Ashwani,
Actually I believe transient fields are to be used when:
(a) The state (fields) being held by the bean is not
serializable (either regular Java serialization
or IIOP serialization or whatever custom serialization
a Container uses)
(b) The field(s) though serializable may only have a short
[valid] lifespan. In which case, you probably want to
re-initialize/validate them on every activation/passivation
cycle.
-krish
> -----Original Message-----
> From: A mailing list for Enterprise JavaBeans development
> [mailto:[EMAIL PROTECTED]]On Behalf Of Ashwani Kalra
> Sent: Monday, May 13, 2002 2:29 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Trade-offs between use of transient data and ejbPassivate
>
>
> hi,
> ejb specification 1.1 says that use of transient fields is discouraged
> refer page 52 of the pdf from Sun Microsystems
>
> When I last read it, The reason may be that the application programmer is
> then reponsible for initializing those transient fields when ejbActivate is
> called.
> Just check it in the ejbActivate method description.
> There is nothing more to it
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Thanks
> Ashwani Kalra
> http://www.geocities.com/ashwani_kalra/
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
> ----- Original Message -----
> From: "Shailendra Mishra" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Monday, May 13, 2002 4:05 PM
> Subject: Trade-offs between use of transient data and ejbPassivate
>
>
> hi guys,
>
> could some one please point out the pros and cons of using transient
> fields in session beans and how different is it from having
> non-transient variables and writing the appropriate code in ejbActivate
> and ejbPassivate to handle the serializable issue.
>
> ejb specification 1.1 says that use of transient fields is discouraged
> refer page 52 of the pdf from Sun Microsystems.
>
> i am aware that making variables transinet would not persist the data
> and hence would give some performance improvement. is there more to this
> ?
>
> expecting ur reply
>
> Shailendra Mishra
> MphasiS India
> 'Apeego House', 4-B Tardeo Road
> Mumbai 400 034, INDIA
> Tel: +91 22 491 4901 ext 1004
> Fax: +91 22 496 1059
> Dont think you are, know you are - Morpheus
>
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