This week's book giveaway is in the Android forum.
We're giving away four copies of Android Programming: The Big Nerd Ranch Guide and have Bill Phillips & Chris Stewart on-line!
See this thread for details.
Win a copy of Android Programming: The Big Nerd Ranch Guide this week in the Android forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic

Entity beans relationships question in the HFE  RSS feed

 
Adri Smith
Ranch Hand
Posts: 76
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
From the HFE book, p432 q4:

Given the container-managed unidirectional relationship:

Foo(0-1) -> Bar(0-1)

and the object relations:

f1->b1
f2->b2

What will be true after the following code runs?

f2.setBar(f1.getBar())

How is it possible that 'b2.getFoo()==null' is one of the correct answers ? If the relationship is unidirectionnal this means we can call the method getBar() on the Foo beans but not the method getFoo() on the Bar Beans.

I took a look at the errata, nothing has been specified about this.

Thanks in advance for your help,
Adri
 
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!