I have some import question about the PM manager on JBOSS:
QUESTION 1:
Let's say I have two objects (user and books) which map to two
tables in a database.
Table USER: USER_ID USERNAME
table BOOKS: USER_ID BOOK_ID
with a relationship of 1 - M.
(So the user object would have a collection of books as data member.)
let's say I queried for a user with USER_ID = 1.
would the PM also load all the Books associated with that user ?
Question n'2:
If I then fetched a particular user (USER_ID = 1)
and I wanted to add a new book (BOOK_ID = 2)
class user ...
Collection books;
..........
books.add( book);
would the PM load the entire Collection ?
In general would the PM load the whole collection when we call any method on the collection? Or when would it ?
Thanks.
Giuseppe.
