[cdi-dev] [JBoss JIRA] (CDI-291) Clarify interceptor/decorator resolution rules

Pete Muir (JIRA) jira-events at lists.jboss.org
Fri Feb 15 10:36:58 EST 2013

     [ https://issues.jboss.org/browse/CDI-291?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pete Muir updated CDI-291:

    Fix Version/s: 1.1.PFD
                       (was: 1.1 (Proposed))

> Clarify interceptor/decorator resolution rules
> ----------------------------------------------
>                 Key: CDI-291
>                 URL: https://issues.jboss.org/browse/CDI-291
>             Project: CDI Specification Issues
>          Issue Type: Clarification
>          Components: Decorators, Interceptors
>    Affects Versions: 1.0
>            Reporter: Jozef Hartinger
>            Assignee: Pete Muir
>             Fix For: 1.1.PFD
> Currently the spec only says:
> {quote}
>  A decorator is bound to a bean if:
> * The bean is assignable to the delegate injection point according to the rules defined in Section 5.2, "Typesafe resolu-
> tion" (using Section 8.3.1, "Assignability of raw and parameterized types for delegate injection points").
> * The decorator is enabled in the bean archive containing the bean.
> {quote}
> {quote}
> An interceptor is bound to a method if:
> * The method has all the interceptor bindings of the interceptor. A method has an interceptor binding of an interceptor if
> it has an interceptor binding with (a) the same type and (b) the same annotation member value for each member which
> is not annotated @javax.enterprise.util.Nonbinding.
> * The interceptor intercepts the given kind of lifecycle callback or business method.
> * The interceptor is enabled in the bean archive containing the bean.
> {quote}
> What remains unspecified is:
> * In a scenario where a module A enables interceptor X in its beans.xml, does X have to be accessible from A. That effectively means that an EJB jar could (or could not) legally use an interceptor/decorator packaged in a web application.
> * Even if X is accessible, does it have to be packaged in a bean archive or is it enough for it to be packaged in a library that does not contain beans.xml but is accessible from A? This means that a CDI implementation would need to additionally scan those classes as they would not be scanned by normal bean archive discovery.

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