Transactions in the CDM Library¶
Information on transactions in the cdm. How transactions are configured and why they are configured in a specific way. Furthermore in future this page can contain also information on transaction boundaries and the like.
The default propagation strategy for service classes: Propagation.SUPPORTS vs Propagation.REQUIRED¶
In Forums and blocks the recommendation to set the propagation strategy to Propagation.SUPPORTS, this should increase the performance:
We tested the effect of setting propagation strategy to
Propagation.SUPPORTS and could not find a significant difference.
Propagation.SUPPORTS (past configuration)¶
Propagation.SUPPORTS as been set as default propagation strategy for all service classes:
@Transactional(readOnly = true, propagation = Propagation.SUPPORTS) class ...
This has been only introduced to prevent early commit in Spring Web-flow.
Propagation.REQUIRED (current configuration)¶
Propagation.SUPPORTS was causing problems with hibernate 4: Transactions where not started in some cases when using the services from the web service controllers or from the
LocaleContext class. So we switched back to
Propagation.REQUIRED with r17508.