[Springframework-developer] TransactionProxyFactoryBean definitions in Petclinic

[<jue...@we...>]

FYI, I've modified the TransactionProxyFactoryBean definitions in =
Petclinic back to the simple direct version. The version with a =
"baseTransactionProxy" in case of a single transaction proxy arguably =
obscured the intent, at least in this simple sample =
application.Petclinic is meant to be as bare bones and trivial as =
possible, being useful as an example in introductory workshops that =
illustrate very basic principles of a Spring middle tier.
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On numerous occasions, I showed a Petclinic applicationContext.xml file =
without having explained parent/child bean definitions before. I always =
had to argue that this was using a parent bean definition here, but that =
this parent/child stuff wasn't important for our current discussion. My =
slides showed a direct TransactionProxyFactoryBean definition too.... =
I'm convinced now that it is better for the intended Petclinic audience =
to show the simple direct case.
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I've left the "baseTransactionProxy" separation in JPetStore, though, =
which is generally somewhat more sophisticated in its middle tier, with =
multiple fine-grained DAOs etc. IMO, it is sufficient to show the =
separation there; we don't need to build this into more than one sample =
application. A parent/child TransactionProxyFactoryBean definition is =
harder to understand than the simple direct case, after all, even it's =
recommended for advanced usages.
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Juergen