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From "Ayhan Kondoz" <Ayhan.Kon...@freenet-ag.de>
Subject refreshing of cached objects
Date Thu, 19 Apr 2007 15:29:11 GMT
Hi,

 

i have a problem with refreshing of cached objects.

 

I do something like this:

 

            SelectQuery query = new SelectQuery(de.freenet.cayenne.kontingent.Customer.class,
Expression.fromString("cid = " + cid));

            List list = context.performQuery(query);

 

            Customer customer = list.get(0);

            List accounts = c.getAccounts();

 

            Account a = accounts.get(0);

 

            a.setAmount(amount);

 

            context.commitChanges();

 

 

I am using Optimistic Locking on the Account Object and what I need to do is to catch the
OptimisticLockException which may be thrown and redo the steps again. So if the data of the
Account is changed within the database while I am using it I want to reload the customer and
all it's related objects and try again.

 

My problem is that after the OptimisticLockException is thrown the data within the Account
object is not reloaded from the database. I tried to use

            query.setRefreshingObject(true);

but still no changes. 

 

In the logging file I see that cayenne entries like this:

 

SELECT t0.cid, t0.last_updated, t0.login, t0.next_cycle_date, t0.rec_change, t0.rec_create,
t0.suspended, t0.id, t0.mandant_id FROM customer t0 WHERE t0.cid = ? [bind: 7]

SELECT t0.activation_date, t0.amount, t0.credit_limit, t0.expire_date, t0.next_cycle_date,
t0.rec_change, t0.rec_create, t0.account_type_id, t0.customer_id, t0.id, t0.unit_id FROM account
t0 WHERE t0.customer_id = ? [bind: 797380]

 

But the objects I get still contain the old data and I keep getting OptimisticLockExceptions.
How do I tell cayenne to reload the customer and all it's related object from the database???

 

I am using cayenne 1.2.1, with shared caching and JavaGroups.

 

Thanx

Ayhan Kondoz

 

 

Ayhan Kondoz

 

Software-Entwicklung

 

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