This is the pseudo code
Question - base class
MultipleChoice question - Subclass of question
AssessmentGroup - 1: n with Question
(MultipleChoice and other sub classes of Question are in the same table
identified by objconcreteclass)
code
Transaction tx - odmg.currentTransaction();
tx.lock (mutliplechoiceobj)
db.deletePersistent(multiplechoiceobj)
Detailed log shows that MutipleChoice is registered and locked, but the
exception says
Unexpected behaviour, unregistered object to delete:
com.tk20.bo.evaluationinstrument.Question{100007f15c458c10ff4485144-7d2d},
main object is
com.tk20.bo.template.AssessmentGroup{100007f15c458c10ff4485144-7d2f},
envelope object is
[EMAIL PROTECTED],ModificationState=org.apache.ojb.odmg.states.StateOldDelete]
Why does it try to see whether the base class is registered or not? Should
it not identify the exact subclass it is
I modified the repository_user.xml for mappings for
AssessmentGroup
<collection-descriptor
name="questionsInternal"
collection-class="org.apache.ojb.broker.util.collections.ManageableArrayList"
element-class-ref="com.tk20.bo.evaluationinstrument.Question"
auto-retrieve="true"
auto-update="object"
auto-delete="object">
<inverse-foreignkey field-ref="assessmentGroupPk"/>
</collection-descriptor>
Mappings for MutlipleChoice and Question as
<reference-descriptor
name="assessmentGroup"
class-ref="com.tk20.bo.template.AssessmentGroup"
auto-retrieve="true"
auto-update="none"
auto-delete="object">
<foreignkey field-ref="assessmentGroupPk"/>
</reference-descriptor>
arminw wrote:
>
> Hi,
>
> mananthakris wrote:
>> I checked that our repository_user file does not contain auto_XXX for an
>> reference-desc and collection-desc, are these mandatory and could be
>> cause
>> of problems?
>>
>
> It seems that OJB can't find the Question object in intern object
> registry using it's Identity. OJB detect that the object no longer
> exists in the 1:n reference and try to remove the Question object.
>
> To enable cascading delete it's mandatory to set auto-delete="object".
> http://db.apache.org/ojb/docu/guides/odmg-guide.html#Specific+Metadata+Settings
>
> Could you please post the used source or pseudo code?
>
> regards,
> Armin
>
>> mananthakris wrote:
>>> Hi,
>>>
>>> We are using same table for different subclasses using a varchar column
>>> and define ojbConcreteClass to find the actual class.
>>>
>>> When we try to delete a object in a relationship , i see an error
>>> "unregistered object for delete:" . I saw a previous forum question,
>>> suggestion for the error and implemented writing locks for all objects
>>> in
>>> transaction, but we still have the error.
>>>
>>> In our case we have an object AssessmentGroup and an object Question in
>>> 1:n relationship ( Question has different types of questions /subclasses
>>> in a same table differentiated with classidentity column of the table).
>>>
>>> This error occurs when we delete a MultipleChoice sublclass of Question
>>> and remove its relationship with AssessmentGroup.
>>>
>>> Detailed logs shows we are locking
>>> AssessmentGroup,MultipleChoice(subclass) before delete,
>>>
>>> but the exception shows even when we are writing
>>> db.deletePersistent(multiplechoiceobj) , it is trying to delete base
>>> class
>>> internally. Do you think this is expected behaviour? Are we supposed to
>>> lock base class inspite of knowing which exact class we are deleting?
>>>
>>> The exception is
>>>
>>> org.apache.ojb.odmg.Image$ImageException: Unexpected behaviour,
>>> unregistered object to delete:
>>> com.tk20.bo.evaluationinstrument.Question{100007f1388e5e10fe3fa0849-7ff1},
>>> main object is
>>> com.tk20.bo.template.AssessmentGroup{100007f1388e5e10fe3fa0849-7ff3},
>>> envelope object is
>>> [EMAIL
>>> PROTECTED],ModificationState=org.apache.ojb.odmg.states.StateOldClean]
>>>
>>>
>>> We are using obj 1.0.4 odmg api with mysql db.Attached is the
>>> repository_user.xml
>>> http://www.nabble.com/file/5190/repository_user.xml repository_user.xml
>>>
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
>
--
View this message in context:
http://www.nabble.com/Inheritence-delete-exception-tf2909729.html#a8187399
Sent from the Apache DB - ObjectRelationalBridge Users mailing list archive at
Nabble.com.
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
