[cdi-dev] CDI-30 - Creating a managed context

[John D. Ament]

All,

I have the flip side of this change available as well.

https://github.com/johnament/cdi/blob/6fbd7d834e11295a3a4490294cde0ad18bee6b33/api/src/test/java/org/jboss/cdi/api/test/ContextManagementExample.java

In this version, activation is done directly from BeanManager instead of
the secondary context object.  I'm also thinking with this commit that
ManagedContext should actually be "UnmanagedContext" to clarify that its
not being handled in the container.

John

PS - One of the use cases I put in the JIRA ticket was around quartz
integration.  This is what the resulting integration looks like

    public class CDIJobListener implements JobListener {

        public static final String CONTEXT_NAME =
"CDIJobListener.cdi_context";

        @Override
        public String getName() {
            return "cdi";
        }

        @Override
        public void jobToBeExecuted(JobExecutionContext
jobExecutionContext) {
            BeanManager beanManager = CDI.current().getBeanManager();
            ManagedContext requestContext =
beanManager.activateContext(RequestScoped.class);
            jobExecutionContext.getMergedJobDataMap().put(CONTEXT_NAME,
requestContext);
        }

        @Override
        public void jobExecutionVetoed(JobExecutionContext
jobExecutionContext) {
            ManagedContext managedContext =
(ManagedContext)jobExecutionContext.getMergedJobDataMap().get(CONTEXT_NAME);
            managedContext.deactivate();
        }

        @Override
        public void jobWasExecuted(JobExecutionContext jobExecutionContext,
JobExecutionException e) {
            jobExecutionVetoed(jobExecutionContext);
        }
    }

On Fri, Jun 24, 2016 at 5:28 PM John D. Ament <john.d.ament at gmail.com>
wrote:

> All,
>
> One of the discussion points from today was around where activation
> belongs.  I pushed up a branch with a rough example of what this might look
> like
>
>
> https://github.com/johnament/cdi/commit/f4cb91dca0eeb7edef5d4238f55ca413a0711e26
>
> One of my concerns with doing this is that to get a context object from
> the bean manager, it needs to be active.  This is in the javadocs: Obtains
> an active {@linkplain javax.enterprise.context.spi.Context context object}
> for the given.  If we change this, it risks breaking compatibility.
>
> Let me know your thoughts.
>
> John
>
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