Hi Andrew,
think this is a ClassLoader problem. Maybe ojb.jar itself or one of the jars OJB depends on is not correctly reloaded.
Did you follow the instructions made by Stephen Ting
http://db.apache.org/ojb/docu/guides/deployment.html#Packing+an+.ear+file
regards, Armin
Clute, Andrew wrote:
I am running OJB 1.0 with JBoss 3.2.5.
On *occasional* redeployments of my EAR file (with nested Jars and Wars) I will get a nasty ClassCastException that is only fixable by restarting Jboss. This happens in the MetadataManager.buildDefaultKey() method.
The top part of the stack trace is posted below. From what I can tell,
the exception stems from not that it is the wrong class attempting to be
casted, but it is an instance of a class that is from a previous
deployment (and thus classloader) that is trying to be casted in to the
same class type in a new class loader.
I have taken a quick look at MetadataManager, and don't see anything terribly obvious as to the cause -- which I would assume is a static instance to the Collection of JdbcConnectionsDescriptors. There is a a ThreadLocal variable, but I don't think that is the cause.
So, my question is: has anyone else seen this? Can anyone think of why on a undeployment that not all of the OJB classes are removed from the VM?
Thanks!
Here is the stacktrace:
2004-08-11 13:24:22,923 ERROR [org.jboss.ejb.plugins.LogInterceptor] RuntimeException: java.lang.ClassCastException at org.apache.ojb.broker.metadata.MetadataManager.buildDefaultKey(Unknown Source) at org.apache.ojb.broker.metadata.MetadataManager.init(Unknown Source) at org.apache.ojb.broker.metadata.MetadataManager.<init>(Unknown Source) at org.apache.ojb.broker.metadata.MetadataManager.getInstance(Unknown Source) at org.apache.ojb.broker.core.PersistenceBrokerFactoryBaseImpl.getDefaultKe y(Unknown Source) at org.apache.ojb.broker.core.PersistenceBrokerFactoryBaseImpl.defaultPersi stenceBroker(Unknown Source) at org.apache.ojb.broker.PersistenceBrokerFactory.defaultPersistenceBroker( Unknown Source) at org.osn.persistence.PersistenceSessionPBImpl.getBroker(PersistenceSessio nPBImpl.java:79)
--------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
