Hi!
OK, my problem was not related to optimistic locking, but to data
freshness. EO was getting the data from the cached raw data (I think)
and not from the DB. Using the context.setFetchTimestamp
( System.currentTimeInMillis() ) did the trick.
Yours
Miguel Arroz
On 2007/06/01, at 16:08, Miguel Arroz wrote:
Hi!
I'm having some problems related to refaulting objects due to
optimistic locking failures.
I have this situation where I update two objects, and some fields
of those objects are "optimistic locking enabled". I know that if I
get a failure, when saving, related to one object, the other will
probably generate a new exception as well, so I refault both.
Basically, I have this:
int tries = 0;
SomeClass object1;
OtherClass object2;
while( tries < MAX_TRIES ) {
updateObject1( object1 );
updateObject2( object2 );
try {
Util.sleep(5); // Testing this thing
editingContext.saveChanges();
return true;
} catch (EOGeneralAdaptorException saveException) {
NSLog.out.appendln("Optimistic locking failure");
++tries;
if( Util.isOptimisticLockingFailure(saveException) ) {
EOEnterpriseObject object =
Util.handleOptimisticLockingFailureByRefaulting( saveException,
respondent.editingContext() );
if( object == object1 || object == object2) {
editingContext.refaultObject( object1 );
editingContext.refaultObject( object2 );
} else {
throw new RuntimeException("An unexpected
object caused an optimistic locking failure.");
}
} else {
throw saveException;
}
}
}
return false;
The problem is that only object1 is refaulted! I was consulting
the PSQL log, and there is a SELECT statement to get object1 back
from the DB, but nothing happens related to object2. And naturally,
when I try to save again, I will get a new exception, over and
over, because object2 is not being refaulted.
I don't know it that helps, but object1 has a to-one relationship
to object2.
Any idea of what might be causing this? What does EXACTLY
refaultObject do?
Yours
Miguel Arroz
Miguel Arroz
http://www.terminalapp.net
http://www.ipragma.com
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Miguel Arroz
http://www.terminalapp.net
http://www.ipragma.com
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