strange invalid data problem

idocoding Jul 8, 2004 8:52 AM

hi folks,

i have a ejb application (http://www.molimo.de) running under jboss 3.2.4. after deployment everything works fine. after some time (maybe 10 user sessions) - the local CMP beans return invalid data.
i changed the databases - same result.
i tried it with and without cache invalidation - also same result.
i can trace down the problem to the field getter of one of the local beans - sometimes it returns different values (altough the value in the database never changes).
could it be, that there is a problem with the transaction descriptor?
i set all methods of the local beans to mandatory and the session beans to required, so they should start a new transaction if no one exists.
Any hint? sorry, if the problem description is a bit inaccurate - i hope someone can help me anyway. The whole source of the application is available under the web site above (GPL) and if the origin of the problem depends on jboss i am willing to help also.

thanks,

marcus

1. Re: strange invalid data problem

aloubyansky Jul 9, 2004 5:11 AM (in response to idocoding)

Any modifications of read-only fields/instances?
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2. Re: strange invalid data problem

idocoding Jul 9, 2004 10:49 AM (in response to idocoding)

thanks for reply.
no non-standard modifications besides the ones told. you may download the descriptors of the server side under:
http://www.molimo.de/intern/server.zip
thanks,
marcus
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3. Re: strange invalid data problem

idocoding Jul 14, 2004 10:58 AM (in response to idocoding)

looks like i found the problem (of course my guilt - not the one of jboss). it seems like i expected at one point the state of an transient field of an entity bean to be null after activation - this seemed to work after ejbCreate(), but not after ejbActivate(). I am still testing, but it makes seens that that could be the problem.
so a hint: set your transient fields to null in ejbActivate() ;-) otherwise you have a problem hard to find.
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