As we will deal with data stores not supporting transactions we should not activate transactions by default. For persistence technologies providing transaction support there's TransactionalRepositoryFactoryBeanSupport now, which pretty much contains the functionality that formerly resided in RFBS.
Note this required changes in the namespace as well. Concrete persistence technology specific namespaces now have to choose between repository-attributes or transactional-repository-attributes attribute group whereas the latter contains the transaction-manager-ref attribute.
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