Sorry, I should have included this in the description. This takes place in
a Session Bean and using WLS7.
|---------+--------------------------->
| | "Ritesh Gupta" |
| | <mylists@postmar|
| | k.net> |
| | |
| | 01/16/2003 09:09|
| | PM |
| | |
|---------+--------------------------->
>---------------------------------------------------------------------------------------------------------------|
|
|
| To: "Justin Wesbrooks" <[EMAIL PROTECTED]>
|
| cc:
|
| Subject: Re: Wierd CMR behavior
|
>---------------------------------------------------------------------------------------------------------------|
Hi,
Can you tell where you are trying to do this updating (bean, helper class,
jsp ?)?
Ritesh
----- Original Message -----
From: "Justin Wesbrooks" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, January 17, 2003 3:35 AM
Subject: Wierd CMR behavior
> I have a CMP (beanA) with a 1 to many relationship with beanB, so beanA
> instance has a collection of beanB's. The following pseudocode is what I
> do.
>
>
//**************************************************************************
> //beanA.getBeanBs().size() equals 2 here
> //I have a temp collection of BeanBs that I need to compare to
> //the real collection in beanA. If I compare one bean at a time,
> //as in the following...
>
> Iterator it = tmpColl.iterator();
> while(it.hasNext()){
> BeanB beanb = (BeanB)it.next();
> //The following prints out TRUE for every bean
> System.out.println(beanA.getBeanBs().contains(beanb));
> }
>
> //so at this point, I know that all beans in the temp collection
> //are contained in the real collection
>
> //i want to keep all beans in the temp collection in the real
> //collection and remove all beans in the real collection that
> //aren't in the temp collection.
>
> beanA.getBeanBs().retainAll(tmpColl);
> System.out.println(beanA.getBeanBs().size());
> //This prints out "0" when it should print out 2 ????
>
//**************************************************************************
*
>
> I can't figure out why it's removing both beans from the real
> collection when I just verified they exist in both collections. I feel
> like there is some behavior with the retainAll() method that
> I'm not aware of that's throwing me off. In addition to this, even
> though all beanBs are removed from beanA when I call
> retainAll(), they still remain in the underlying database??
>
> Has anyone experienced this kind of behavior??
>
>
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