Interested to Buy Any Domain ? << Click Here >> for more details...
Explain Stateful session bean life cycle?
- 2 Answers
- 8096 Views
- Accenture, I also Faced
- E-Mail Answers
Answer Posted / hari
Life Cycle of a Stateful Session Bean
While in the ready stage, the EJB container may decide to deactivate, or passivate, the bean by moving it from memory to secondary storage. (Typically, the EJB container uses a least-recently-used algorithm to select a bean for passivation.) The EJB container invokes the bean's ejbPassivate method immediately before passivating it. If a client invokes a business method on the bean while it is in the passive stage, the EJB container activates the bean, moving it back to the ready stage, and then calls the bean's ejbActivate method.
At the end of the life cycle, the client invokes the remove method and the EJB container calls the bean's ejbRemove method. The bean's instance is ready for garbage collection.
Your code controls the invocation of only two life-cycle methods--the create and remove methods in the client. All other methods in are invoked by the EJB container. The ejbCreate method, for example, is inside the bean class, allowing you to perform certain operations right after the bean is instantiated. For instance, you may wish to connect to a database in the ejbCreate method.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
How can enterprise javabeans be accessed from active server pages?
Name the attributes of javax.ejb.stateful.
What is backing bean?
Is it possible to share an httpsession between a jsp and ejb?
What is the procedure for the presentation of ejb persistence mechanism?
What do you mean by in-memory replication?
What are the basic and subtypes of enterprise java beans (ejb)?
What is the purpose of ejb in java?
Is it possible to write two ejb’s that share the same remote and home interfaces, and have different bean classes? If so, what are the advantages/disadvantages?
What is dependency injection in ejb?
What is stateless and stateful session bean in ejb?
What is ejb and its types?
Write the basic requirement of a cmp entity based class in 2.0 from ejb 1.1?
Why do we need ejb?
What are the attributes of transaction in ejb?
