conversational state

[Michael Meyer]

Hi,

I tried mock exam on ejbcertificate.com and i was confused with one question


Question : - Which one of the following statements regarding a session bean's conversational state is true?

1. Stateless and stateful session beans both maintain conversational state.
2. An object reference to the java:comp/env JNDI context that is stored in session bean's conversational state is not perserved when the session bean is passivated.
3. The conversational state of a session bean with container-managed transaction demarcation is automatically rolled back to its initial state if a system exception is thrown by a business method.
4. A session bean's conversational state can hold an open socket connection.
5. Non-transient fields of a session bean's conversational state are lost when a session bean is passivated


Correct ANSWER 4

I think answer 1 is also correct. A stateless has also a conversational state, but not between methods (see also EJB Spec 7.3)
What is the correct definition of "conversational state"?

Regards,

Michael Meyer

[Karthikeyan Varadarajan]

HI Michael,

'Having conversational State ' is different from 'Maintaining the conversational State'.

Both Statefull and Stateless session beans can have conversation data. But only Stateful beans can maintain it.

In case of the stateless bean , if your are calling second time , there are chance you can get some other bean to serve your request.

~With SMile
VK

[Michael Meyer]

Hi Karthikeyan,

thanks for your answer.
I should stop my preparation for two days ;-)

Regards,

Michael