[castor-dev] problem when deleting an Object

[marco mistroni]

hi all,        i am using Castor JDO (version 0.9.5.2) and i have written a class (named CastorEntry) which implements the interface Persistent and TimeStampable.   as part of my junit test, i am creating an object, then i am querying the database to see if the# object is there, and if it is there i delete it.   the three operations are done in different transaction (because i am doing thru different operations in a BusinessDelegate),   so, i have no problem in creating, no problem querying but when i try to delete the object found from the query i get this exception   org.exolab.castor.jdo.ObjectNotPersistentException: The object of type com.myapp .castor.CastorEntry is not persistent -- it was not queried or created within th is transaction   the table entries (associated with the object CastorEntry) has no timestamp column.. i tried to add a colum called timestamp, but since i am using mysql there is no 'long' type, so only choice was to add a colum of type timestamp.. but when i define the  mapping, the long to timestamp is not accepted..   can anyone help me in solving my problem?   with best regards     marco