Antonin Stefanutti created OWB-1004:
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Summary: 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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