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From: Todor Boev <rinsvind(a)gmail.com>
Sent: Monday, September 4, 2017 11:03 AM
To: Xavier Dury
Subject: Re: [cdi-dev] Attributes on scope annotations
I did expect BeanManager.getScope() to return an annotation instance, when implementing my
scope.
Similarly to JSF my use case that the type of applications I need to support do not have
such a specific execution flow as to allow me to define a singleton scope. Instead the
users must be able to define the scope at a particular place in the execution flow. My
workaround is to require that the users create a new scope annotation for each such scope
and meta-annotate it with the data consumed by my extension. Then they can use their
custom annotation for their custom scoped classes. This is however inconvenient for the
most common case of a single custom-scoped class.
Given however attributes on scopes are used in JSF should I open an issue for the CDI spec
to support this use case?
Regards
On Sat, Sep 2, 2017 at 1:08 PM, Xavier Dury <kalgon(a)hotmail.com> wrote:
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/BeanManag...
From: cdi-dev-bounces(a)lists.jboss.org <cdi-dev-bounces(a)lists.jboss.org> on behalf of
Matej Novotny <manovotn(a)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(a)gmail.com>
To: "Matej Novotny" <manovotn(a)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(a)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(a)gmail.com>
> > To: cdi-dev(a)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(a)lists.jboss.org
> >
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