• 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 all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Ron McLeod
  • Paul Clapham
  • Bear Bibeault
  • Junilu Lacar
Sheriffs:
  • Jeanne Boyarsky
  • Tim Cooke
  • Henry Wong
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Tim Holloway
  • salvin francis
  • Frits Walraven
Bartenders:
  • Scott Selikoff
  • Piet Souris
  • Carey Brown

EJB how to?

 
Ranch Hand
Posts: 57
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Can you tell me how session beans call entity beans to make transactions?
I use WebLogic 6.1 plus JBuilder7.0.
Thanx in advance!
 
author
Posts: 11962
5
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

Can you tell me how session beans call entity beans to make transactions?


Do you mean "transactions" as in "I want to rollback if something goes wrong" or as in "I am doing some operation that the regular folks call a transaction"? I am assuming the latter...
1) Get an InitialContext. If the beans are in the same application, a simple new InitialContext() should do (otherwise you'll need to give some configuration parameters to the constructor).
2) Make a JNDI lookup for the entity bean's home interface. This could be done either by using the full JNDI name (e.g. "ejb/com/mycompany/ejbs/MyEntityBean"), or a logical JNDI name (e.g. "java:comp/env/ejb/MyEntityBean"). This depends on your ejb-jar.xml.
3) Use the home interface for creating/finding the entity you want
4) Invoke methods on the entity bean.
 
Whatever you say buddy! And I believe this tiny ad too:
Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop
https://coderanch.com/wiki/718759/books/Building-World-Backyard-Paul-Wheaton
    Bookmark Topic Watch Topic
  • New Topic