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Posted to ojb-user@db.apache.org by Gunnar Hilling <ne...@hilling.de> on 2003/10/10 00:55:06 UTC
odmg/caching problem?
Hello,
I got the following small program (snippet):
Customer customer=new Customer("no", "one", "here", "0", "", 2, null);
tx = odmg.newTransaction();
tx.begin();
db.makePersistent(new Certificate("Z1\n", customer));
db.makePersistent(customer);
tx.commit();
DList allProducts = (DList) query.execute();
Iterator iter = allProducts.iterator();
while (iter.hasNext())
{
customer=(Customer)iter.next();
System.out.println(customer.getBenutzername() + ": " +
customer.getCertificates().size());
}
I think the Details don't matter: One Customer can have many Certificates
(1:n relationsship, navigatable in both directions here).
Now the Problem:
The Certificate created for the Customer is NOT listed in the first run of
the program, output:
1065740029439: 0
done!
When running the program for a second time, the records created in the
first run are read correctly, output this time:
1065740029439: 1
1065740078144: 0
done!
... and so on.
Anyone any clues?
Thanks a lot,
-Gunnar
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Re: odmg/caching problem?
Posted by Gunnar Hilling <ne...@hilling.de>.
Additional Detail:
Bothe the customer and the certificate are available when being created,
only the relation (Collection) of the newly created customer is not
updated when querying ...
> Hello,
>
> I got the following small program (snippet):
>
> Customer customer=new Customer("no", "one", "here", "0", "", 2, null);
> tx = odmg.newTransaction();
> tx.begin();
> db.makePersistent(new Certificate("Z1\n", customer));
> db.makePersistent(customer);
> tx.commit();
>
> DList allProducts = (DList) query.execute();
> Iterator iter = allProducts.iterator();
> while (iter.hasNext())
> {
> customer=(Customer)iter.next();
> System.out.println(customer.getBenutzername() + ": " +
> customer.getCertificates().size());
> }
>
> I think the Details don't matter: One Customer can have many Certificates
> (1:n relationsship, navigatable in both directions here).
>
> Now the Problem:
>
> The Certificate created for the Customer is NOT listed in the first run of
> the program, output:
>
> 1065740029439: 0
> done!
>
> When running the program for a second time, the records created in the
> first run are read correctly, output this time:
>
> 1065740029439: 1
> 1065740078144: 0
> done!
>
> ... and so on.
> Anyone any clues?
>
> Thanks a lot,
>
> -Gunnar
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