You are absolutely right! I am seeing the same behavior. You should file
a bug with BEA.
I tried a few ways of getting around the problem. The following code -
which is very clumsy - works!
You may already know this, or you may have your own variation :)
But here it is...
Collection beanB = beanA.getBeanBs();
Iterator itr = beanB.iterator();
while (itr.hasNext()) {
BeanBLocalEntity beanBLocal
= (BeanBLocalEntity) itr.next();
beanBLocal.remove();
//Since 'remove' changes the underlying collection,
//I had to update it.... otherwise I got
'ConcurrentModificationException'!
//(This is for testing only..I am sure this code can be
improved..a lot!)
beanB = beanA.getBeanBs();
itr = beanB.iterator();
}
Thanks.
>-- Original Message --
>Date: Mon, 20 Jan 2003 12:53:48 -0800
>From: "Ajay Chitre" <[EMAIL PROTECTED]>
>Subject: Re: Relationship deletion question
>Reply-To: [EMAIL PROTECTED]
>To: "Justin Wesbrooks" <[EMAIL PROTECTED]>,
> [EMAIL PROTECTED]
>
>
>Oh, I see what you are trying to do! Let me try that and see what happens.
>
>Got to go to a meeting though. Will get back to you later!
>
>Thanks.
>
>>-- Original Message --
>>Date: Mon, 20 Jan 2003 12:43:02 -0800
>>Reply-To: Justin Wesbrooks <[EMAIL PROTECTED]>
>>From: Justin Wesbrooks <[EMAIL PROTECTED]>
>>Subject: Re: Relationship deletion question
>>To: [EMAIL PROTECTED]
>>
>>
>>Sorry, I missed what you were saying. I'm not actually trying to delete
>>Bean A though.
>>It's remaining, just the associated Bean B objects need to be removed.
>>
>>
>>
>>
>>|---------+------------------------------>
>>| | "Ajay Chitre" |
>>| | <ajay.chitre@dilige|
>>| | ntteam.com> |
>>| | |
>>| | 01/20/2003 12:39 PM|
>>| | Please respond to |
>>| | Ajay.Chitre |
>>| | |
>>|---------+------------------------------>
>>
>>---------------------------------------------------------------------------------------------------------------|
>> |
>
>> |
>> | To: "Justin Wesbrooks" <[EMAIL PROTECTED]>,
>[EMAIL PROTECTED]
>> |
>> | cc:
>
>> |
>> | Subject: Re: Relationship deletion question
>
>> |
>>
>>---------------------------------------------------------------------------------------------------------------|
>>
>>
>>
>>
>>Actually I am calling 'remove' only once for BeanA. The "cascade delete"
>>takes care of iteration. I had to set 'cascade delete' only on BeanB.
>>
>>
>>
>>>-- Original Message --
>>>Date: Mon, 20 Jan 2003 12:33:54 -0800
>>>Reply-To: Justin Wesbrooks <[EMAIL PROTECTED]>
>>>From: Justin Wesbrooks <[EMAIL PROTECTED]>
>>>Subject: Re: Relationship deletion question
>>>To: [EMAIL PROTECTED]
>>>
>>>
>>>I have tried the <cascade-delete/> setting with no difference in results.
>>>
>>>I don't call remove on each individual bean because I don't want to have
>>>to
>>>iterate through
>>>the collection when one call should do what I need it to (and does in
>the
>>>other instance).
>>>
>>>Thanks
>>>
>>>
>>>
>>>|---------+------------------------------>
>>>| | "Ajay Chitre" |
>>>| | <ajay.chitre@dilige|
>>>| | ntteam.com> |
>>>| | |
>>>| | 01/20/2003 12:29 PM|
>>>| | Please respond to |
>>>| | Ajay.Chitre |
>>>| | |
>>>|---------+------------------------------>
>>> >
>>---------------------------------------------------------------------------------------------------------------|
>>
>>> |
>>
>>> |
>>> | To: "Justin Wesbrooks" <[EMAIL PROTECTED]>,
>>[EMAIL PROTECTED]
>>> |
>>> | cc:
>>
>>> |
>>> | Subject: RE: Relationship deletion question
>>
>>> |
>>> >
>>---------------------------------------------------------------------------------------------------------------|
>>
>>>
>>>
>>>
>>>
>>>Justin,
>>>
>>>Have you tried setting <cascade-delete/> on BeanB? If you haven't, can
>>>you please try and tell us what happens.
>>>
>>>Also, try 'beanA.remove()' as opposed to 'beanA.getBeanBs().clear()'.
>>>
>>>This works for me for '1:N relationships'.
>>>
>>>Thanks.
>>>
>>>>-- Original Message --
>>>>Date: Mon, 20 Jan 2003 11:20:18 -0800
>>>>Reply-To: Justin Wesbrooks <[EMAIL PROTECTED]>
>>>>From: Justin Wesbrooks <[EMAIL PROTECTED]>
>>>>Subject: Relationship deletion question
>>>>To: [EMAIL PROTECTED]
>>>>
>>>>
>>>>AppServer: WLS 7.0
>>>>
>>>>I have 2 beans with a 1:N relationship. BeanA has a Collection
>>>>of BeanB. I try to call BeanA.getBeanBs().clear(). All items
>>>>are removed from the Collection, however, nothing is removed
>>>>from the underlying database. I have another situation similar to
>>>>this one and the exact same call works. I'll highlight the differences
>>>>in the 2 below.
>>>>
>>>>Working situation
>>>>=====================
>>>>True M:N relationship with CMP (as outlined in Ed Roman book).
>>>>String as primary key (no primary key class)
>>>>clear() removes all records from the association table.
>>>>
>>>>Non-working situation
>>>>=====================
>>>>1:N relationship
>>>>The collection class has compound PK class.
>>>>The collection class also has a M:1 relationship with another CMP bean.
>>>>(This is kind of like the "Fake M:N relationship described in the Ed
>>Roman
>>>>book)
>>>>
>>>>Both of these calls are made in a Stateless Session bean. Can
>>>>someone point me to some literature on this or provide any insight??
>>>>
>>>>
>>>
>>===========================================================================
>>>>To unsubscribe, send email to [EMAIL PROTECTED] and include in the
>>>body
>>>>of the message "signoff EJB-INTEREST". For general help, send email
>to
>>>>[EMAIL PROTECTED] and include in the body of the message "help".
>>>>
>>>
>>>
>>===========================================================================
>>>To unsubscribe, send email to [EMAIL PROTECTED] and include in the
>>body
>>>of the message "signoff EJB-INTEREST". For general help, send email
to
>>>[EMAIL PROTECTED] and include in the body of the message "help".
>>>
>>
>>Ajay Chitre
>>
>>Diligent Team, Inc.
>>(Where Diligent People Work as a Team)
>>
>>http://www.DiligentTeam.com
>>
>>===========================================================================
>>To unsubscribe, send email to [EMAIL PROTECTED] and include in the
>body
>>of the message "signoff EJB-INTEREST". For general help, send email to
>>[EMAIL PROTECTED] and include in the body of the message "help".
>>
>
>
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