Certification
SCBCD
SCBCD Study Notes : Chapter 4 : Session Bean Life Cycle
SCBCD Study Notes : Chapter 4 : Session Bean Life Cycle - Page 2
SCBCD Study Notes : Chapter 4 : Session Bean Life Cycle - Page 3
Stateless Session Bean
Table 4.2. Operations allowed in the methods of a stateless session bean.
|
Bean method
|
Bean method can perform the following operations
|
|
|
Container-managed transaction demarcation
|
Bean-managed transaction demarcation
|
|
|
constructor
|
-
|
-
|
|
|
methods: , .
JNDI access to
|
methods: , .
JNDI access to
|
|
|
methods: , , , .
JNDI access to
|
methods: , , , , .
JNDI access to
|
|
Business method from component interface
|
methods: , , , , , , .
JNDI access to
Resource manager access
Enterprise bean access
|
methods: , , , , , .
methods
JNDI access to
Resource manager access
Enterprise bean access
|
Given a list of scenarios, identify which will result in an ejbRemove method not being called on a bean instance.
The Bean Provider CANNOT assume that the Container will always invoke the ejbRemove() method on a session bean instance. The following scenarios result in ejbRemove() not being called on an instance:
If the session bean instance allocates resources in the ejbCreate< METHOD >(...) method and/or in the business methods, and normally releases the resources in the ejbRemove() method, these resources WILL NOT be automatically released in the above scenarios. The application using the session bean should provide some clean up mechanism to periodically clean up the unreleased resources.
__________________
Author: Mikalai Zaikin. Please Click Here to visit Authors site for any updates and changes to the study notes.
First Page: SCBCD Study Notes : Chapter 4 : Session Bean Life Cycle