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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
I agree. Here's the link:
subject: CMR assignment rules...
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Assignment rules for relationships
One to Many Bidirectional Relationship
Setting to null an element of the many side of a relationship
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