user transaction
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From: gk on 10 Aug 2010 05:43 Here is a code from Mastering Enterprise Java Bean which Idon't understand . Could you please clarify this doubt ? Here is the excerpt http://i218.photobucket.com/albums/cc298/curseofgoldendragon/usertransaction.png
From: Lew on 10 Aug 2010 08:17 gk wrote: > Here is a code from Mastering Enterprise Java Bean which Idon't > understand . Could you please clarify this doubt ? > > Here is the excerpt > http://i218.photobucket.com/albums/cc298/curseofgoldendragon/usertransaction.png Assuming the comments in red are yours, here are my answers: - Yes, pretty much. - Yes, those have it. - No. - Yes. But they must support a rollback mechanism. Additional commentary: - The JNDI name is whatever you configure it to be. It doesn't have to be "UserTransaction". - Read up on JNDI. (That's a strong suggestion.) P.S., it's better to just quote something this short in your post rather than making a graphic and linking to it. You can just use the clipboard to paste the code into your post. I don't even begin to understand why you did it that way. Plus, it'd make it much easier to respond inline if you had used text. -- Lew
From: gk on 10 Aug 2010 08:30 You can just use the clipboard to paste > the code into your post. I don't even begin to understand why you did it that > way. Plus, it'd make it much easier to respond inline if you had used text. > > -- > Lew Thats because I was reading from "Google Books" . There was no text to copy to clipboard...it was in graphic form. thanks for your post. >>> The JNDI name is whatever you configure it to be. It doesn't have to be "UserTransaction". my question for this was little different . What I meant is , whether there is a spec that application servers have to employ a JTA service MANDATORY so that developer can get a handle of it . Yea , I understand this does not have to be the text "UserTransaction" Always.
From: Lew on 10 Aug 2010 12:36 gk wrote: > my question for this was little different . What I meant is , whether > there is a spec that application servers have to employ a JTA service > MANDATORY so that developer can get a handle of it . No, it's not mandatory, but it's pretty near universal, including for the products you specifically mentioned. That's what I meant by, "Yes, pretty much" and "Yes, those have it". Tomcat does not, AFAIK. A few minutes with the docs for the products about which you asked will clarify matters. Reading the ... manual is always recommended. -- Lew
From: Arne Vajhøj on 10 Aug 2010 19:43
On 10-08-2010 08:30, gk wrote: > my question for this was little different . What I meant is , whether > there is a spec that application servers have to employ a JTA service > MANDATORY so that developer can get a handle of it . JTA is required by the Java EE spec, so any compliant Java EE app server will support JTA. Arne |