[mdr-users] MDR in distributed enviroment

Hello MDR users,

Im working in a project which is using MDR for storing metadata and is
deployed in J2EE (JBoss) so that it can be accessed remotely.
The classes involved in the communication (which for that reason need to be
Serializable), have instances of some metadata classes created by MDR.
So the problem comes when I try to deploy the project and communicate with
it. So, one exception occur about some classes inside MDR which need to be
Serializable.

I tried to make all  the (inside) classes Serializable (or transient), but
then I have to make other classes Serializable as Well, for instance DB
Drivers, or java.lang.* ... 

I also tried with different storagemodels (JDBC, BTree, or memory), but the
same problem comes.

So.. any suggestions or walk-arounds? I included part of the client Side
exception trace.

Thanks in advance.


Client Side Exception Trace:

java.lang.reflect.UndeclaredThrowableException
	at $Proxy1.getConnection(Unknown Source)
……....
Caused by: java.io.NotSerializableException: java.lang.ref.WeakReference
	at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
	at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
…

the NotSerializable class is different depending the storageModel (BTree,
memory, JDBC) you use.




Santiago Gil Bohórquez
----------------------------------------
Estudiante de Ingeniería de Sistemas y Computación
Universidad de Los Andes
---------------------------------------
Teléfonos:
(+57) 310 800 1393
(+57 1) 2745263
---------------------------------------
E-Mails:
[email protected] 
[email protected]
[email protected]