mvc-api Support sub-resource locators

I have a highly dynamic application which makes use of JAX-RS sub-resource locators. Unfortunately, those are not supported by default with MVC.

I could work around this limitation with a custom interceptor on my locator method (@ControllerLocator) which intercepts the result of the method and decorates the sub-resource with an InterceptionFactory to apply the interceptors needed for @Controller to work. This workaround depends on vendor-specific (krazo) classes like AroundController and ValidationInterceptorBinding. If the interceptors had been bound to @Controller (which could be turned into an InterceptorBinding via BeforeBeanDiscovery.addQualifier()) instead of specific annotations then it could have been implemented without relying on krazo classes.

Jul 01 '20 09:07 kalgon

Thanks for your feedback. We could try to implement the support for sub-resource locators in Krazo first. If we manage to implement this correctly (including all features like validation, CSRF protection, etc.) we could add the requirement to the spec as well.

@eclipse-ee4j/ee4j-mvc-committers Thoughts?

Jul 02 '20 05:07 chkal

Agree! This will also most likely be faster as we will do a 1.1 (first Jakarta MVC) release and then a 2.0 (javax-jakarta namespace switch) before adding functionality to the spec.

Jul 02 '20 05:07 ivargrimstad