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https://issues.apache.org/jira/browse/OWB-1004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14128735#comment-14128735
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Antonin Stefanutti commented on OWB-1004:
-----------------------------------------
Unfortunately, quoting ยง[Qualifier annotations with
members|http://docs.jboss.org/cdi/spec/1.2/cdi-spec.html#qualifier_annotation_members]
from the CDI specification:
{quote}
Array-valued or annotation-valued members of a qualifier type should be
annotated @Nonbinding in a portable application. If an array-valued or
annotation-valued member of a qualifier type is not annotated @Nonbinding,
non-portable behavior results.
{quote}
>From my understanding, the bean metadata that can be manipulated with the CDI
>SPI are more a logical abstraction than something physically coupled to the
>Java language in the sense that it does not percolate into the Java bytecode.
>That's more the other way around.
That being said, I understand that ideally there should be a 1 to 1 match.
Unfortunately the quote above just breaks it and I don't see any other way to
implement that approach (referred to as the second approach in my first
comment) which IMO is a lot more powerful and elegant than the first approach
in quite a number of use cases.
> Enable repeatable qualifiers with binding attributes
> ----------------------------------------------------
>
> Key: OWB-1004
> URL: https://issues.apache.org/jira/browse/OWB-1004
> Project: OpenWebBeans
> Issue Type: Improvement
> Components: Core
> Affects Versions: 2.0.0
> Reporter: Antonin Stefanutti
>
> While having multiple annotations of the same type declared on a member or
> type is not permitted in the Java language prior to Java 8, the CDI
> specification does not set any particular restriction in its SPI that enables
> to alter bean metadata, e.g. in {{Annotated.getAnnotations()}} and
> {{BeanAttributes.getQualifiers()}}, in a way to add multiple annotations of
> the same type.
> Having multiple CDI qualifiers of the same type can prove to be useful when
> this type declares binding attributes.
> Unfortunately, in such situation, the following exception is thrown by OWB
> version 2.0-SNASHOT:
> {code}
> javax.enterprise.inject.spi.DefinitionException:
> java.lang.IllegalArgumentException: Manager.resolveDecorators() method
> parameter qualifiers array argument can not define duplicate qualifier
> annotation with name : @org.apache.camel.cdi.ContextName
> at
> org.apache.webbeans.config.BeansDeployer.deploy(BeansDeployer.java:284)
> at
> org.apache.webbeans.lifecycle.AbstractLifeCycle.bootstrapApplication(AbstractLifeCycle.java:138)
> at
> org.apache.webbeans.lifecycle.AbstractLifeCycle.startApplication(AbstractLifeCycle.java:104)
> at
> org.apache.webbeans.arquillian.standalone.OwbStandaloneContainer.deploy(OwbStandaloneContainer.java:122)
> {code}
> IMO, preventing the ability to add multiple annotations of the same type via
> the CDI SPI restricts powerful use cases (I can share more details on these
> use cases if needed). Last but not least, having this ability built-in in the
> Java 8 language is another incentive to provide that support.
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