[weld-issues] [JBoss JIRA] (WELD-996) ClassCastException validating custom Interceptor implementation

[Jozef Hartinger (Commented) (JIRA)]

    [ https://issues.jboss.org/browse/WELD-996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638526#comment-12638526 ] 

Jozef Hartinger commented on WELD-996:
--------------------------------------

My understanding is that if an extension-provided Interceptor implementation (e.g. CustomInterceptorImpl) is registered, Weld should recognize it to be passivation capable if and only if CustomInterceptorImpl implements the PassivationCapable interface. That should be the only indicator and we should not check the underlying class CustomInterceptorImpl may be using. Otherwise, that would go against the abstraction the SPI provides.
                
> ClassCastException validating custom Interceptor implementation
> ---------------------------------------------------------------
>
>                 Key: WELD-996
>                 URL: https://issues.jboss.org/browse/WELD-996
>             Project: Weld
>          Issue Type: Bug
>    Affects Versions: 1.1.2.Final
>            Reporter: Jozef Hartinger
>            Assignee: Jozef Hartinger
>            Priority: Critical
>             Fix For: 1.2.0.Beta1
>
>
> Having a custom implementation of the Interceptor interface registered with Weld, the validation always fails if the interceptor happens to intercept a passivation capable bean. Weld incorrectly casts the interceptor to InterceptorImpl which is not valid for extension-provided interceptors.
> {noformat}
> java.lang.ClassCastException: org.jboss.seam.classic.intercept.ClassicInterceptor cannot be cast to org.jboss.weld.bean.InterceptorImpl
>         at org.jboss.as.weld.services.WeldService.start(WeldService.java:96)
>         at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1824) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
>         at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1759) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_24]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_24]
>         at java.lang.Thread.run(Thread.java:662) [:1.6.0_24]
> Caused by: java.lang.ClassCastException: org.jboss.seam.classic.intercept.ClassicInterceptor cannot be cast to org.jboss.weld.bean.InterceptorImpl
>         at org.jboss.weld.bootstrap.Validator.validateInterceptors(Validator.java:171)
>         at org.jboss.weld.bootstrap.Validator.validateRIBean(Validator.java:151)
>         at org.jboss.weld.bootstrap.Validator.validateBeans(Validator.java:351)
>         at org.jboss.weld.bootstrap.Validator.validateDeployment(Validator.java:336)
>         at org.jboss.weld.bootstrap.WeldBootstrap.validateBeans(WeldBootstrap.java:404)
>         at org.jboss.as.weld.WeldContainer.start(WeldContainer.java:82)
>         at org.jboss.as.weld.services.WeldService.start(WeldService.java:89)
>         ... 5 more
> {noformat}

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