examples.ejb20.cascadeDelete.one2many
Class AccountBean

java.lang.Object
  |
  +--examples.ejb20.cascadeDelete.one2many.AccountBean

All Implemented Interfaces:

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

public abstract class AccountBean

extends java.lang.Object

implements javax.ejb.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.
• Use of EJB 2.0 relationships.
• Use of EJB-QL in query methods.

Author:

Copyright (c) 1998-2000 by BEA Systems, Inc. All Rights Reserved.

Field Summary

(package private) static boolean

VERBOSE

Constructor Summary

AccountBean()

Method Summary

java.lang.String	accountType() Returns the account type.
double	balance() Returns current balance.
double	deposit(double amount) Adds amount to balance.
void	ejbActivate() This method is required by the EJB Specification, but is not used by this example.
java.lang.String	ejbCreate(java.lang.String accountId, double initialBalance, java.lang.String type) This method corresponds to the create method in the home interface "AccountHome.java".
void	ejbLoad() This method is required by the EJB Specification, but is not used by this example.
void	ejbPassivate() This method is required by the EJB Specification, but is not used by this example.
void	ejbPostCreate(java.lang.String accountId, double initialBalance, java.lang.String type) 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.
void	ejbStore() Sets the EJBean's modified flag to false.
abstract java.lang.String	getAccountId() container managed fields
abstract java.lang.String	getAccountType()
abstract double	getBalance()
abstract Customer	getCustomer()
abstract void	setAccountId(java.lang.String val)
abstract void	setAccountType(java.lang.String val)
abstract void	setBalance(double val)
abstract void	setCustomer(Customer c)
void	setEntityContext(javax.ejb.EntityContext ctx) Sets the EntityContext for the EJBean.
void	unsetEntityContext() Unsets the EntityContext for the EJBean.
double	withdraw(double amount) Subtracts amount from balance.

Methods inherited from class java.lang.Object

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

Field Detail

VERBOSE

static final boolean VERBOSE

Constructor Detail

AccountBean

public AccountBean()

Method Detail

accountType

public java.lang.String accountType()

Returns the account type.

Returns:

String account Type

balance

public double balance()

Returns current balance.

Returns:

double Balance

deposit

public double deposit(double amount)

Adds amount to balance.

Parameters:

amount - double Amount

Returns:

double balance

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.EntityBean

ejbCreate

public java.lang.String ejbCreate(java.lang.String accountId,
                                  double initialBalance,
                                  java.lang.String type)
                           throws javax.ejb.CreateException

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 null, unlike the case of bean-managed persistence, where it returns a primary key.

Parameters:

accountID - String Account ID

initialBalance - double Initial Balance

Throws:

javax.ejb.CreateException - if there is a problem creating the bean

ejbLoad

public void ejbLoad()

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

Specified by:

ejbLoad in interface javax.ejb.EntityBean

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.EntityBean

ejbPostCreate

public void ejbPostCreate(java.lang.String accountId,
                          double initialBalance,
                          java.lang.String type)
                   throws javax.ejb.CreateException

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

Parameters:

accountID - String Account Identification

initialBalance - double Initial Balance

type - String Account type

ejbRemove

public void ejbRemove()
               throws javax.ejb.RemoveException

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

Specified by:

ejbRemove in interface javax.ejb.EntityBean

Throws:

javax.ejb.RemoveException - if the EJBean does not allow removing the EJBean

ejbStore

public void ejbStore()

Sets the EJBean's modified flag to false. set to false to "reset" the variable for the next transaction.

Specified by:

ejbStore in interface javax.ejb.EntityBean

getAccountId

public abstract java.lang.String getAccountId()

container managed fields

getAccountType

public abstract java.lang.String getAccountType()

getBalance

public abstract double getBalance()

getCustomer

public abstract Customer getCustomer()

setAccountId

public abstract void setAccountId(java.lang.String val)

setAccountType

public abstract void setAccountType(java.lang.String val)

setBalance

public abstract void setBalance(double val)

setCustomer

public abstract void setCustomer(Customer c)

setEntityContext

public void setEntityContext(javax.ejb.EntityContext ctx)

Sets the EntityContext for the EJBean.

Specified by:

setEntityContext in interface javax.ejb.EntityBean

Parameters:

ctx - EntityContext

unsetEntityContext

public void unsetEntityContext()

Unsets the EntityContext for the EJBean.

Specified by:

unsetEntityContext in interface javax.ejb.EntityBean

withdraw

public double withdraw(double amount)

Subtracts amount from balance.

Parameters:

amount - double Amount

Returns:

double Balance if Amount > Balance