Non-serializable objects

simoneg76 Oct 19, 2006 5:57 AM

Hi everybody,
i have a built-closed webapplication, which doesn't implements java.io.Serializable objects, and i can't modify it.

I need to cluster & balance this webapplication, so i modified web.xml puntting into tag.

But, when i try to run it, i got the exception of non-serializable object.

I can use JBoss to avoid this problem ? are there any settings of JBoss to put in session non-serializable objects and replicate them ?

thank you all

bye bye,
Simone

1. Re: Non-serializable objects

manik Oct 19, 2006 6:01 AM (in response to simoneg76)

Hi,

You could use FIELD-level replication, but you would need to instrument your classes using JBoss AOP. See

http://labs.jboss.com/file-access/default/members/jbosscache/freezone/docs/1.4.0/PojoCache/en/html/index.html

for more details.

Cheers,
Manik
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2. Re: Non-serializable objects

simoneg76 Oct 19, 2006 7:05 AM (in response to simoneg76)

Hi Manik,
thanks for reply

but problem is... i can't change classes source :-(

so...i can only hope in JBoss components configurations

any idea ?
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3. Re: Non-serializable objects

simoneg76 Oct 19, 2006 7:05 AM (in response to simoneg76)

Hi Manik,
thanks for reply

but problem is... i can't change classes source :-(

so...i can only hope in JBoss components configurations

any idea ?
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4. Re: Non-serializable objects

hmesha Oct 19, 2006 8:50 AM (in response to simoneg76)

You can create a wrapper class around the session object that intercept calls to setAttribute() and getAttribute() then using JBossSerialization serialize your objects before writing them to the session and deserialize them on return. Also, make sure that your wrapper class is thread safe so you won't get thread contention in there and would be a bottle neck in your application.
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