[cdi-dev] Attributes on scope annotations

[Xavier Dury]

JSF [1] and Omnifaces [2] are doing it but it's against the spec.

If this was allowed, I suppose BeanManager.getContext() [3] would have taken an annotation parameter instead of an annotation type.

Xavier

----

[1] http://docs.oracle.com/javaee/7/api/javax/faces/flow/FlowScoped.html
[2] http://omnifaces.org/docs/javadoc/2.6/org/omnifaces/cdi/ViewScoped.html
[3] http://docs.oracle.com/javaee/7/api/javax/enterprise/inject/spi/BeanManager.html#getContext-java.lang.Class-


From: cdi-dev-bounces at lists.jboss.org <cdi-dev-bounces at lists.jboss.org> on behalf of Matej Novotny <manovotn at redhat.com>
Sent: Friday, September 1, 2017 1:43 PM
To: Todor Boev
Cc: cdi-dev
Subject: Re: [cdi-dev] Attributes on scope annotations
    
Let's keep this conversation on CDI-dev list, please (adding back to CC).

Hmm, I think it is not forbidden to add another plain java annotation.
However, having it working as scope and cdi qualifier in the same time won't work.

Matej

----- Original Message -----
> From: "Todor Boev" <rinsvind at gmail.com>
> To: "Matej Novotny" <manovotn at redhat.com>
> Sent: Friday, September 1, 2017 12:33:54 PM
> Subject: Re: [cdi-dev] Attributes on scope annotations
> 
> Thank you for the timely replay,
> 
> I need portable behavior, so the other option I am considering is to
> meta-annotate the scope annotation with the additional information I need.
> The issues are now: is this allowed, can in principle my custom
> meta-annotation be a qualifier. Probably a plain annotation will be
> sufficient, but I may need to have it do double-duty as a qualifier as well.
> 
> Thanks in advance,
> Todor
> 
> On Fri, Sep 1, 2017 at 11:49 AM, Matej Novotny <manovotn at redhat.com> wrote:
> 
> > Hello Todor,
> >
> > From CDI specification 2.0 section 2.4.2 Defining new scopes[1]:
> >
> > "A scope type must not have any attributes. If a scope type has attributes
> > non-portable behavior results."
> >
> > Matej
> >
> > ____________________________________________________________
> > _______________-
> > [1] http://docs.jboss.org/cdi/spec/2.0/cdi-spec.html#


JSR 365: Contexts and Dependency Injection for Java 2.0
docs.jboss.org
Starting with version 2.0 CDI targets Java SE and Java EE platforms. CDI in Java SE and CDI in a Java EE container share the features defined in core CDI.

> > defining_new_scope_type
> >
> >
> >
> > ----- Original Message -----
> > > From: "Todor Boev" <rinsvind at gmail.com>
> > > To: cdi-dev at lists.jboss.org
> > > Sent: Friday, September 1, 2017 9:51:47 AM
> > > Subject: [cdi-dev] Attributes on scope annotations
> > >
> > > Hello,
> > >
> > > Is it against the CDI 2.0 specification to have attributes on a scope
> > > annotation? If not is this a corner case that may become forbidden or
> > simply
> > > not be taken into account in future versions of the specification?
> > >
> > > E.g. @ComponentScoped("my-component")
> > >
> > > With Weld 3.0.0 I was able to successfully use such annotations.
> > >
> > > Regards,
> > > Todor
> > >
> > >
> > > _______________________________________________
> > > cdi-dev mailing list
> > > cdi-dev at lists.jboss.org
> > > https://lists.jboss.org/mailman/listinfo/cdi-dev


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> > >
> > > Note that for all code provided on this list, the provider licenses the
> > code
> > > under the Apache License, Version 2
> > > (http://www.apache.org/licenses/LICENSE-2.0.html). For all other ideas


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Note that for all code provided on this list, the provider licenses the code under the Apache License, Version 2 (http://www.apache.org/licenses/LICENSE-2.0.html). For all other ideas provided on  this list, the provider waives all patent and other intellectual property rights inherent in such information.