Sams Teach Yourself J2EE™ in 21 Days

Exercises

The exercise starts with a version of today's case study that has a complete set of Session beans, but an incomplete set of Entity beans. Where there is no Entity bean, the Session bean performs direct SQL. The state of affairs is shown in Table 6.4.

Table 6.4. Case Study Session and Entity Beans

Session Bean	Functional Area	Functions	Implementation/Delegation
Agency	Applicants	create, delete, find all	Direct SQL
	Customers	create, delete, find all	Customer bean
	Locations	add, get details, get plural, remove	Location bean
	Skills	add, get details, get plural, remove	Skill bean
Advertise	Job	create, delete, get plural	Job bean
	Customer	get details, update	Customer bean
AdvertiseJob	Job	get details, update	Skill bean, Location bean ...