[ https://issues.jboss.org/browse/WFLY-2727?page=com.atlassian.jira.plugin.... ] arjan tijms commented on WFLY-2727: ----------------------------------- {quote}Note that we implemented an extension in Hibernate to allow the persistence unit to be created in two phases. When/if the extension is standardized as part of some future JPA spec release, hopefully we will have all persistence providers (in their new releases) implementing it.{quote} Maybe I don't fully understand, but since Hibernate is used by WildFly and part of the JBoss community, what is stopping things from working out of the box now? Or is the extension you mention for a version of Hibernate newer than what WildFly is currently using? {quote}to reflect that you cannot use both CDI-JPA features and @DataSourceDefinition from the same application.{quote} Okay, so that's indeed more clear. But practically speaking there's also the issue now that users have to add the above mentioned property, isn't there? Since {{@DataSourceDefinition}} is largely an ease-of-use feature, this may be a bit problematic for exactly those users who are the intended target. If the issue can't be solved otherwise for the short term, would it be an option to provide a hint to the user when logging the error that this property needs to be set? {quote}Regarding the comment on JAVAEE_SPEC-30 about vendors not wanting to support @DataSourceDefinition.{quote} Well the comment wasn't so much about vendors not wanting to support it (for whatever reason), but more that I got the impression that some of them were genuinely surprised that such data source also had to work with JPA. The spec only talks about injecting it via {{@Resource}}, so there may be some room for clarification there. There is at least 1 vendor if I'm not mistaken who seems to be against any kind of administered object inside an archive (including JMS destinations, email sessions, JASPIC security modules, data sources and what have you), but that's an entirely different story ;) {quote} If we add a standardized two-phase persistence unit bootstrap that doesn't use the Datasource or CDI beanmanager until the second PU boot phase, we will see fewer integration problems between the different technologies (CDI/@DataSourceDefinitiion) and JPA. {quote} This sounds like a very important improvement indeed and certainly worth it to create a JIRA issue on the JPA tracker for. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira