[cdi-dev] [JBoss JIRA] (CDI-475) Support type annotation in assignability of parameterized types

[Antonin Stefanutti (JIRA)]

Antonin Stefanutti created CDI-475:
--------------------------------------

             Summary: Support type annotation in assignability of parameterized types
                 Key: CDI-475
                 URL: https://issues.jboss.org/browse/CDI-475
             Project: CDI Specification Issues
          Issue Type: Feature Request
          Components: Resolution
            Reporter: Antonin Stefanutti


Since Java 8 provides support for type annotations, the assignability of parameterized types rules could be updated to support that feature that may add value in a number of use cases.

For example, with lifecycle events resolution, instead of writing:
{code}
Set<Annotation> contextNames = new HashSet<>();

void camelContextNames(@Observes ProcessAnnotatedType<? extends CamelContext> pat) {
    if (pat.getAnnotatedType().isAnnotationPresent(ContextName.class))
        contextNames.add(pat.getAnnotatedType().getAnnotation(ContextName.class));
}
{code}
One could directly write:
{code}
void camelContextNames(@Observes ProcessAnnotatedType<@ContextName ? extends CamelContext> pat) {
    contextNames.add(pat.getAnnotatedType().getAnnotation(ContextName.class));
}
{code}



--
This message was sent by Atlassian JIRA
(v6.3.1#6329)