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Class examples.cluster.ejb.account.AccountBean

java.lang.Object
   |
   +----examples.cluster.ejb.account.AccountBean

public class AccountBean
extends Object
implements EntityBean

AccountBean is an EntityBean. This EJBean illustrates:

Container-managed JDBC persistence and transactions; the code in this file never directly accesses the data storage.
Application-defined exceptions.

Author:: Copyright (c) 1999 by BEA WebXpress, Inc. All Rights Reserved.

accountId
balance

AccountBean()

balance(): Returns current balance.
deposit(double): Adds amount to balance.
ejbActivate(): This method is required by the EJB Specification, but is not used by this example.
ejbCreate(String, double): This method corresponds to the create method in the home interface "AccountHome.java".
ejbLoad(): This method is required by the EJB Specification, but is not used by this example.
ejbPassivate(): This method is required by the EJB Specification, but is not used by this example.
ejbPostCreate(String, double): This method is required by the EJB Specification, but is not used by this example.
ejbRemove(): This method is required by the EJB Specification, but is not used by this example.
ejbStore(): This method is required by the EJB Specification, but is not used by this example.
id(): Returns the Primary Key identifying this EJBean.
setEntityContext(EntityContext): Sets the EntityContext and the server name for the EJBean.
unsetEntityContext(): Unsets the EntityContext for the EJBean.
withdraw(double): Subtracts amount from balance.

accountId

 public String accountId

balance

 public double balance

AccountBean

 public AccountBean()

 public String id()

Returns the Primary Key identifying this EJBean.

Returns:: String Identification

ejbActivate

 public void ejbActivate() throws RemoteException

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

Throws: RemoteException: if there is a communications or systems failure

ejbPassivate

 public void ejbPassivate() throws RemoteException

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

Throws: RemoteException: if there is a communications or systems failure

setEntityContext

 public void setEntityContext(EntityContext ctx) throws RemoteException

Sets the EntityContext and the server name for the EJBean.

Parameters:: ctx - EntityContext
Throws: RemoteException: if there is a communications or systems failure

unsetEntityContext

 public void unsetEntityContext() throws RemoteException

Unsets the EntityContext for the EJBean.

Throws: RemoteException: if there is a communications or systems failure

ejbLoad

 public void ejbLoad() throws RemoteException

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

Throws: RemoteException: if there is a communications or systems failure

ejbStore

 public void ejbStore() throws RemoteException

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

Throws: RemoteException: if there is a communications or systems failure

ejbRemove

 public void ejbRemove() throws RemoteException

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

Throws: RemoteException: if there is a communications or systems failure

ejbCreate

 public void ejbCreate(String accountId,
                       double initialBalance)

This method corresponds to the create method in the home interface "AccountHome.java". The parameter sets of the two methods are identical. When the client calls AccountHome.create(), the container (which in WebLogic EJB is also the home) allocates an instance of this EJBean and calls AccountBean.ejbCreate().

For container-managed persistence, ejbCreate() returns a void, unlike the case of bean-managed persistence, where it returns a primary key.

Parameters:: accountId - String Account ID; initialBalance - double Initial Balance

ejbPostCreate

 public void ejbPostCreate(String accountId,
                           double initialBalance)

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

Parameters:: accountId - String Account ID; initialBalance - double Initial Balance

balance

 public AccountResult balance()

Returns current balance.

Returns:: AccountResult

deposit

 public AccountResult deposit(double amount)

Adds amount to balance.

Parameters:: amount - double Amount
Returns:: AccountResult

withdraw

 public AccountResult withdraw(double amount) throws AccountException

Subtracts amount from balance.

Parameters:: amount - double Amount
Returns:: AccountResult
Throws: AccountException: if Amount > Balance

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