This week's giveaway is in the Testing forum.
We're giving away four copies of TDD for a Shopping Website LiveProject and have Steven Solomon on-line!
See this thread for details.
Win a copy of TDD for a Shopping Website LiveProject this week in the Testing forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Paul Clapham
  • Ron McLeod
  • Jeanne Boyarsky
  • Tim Cooke
Sheriffs:
  • Liutauras Vilda
  • paul wheaton
  • Henry Wong
Saloon Keepers:
  • Tim Moores
  • Tim Holloway
  • Stephan van Hulst
  • Carey Brown
  • Frits Walraven
Bartenders:
  • Piet Souris
  • Himai Minh

WILL NOT BE PORTABLE?why?

 
Ranch Hand
Posts: 130
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
can somebody explain this?
Containers may optionally support the use of the NotSupported, Supports, and Never transaction attributes for the methods of entity beans with container-managed persistence. However, entity beans with container-managed persistence that use these transaction attributes WILL NOT BE PORTABLE.
my explanation is:
is it because these methods can run in a unspecified context which varies from container to container and each container deals with this unspecified context in its own way.
thanks
Pradeep
[ March 17, 2004: Message edited by: pradeep arum ]
 
Ranch Hand
Posts: 1066
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
thanks Pradeep, Only in the other post, I was wondering where I had read this. I think you are right.
EJB2.0 specs, p:352, sec 17.4.1

For entity beans that use EJB 2.0 container-managed persistence, only the Required,RequiresNew, or Mandatory transaction attributes should be used for the methods defined in the bean�s component interface and all the direct and indirect superinterfaces of the component interface,
excluding the getEJBHome, getEJBLocalHome, getHandle, getPrimaryKey, and isIdentical methods; and for the methods defined in the bean�s home interface and all the direct and indirect superinterfaces of the home interface, excluding the getEJBMetaData and getHomeHandle
methods specific to the remote home interface.


Containers may optionally support the use of the NotSupported, Supports, and Never transaction attributes for the methods of entity beans with container-managed persistence. However, entity beans with container-managed
persistence that use these transaction attributes will not be portable.



Containers may optionally support the use of the NotSupported, Supports, and Never transaction attributes for the methods of entity beans with container-managed persistence because the use of these transaction modes may be needed to make use of container-managed persistence with non-transactional data stores. In general, however, the Application Assembler
should avoid use of the NotSupported, Supports, and Never transaction attributes for the methods of entity beans with container-managed persistence because it may lead to inconsistent results or to the inconsistent and/or to the partial updating of persistent state and relationships in the event of concurrent use.

 
pradeep arum
Ranch Hand
Posts: 130
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
thanks Vish,
thats a good answer
thanks
pradeep
 
Catch Ernie! Catch the egg! And catch this tiny ad too:
free, earth-friendly heat - a kickstarter for putting coin in your pocket while saving the earth
https://coderanch.com/t/751654/free-earth-friendly-heat-kickstarter
reply
    Bookmark Topic Watch Topic
  • New Topic