It's not your fault, your code is correct - it's a bug in OJB. Better to
say: it was forgotten to implement the getPBKey() and setPBKey methods
in org.apache.ojb.broker.server.PersistenceBrokerClient.
I found this out about one week ago and I fixed it. I'm sorry that I
didn't announce this earlier and publish my patch here, but I I'm under
strong pressure to finish my works. Moreover I resigned from using the
OJB C/S mode after I ran some tests in the C/S mode. The result was very
disappointing. In the current C/S mode implementation OJB is horribly
slow. An example query on a table with lots of references to other
tables took far more than one minute!!! Additionally I couldn't run the
junit tests successfully in C/S mode - so I gave up on the C/S mode.
I'm currently working on a distributed solution with RMI. Although RMI
is also not a speed king the results were much better. The same query
takes me now just 10 seconds. I just have some problems by implementing
a remote observer to notify all clients of changes on a persistent object...
You might say now that 10 seconds is also slow but this was not only the
time of the query. In both cases I took the time which is was printed
out by the ant task for running my test client, so that means it
includes invocation of the java VM, jakarta-ant and the initialization
of my test client and initialization of OJB.
/olaf
But if you want to continue to play around with the C/S mode, you can
use my 'guerilla patch':
1) org.apache.ojb.broker.server.PersistenceBrokerClient:
Create a private variable for the pbKey and change the methods
getPBKey() and setPBKey():
private PBKey pbKey;
...
public PBKey getPBKey()
{
/*@todo implementation*/
//throw new UnsupportedOperationException("Not implemented!!");
return pbKey;
}
public void setPBKey(PBKey key)
{
/*@todo implementation*/
//throw new UnsupportedOperationException("Not implemented!!");
pbKey = key;
}
2) org.apache.ojb.odmg.DatabaseImpl:
Change the method open(), by adding a line which sets the pbKey.
ATTENTION: this does not work when the database is not named, ie.
name=null, when you open the database the first time.
if(name == null)
{
if(log.isDebugEnabled()) log.debug("name was null, open
default database");
broker =
PersistenceBrokerFactory.defaultPersistenceBroker();
pbKey = broker.getPBKey();
}
else
{
broker =
PersistenceBrokerFactory.createPersistenceBroker(extractAllTokens(name));
broker.setPBKey(extractAllTokens(name));
pbKey = broker.getPBKey();
}
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