sell(java.lang.String stockSymbol,
                        int shares)

Sells shares of a stock.

Parameters:

stockSymbol - String Stock symbol

shares - int Number of shares to buy

Returns:

TradeResult Trade Result if there is an error while selling the shares

setSessionContext

public void setSessionContext(javax.ejb.SessionContext ctx)

Sets the session context.

Specified by:

setSessionContext in interface javax.ejb.SessionBean

Parameters:

ctx - SessionContext Context for session