[weld-dev] Specializes bean in war causes unsatisfied resolution exception

Hello A customer of mine sent in a test application with the following structure: A war file inside ear Two jar files inside ear/lib One jar file inside ear/war/WEB-INF/lib There is a class inside one of the ear/lib jar files which @Injects a bean from the other ear/lib jar file And there is a class inside the ear/war/WEB-INF/lib jar file that @Specializes the bean inside an ear/lib jar file (You can see the application at was_bugs/was_bug22 at master · thikade/was_bugs · GitHub ) Attempting to run this application on Weld results in an Unsatisfied Resolution Exception. When I remove the jar containing the @Specializes bean the application works correctly. My first thought was that this application should not work, because the war file and it's internal jar would have a second classloader that would be invisible to the application classloader. However the customer attested, and I confirmed that this application works fine on OpenWebBeans. I do not think this is an integration issue, because I tested this on Wildfly and got the same error. So it seems that Weld throws an Unsatisfied Resolution Exception if @specializes exists in a class that is loaded by a classloader which is not visible . What do you think is the correct behaviour is in this instance? From a classloading perspective a class inside ear/lib should not be able to see a class inside ear/war; but on the other hand the entire purpose of a @Specializes bean is that you drop it into your application and it replaces the original bean. It feels appropriate that you can drop in a war file containing the @Specializes bean and it just works without you having to do anything extra. Best regards Benjamin Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU