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  1. CDI Specification Issues
  2. CDI-271

Provide a way to inject Event metadata into an observer method

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Details

    • Feature Request
    • Resolution: Done
    • Major
    • 1.1.PFD
    • None
    • Events
    • None

    Description

      Currently there is no way for observer methods to access the qualifiers of the fired event (i.e. to access @Nonbinding members).
      Consider the following example:

      @Inject @MyQualifier
Event<MyObject> event;

public void fireEvent(MyObject object, MyTypeValue type) {
    event.select(new MyTypeAnnotationLiteral(type)).fire(object);
}

      Currently no observer can receive the value of MyTypeValue. I suggest to introduce an interface AnnotatedEvent that extends Annotated and contains this information. It then could be injected via the InjectionPoint like this:

      public void observeEvent(@Observes @MyType MyObject object, InjectionPoint ip) {
    MyType annotation = ip.getAnnotated().getAnnotation(MyType.class);
    MyTypeValue value = annotation.value();
    ...
}

      Attachments

        Issue Links

          blocks

          Clarification - A clarification needed to a specification based on community feedback CDI-324 Update InjectionPoint getBean() and isTransient() methods description to reflect Event instance

          • Minor - To be worked after urgent, high, and medium priorities are resolved. This term is chosen when the severity of the issue is low, or the complexity or effort to correct it may be higher, relatively speaking. For low priority issues, known workarounds exist or are not needed due to the trivial effort needed to address the issue.
          • Closed
          is related to

          Feature Request - Feature requests from customers and/or users CDI-20 @Observes(propagate = false) - stop event propagation after being handled by an observer

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed

          Feature Request - Feature requests from customers and/or users CDI-36 ObserverMethod.notify() does not forward qualifiers for Event

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          relates to

          Clarification - A clarification needed to a specification based on community feedback CDI-323 Specify what happens when a bean, that has an injection point of type InjectionPoint, is created via BeanManager#getReference(...)

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed

          Activity

            People

              arnelim Arne Limburg (Inactive)
              arnelim Arne Limburg (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: