[wildfly-dev] Application shutdown code: recommended approach?

Hi, I recently created this BZ for EAP6.1: Bug 958217 - Unable to call Stateless bean methods from Singleton PreDestroy callback https://bugzilla.redhat.com/show_bug.cgi?id=958217 I though I could call any EJB bean from a @Singleton @PreDestroy method but, as Jaikiran pointed out, the @DependsOn annotation is needed to prevent dependencies from being shutdown before this last call. While it is doable to manually list a few dependencies, it is obviously not an option if your shutdown code virtually needs any of your EJB beans to be available: in RHQ, we want to be able to shutdown a Quartz scheduler gracefully, and the jobs running at shutdown might depend on any EJB bean. I though of adding a DeploymentUnitProcessor which would automatically make a "special" @Singleton bean (marked with an annotation) depend on all over beans in the RHQ deployment. What do you think? Thanks and regards, Thomas