Why do you think that the partner object should support OrganizationIF? It's
perfectly reasonable that it does not, for some configurations of data/classes.
Furthermore, if you load it using dynamic proxies, you've said I want to treat
this as a PartnerIF the fact that the real object behind the scenes might
implement a other interfaces is not relevant.
David
|---------+--------------------------->
| | Joerg Lensing |
| | <[EMAIL PROTECTED]|
| | nsing.de> |
| | |
| | 09/11/2003 09:02|
| | AM |
| | Please respond |
| | to "OJB Users |
| | List" |
| | |
|---------+--------------------------->
>--------------------------------------------------------------------------------------------------------------------------------------------------------------|
|
|
| To: OJB Users List <[EMAIL PROTECTED]>
|
| cc:
|
| Subject: dynamci Proxy: ClassCastException with Interfaces
|
|
|
>--------------------------------------------------------------------------------------------------------------------------------------------------------------|
hi all,
I'm using dynamic proxies for these classes
look at this Interface/class-hierarchy:
AbstractPersistentIF
|_PartnerIF
|_OrganisationIF
|_PersonIF
(PO: persistent/mapped objects)
AbstractPersistentPO
|_PartnerPO
|_OrganisationPO
|_PersonPO
if i query an organisation:
---- snip--------
public PartnerIF getPartnerByOID(int pOID,Transaction tx) {
// obtain a broker instance from the current transaction
HasBroker hasBroker = (HasBroker) tx;
PersistenceBroker broker = hasBroker.getBroker();
Criteria crit = new Criteria();
crit.addEqualTo("id", new Integer(pOID));
Query query = new QueryByCriteria(PartnerPO.class, crit);
PartnerIF partner = (PartnerIF)broker.getObjectByQuery(query);
if (broker.hasClassDescriptor(partner.getClass())) {
tx.lock(partner, org.odmg.Transaction.READ);
}
return partner;
}
----snip
if i test the implemented interfaces for the queried class
(-->partner.getClass().getIntefaces();), it doesn't show the right
implemented interface. The class shoud show OrganisationIF, but shows
PersonIF as being implemented by this class
who can help?
tx joerg
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