Win a copy of Functional Reactive Programming this week in the Other Languages forum!
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

Why we cannot assign the persistent relationship field in ejbCreate() ?

 
Steven Gao Song
Ranch Hand
Posts: 78
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi, Buddies,

I have a problem when I am reading the HFEJB Page 396.

It is said that we must NOT try to reference our own persistent
RELATIONSHIPS in ejbCreate(). But,it is safe to assign the persistent relationship field in ejbPostCreate().

I cannot understand that.

In ejbCreate() method, the container will use the persistent fields to make
the new row in the database. For the CMR field, there should be a
corresponding foreign key field in the row. Why, the foreign key field cannot be inserted into the row, together with the other persistent fields?


Thanks a lot!
 
Ugender Rekulampally
Ranch Hand
Posts: 135
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Steven,

the row will be inserted in the database after ejbCreate() finishes. So while you are in ejbCreate(), you still dont have data that you are trying to refer. but that row/data will be available in ejbPostCreate() method.

Thanks,
Ugender
 
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic