A friendly place for programming greenhorns!
Big Moose Saloon
Register / Login
Win a copy of
Elasticsearch in Action
this week in the
EJB Certification (SCBCD/OCPJBCD)
CMR assignment rules...
Joined: Jan 23, 2001
Aug 17, 2005 16:18:00
In assignment rules for relationships (pg 154 of
A and B are in one-to-one bidirectional relation..
a1 <--> b1
a2 <--> b2
a1.setB(a2.getB()) will result in
'a2.getB() == null'.
Suppose we just have:
a1.setB(b2) (that is, not accessing b2 through a2), will the container still be aware that b2 is involved with a2 and yield the same result ?
Joined: Jun 01, 2005
Aug 17, 2005 17:54:00
In bean class cmp fields are not declared. But the getters and setters for cmp fields are declared. So, there is no way we can set
Ratna bhilla<br />SCJP 1.4, SCBCD 1.3, SCWCD 1.4
Praveen Kumar Mathaley
Joined: Apr 14, 2003
Aug 18, 2005 22:12:00
can get to local reference to entity bean b in the entity bean a and set it
still container figures it out and makes the reference for other to null
[ August 18, 2005: Message edited by: Praveen Kumar Mathaley ]
Joined: May 26, 2005
Aug 18, 2005 23:41:00
yes,the same result.
a2.getB()==null,because the container will do it for us
SCEA<br />SCJP 1.2<br />SCBCD<br />MCSD<br />IBM Certified Specialist RUP v2003<br />IBM Certified Solution Designer OOAD vUML2<br /> <br />Phone Number:86-010-82776427
Don't get me started about those stupid
subject: CMR assignment rules...
How can I serialize thread handling with Java 5's java.util.concurrent package?
kathy sierra question doubt
Assignment rules for relationships
One to Many Bidirectional Relationship
Setting to null an element of the many side of a relationship
All times are in JavaRanch time: GMT-6 in summer, GMT-7 in winter
| Powered by
Copyright © 1998-2015