Hi,
thanks for your answers to my previous question ("Performance..."). I got "a
bit" more confident that this project will finally succeed - thanks to JBoss
:)
Now we got a little problem, which I'm sure is a consequence of our
misunderstanding of some basic rules... When JBoss tries to passivate some
EJBs, we get the following exception:
[Container factory] java.rmi.ServerException: Could not passivate; nested
exception is:
[Container factory] java.io.NotSerializableException:
org.jboss.pool.jdbc.xa.XAPoolDataSource
[Container factory] java.io.NotSerializableException:
org.jboss.pool.jdbc.xa.XAPoolDataSource
[Container factory] at
java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1148)
[Container factory] at
java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366)
[Container factory] at
java.io.ObjectOutputStream.outputClassFields(ObjectOutputStream.java:1827)
[Container factory] at
java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:480)
[Container factory] at
java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1214)
[Container factory] at
java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:366)
[Container factory] at
org.jboss.ejb.plugins.StatefulSessionFilePersistenceManager.passivateSession
(StatefulSessionFilePersistenceManager.java:285)
[Container factory] at
org.jboss.ejb.plugins.StatefulSessionInstanceCache.passivate(StatefulSession
InstanceCache.java:67)
[Container factory] at
org.jboss.ejb.plugins.AbstractInstanceCache$1.execute(AbstractInstanceCache.
java:709)
[Container factory] at
org.jboss.util.WorkerQueue$QueueLoop.run(WorkerQueue.java:199)
[Container factory] at java.lang.Thread.run(Thread.java:484)
We - following the Petstore example - have a member variable of a
javax.sql.DataSource in each of our beans that will want to access the
database. In each method we ask for a connection from this datasource. Now
it's obvious that this object is not serializable. My question is how to
work this problem around? I mean if I ask for a DataSource in each method
(so that no such member variable exist) won't it slow down these methods a
lot (JNDI lookups...). Or is there any other ways to do it?
Thanks very much in advance.
Cheers,
Janos
Budapest, Hungary.
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