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Class examples.jolt.ejb.bankapp.TellerBean

java.lang.Object
   |
   +----examples.jolt.ejb.bankapp.TellerBean

public class TellerBean

extends Object

implements SessionBean

• Accessing a Jolt server
• Automatic persistence of state between calls to the SessionBean
• The statefulness of this EJBean is the teller's name and the current Transaction (if any)
• Application-defined exceptions

Author:

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

tellerName

tellerTransaction

TellerBean()

balance(int)

Returns the current balance for an Account.

begin()

Begins a transaction.

commit()

Commits the current transaction.

deposit(int, double)

Deposits amount in account.

ejbActivate()

Called when the EJBEan is activated.

ejbCreate(String)

This method corresponds to the create method in the home interface "TellerHome.java".

ejbPassivate()

Called when the EJBEan is passivated.

ejbRemove()

Called when the EJBean is removed.

getTellerName()

Returns the name of this Teller.

rollback()

Rolls back the current transaction.

setSessionContext(SessionContext)

Sets the session context.

withdraw(int, double)

Withdraws amount from account.

 public String tellerName

 public Transaction tellerTransaction

 public TellerBean()

 public void ejbActivate() throws RemoteException

Called when the EJBEan is activated. Establishes reference to Jolt session pool.

 public void ejbRemove()

Called when the EJBean is removed. Removes reference to Jolt session pool.

 public void ejbPassivate()

Called when the EJBEan is passivated. Removes reference to Jolt session pool.

 public void setSessionContext(SessionContext ctx)

Sets the session context.

Parameters:

ctx - SessionContext Context for session

 public void ejbCreate(String tellerName) throws CreateException

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

It sets the name of the Teller and then attempts to get a session from the Jolt session pool.

Parameters:

tellerName - String Teller name

Throws: CreateException

if there is an error while initializing the Jolt pool

See Also:

Teller

 public TellerResult deposit(int accountNumber,
                             double amount) throws ProcessingErrorException, TransactionErrorException

Deposits amount in account.

Parameters:

accountNumber - int Account number

amount - double Amount to deposit

Returns:

TellerResult Trade result

Throws: ProcessingErrorException

if there is an error making the deposit

Throws: TransactionErrorException

if there is an error making the deposit

 public TellerResult withdraw(int accountNumber,
                              double amount) throws ProcessingErrorException, TransactionErrorException

Withdraws amount from account.

Parameters:

accountNumber - int Account number

amount - double Amount to withdraw

Returns:

TellerResult Trade result

Throws: ProcessingErrorException

if there is an error making the withdrawl

Throws: TransactionErrorException

if there is an error making the withdrawl

 public TellerResult balance(int accountNumber) throws ProcessingErrorException, TransactionErrorException

Returns the current balance for an Account.

Parameters:

accountNumber - int Account number

Returns:

TellerResult Trade result

Throws: ProcessingErrorException

if there is an error retrieving the balance

Throws: TransactionErrorException

if there is an error retrieving the balance

 public void begin() throws TransactionErrorException

Begins a transaction. If the bean already has a transaction, it is used and a new one is not started.

Returns:

TellerResult Trade result

Throws: TransactionErrorException

if there is an error beginning the transaction

 public void commit() throws TransactionErrorException

Commits the current transaction.

Returns:

TellerResult Trade result

Throws: TransactionErrorException

if there is an error committing the transaction or there is no transaction to commit

 public void rollback() throws TransactionErrorException

Rolls back the current transaction.

Returns:

TellerResult Trade result

Throws: TransactionErrorException

if there is an error rolling back the transaction or there is no transaction to rollback

 public String getTellerName()

Returns the name of this Teller.

Returns:

String tellerName

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