programmatic interceptor bindings in @BuildStep

[William Burke]

I want to add an interceptor to a bean class without defining a @InterceptorBinding.  Is this possible?  I'm searching right now and can't seem to find an example.

--

Bill Burke

IBM

[William Burke]

Alternatively, a way to associate an interceptor an InterceptorBinding

I'm defining a custom scope annotation @InvocationScoped that I want to also trigger adding an interceptor to the bean class, but I want this interceptor to be a @Singleton.

@Interceptor

@Singleton

@InvocationScoped

@Priority(Interceptor.Priority.PLATFORM_BEFORE + 100)

public class InvocationScopeInterceptor {

@NormalScope

@Inherited

@Retention(RetentionPolicy.RUNTIME)

@Target({ElementType.TYPE})

@InterceptorBinding

public @interface InvocationScoped {

}

 

--

Bill Burke

IBM

[Ladislav Thon]

út 17. 3. 2026 v 21:42 odesílatel 'William Burke' via Quarkus Development mailing list <quark...@googlegroups.com> napsal:

I want to add an interceptor to a bean class without defining a @InterceptorBinding.  Is this possible?  I'm searching right now and can't seem to find an example.

You can do all kinds of things like this using an annotation transformation. Look for `AnnotationsTransformerBuildItem` -- there are [at least] two, you want the ArC's one. The transformation basically goes like: if the target declaration is a class that has a given scope annotation, add an interceptor binding annotation.

LT

 

--

Bill Burke

IBM

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[Martin Kouba]

On 3/17/26 21:58, 'William Burke' via Quarkus Development mailing list
wrote:

> Alternatively, a way to associate an interceptor an InterceptorBinding
>
> I'm defining a custom scope annotation @InvocationScoped that I want to
> also trigger adding an interceptor to the bean class, but I want this
> interceptor to be a @Singleton.

An interceptor is always @Dependent, i.e. "The lifecycle of an
interceptor instance is the same as that of the target instance with
which it is associated.". In other words, you can't make it @Singleton.

>
> @Interceptor
> @Singleton
> @InvocationScoped
> @Priority(Interceptor.Priority.PLATFORM_BEFORE+ 100)
> publicclassInvocationScopeInterceptor{

>
>
>
> @NormalScope
> @Inherited
> @Retention(RetentionPolicy.RUNTIME)
> @Target({ElementType.TYPE})
> @InterceptorBinding
> public@interfaceInvocationScoped{
>
> }
>
>
> On Tue, Mar 17, 2026 at 4:42 PM William Burke <bbu...@redhat.com
> <mailto:bbu...@redhat.com>> wrote:
>
> I want to add an interceptor to a bean class without defining
> a @InterceptorBinding.  Is this possible?  I'm searching right now
> and can't seem to find an example.
>
> --
> Bill Burke
> IBM
>
>
>
> --
> Bill Burke
> IBM
>

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[William Burke]

On Wed, Mar 18, 2026 at 3:05 AM 'Martin Kouba' via Quarkus Development mailing list <quark...@googlegroups.com> wrote:

On 3/17/26 21:58, 'William Burke' via Quarkus Development mailing list
wrote:
> Alternatively, a way to associate an interceptor an InterceptorBinding
>
> I'm defining a custom scope annotation @InvocationScoped that I want to
> also trigger adding an interceptor to the bean class, but I want this
> interceptor to be a @Singleton.

An interceptor is always @Dependent, i.e. "The lifecycle of an
interceptor instance is the same as that of the target instance with
which it is associated.". In other words, you can't make it @Singleton.

Gemini lies!!  Told me it was @Dependent by default.

How does @ActivateRequestContext work then if it is dependent? Or can you only use that annotation on larger scoped beans like session and applicationscoped?

@RequestScoped

@ActivateRequestContext

public class My Bean {

}

--

Bill Burke

IBM

[Martin Kouba]

On 3/18/26 14:03, 'William Burke' via Quarkus Development mailing list
wrote:
>
>

> On Wed, Mar 18, 2026 at 3:05 AM 'Martin Kouba' via Quarkus Development

> mailing list <quark...@googlegroups.com <mailto:quarkus-

> d...@googlegroups.com>> wrote:
>
> On 3/17/26 21:58, 'William Burke' via Quarkus Development mailing list
> wrote:
> > Alternatively, a way to associate an interceptor an
> InterceptorBinding
> >
> > I'm defining a custom scope annotation @InvocationScoped that I
> want to
> > also trigger adding an interceptor to the bean class, but I want
> this
> > interceptor to be a @Singleton.
>
> An interceptor is always @Dependent, i.e. "The lifecycle of an
> interceptor instance is the same as that of the target instance with
> which it is associated.". In other words, you can't make it @Singleton.
>
>
> Gemini lies!!  Told me it was @Dependent by default.

Oh yes, these things sometimes lie you know ;-)

I tried Claude Heiku 4.5 and it got it almost right, except that it
claimed that it's a hard requirement in the spec.

In fact, the spec states:
"If an interceptor has any scope other than @Dependent, non-portable
behavior results." And non-portable behavior is bad, m'kay. And it won't
work in ArC.

>
> How does @ActivateRequestContext work then if it is dependent? Or can
> you only use that annotation on larger scoped beans like session and
> applicationscoped?

ActivateRequestContext is just a regular interceptor binding. If you
annotate a bean class, then the interceptor is used for all business
methods.

>
> @RequestScoped
> @ActivateRequestContext
> public class MyBean {
> }

Good question. I think that this should not work, because the
interceptor is associated with the MyBean contextual instance, and so
you need to lookup the contextual instance first.

In other words, you can do that but the ActivateRequestContext
interceptor will not help if the request context is not active when a
MyBean method is invoked.

>
>
> --
> Bill Burke
> IBM
>
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