Not particularly. I was interested in what this method does, what its legal inputs are, what its error conditions are, etc. (its contract). It implies one thing but does something else or at least does so for certain inputs (which inputs?). I’d like to either change the vague description of what it does, or change the implementation to somehow match the description (I doubt this is desired or possible). It sounds like this method’s contract is what it does (POSIWID;
https://en.wikipedia.org/wiki/The_purpose_of_a_system_is_what_it_does
) so maybe its contract could be updated.

On Tue, Aug 20, 2024 at 4:52 AM Matej Novotny <manovotn@redhat.com> wrote:
Hello

I cannot offer you better definition than what's there plus going through the code/tests that make some assertions.
I suppose you have a specific case/test in mind that doesn't match expectations? That would be a good starting point for a discussion.
One contested point I can recall from the top of my head was around indirect supertypes of a raw type[1][2] but I am not sure that's what you're aiming for.

Matej
___________________________________________________________
[1] WARNING: Very long read :) https://github.com/jakartaee/cdi-tck/issues/429
[2] https://bugs.openjdk.org/browse/JDK-8044366

On Fri, Aug 16, 2024 at 12:58 AM Laird Nelson <ljnelson@gmail.com> wrote:
org.jboss.weld.util.reflection.HierarchyDiscovery's documentation reads, in part:

"Utility class that discovers [the] transitive type closure of a given type."

This public class is underspecified. I'd like to pin down exactly how it is underspecified and hopefully help its specification match its actual behavior, or vice versa. 

My main question is: what is the definition of a "transitive type closure" (according to this class)?

(Based on the observed behavior of the class, it is not the "reflexive and transitive closure over the direct supertype relation" (JLS 4.10).)

Best,
Laird
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