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From Gianny Damour <>
Subject Re: access a BLOB coloumn from a CMP EJB
Date Sat, 30 Jul 2005 00:08:39 GMT
I was trying to find the root cause and I have added an integration test 
to test the storage of a byte[] into a BLOB (see 
org.openejb.test.entity.cmp2.StorageTests in OpenEJB itests). It seems 
that it works; at least for Derby.

BTW, by default a field having the type byte[] is automatically 
serialized, so one should not need to explicitly declare a 


On 30/07/2005 9:51 AM, Jeremy Boynes wrote:

> Stefan Schmidt wrote:
>> Jeremy,
>> That was one of the weired things here - there is no true root cause:
>> 08:42:29,134 WARN  [SystemExceptionInterceptor] BookBean
>> javax.transaction.TransactionRolledbackException: Unable to load data 
>> for field
>>    at 
>> org.openejb.transaction.ContainerPolicy$TxRequired.invoke(

> OpenEJB is dropping the root cause for some reason (claims it can't 
> initCause() and doesn't log the lost info). Please can you open a bug 
> for that as I think we'll lose diagnostic info for any problem 
> encountered by the persistence code.
> I'll try and reproduce and get the byte[] mapping working.
> -- 
> Jeremy

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