[cdi-dev] [JBoss JIRA] (CDI-544) 10.2.3. The Event interface - provided executor cannot execute observers notification

[Antoine Sabot-Durand (JIRA)]

    [ https://issues.jboss.org/browse/CDI-544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13090124#comment-13090124 ] 

Antoine Sabot-Durand commented on CDI-544:
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It certainly could be clarified, but the idea here is to have a different exception if something happens inside event dispatcher and not observers (user code). For instance a user may provide a shut down executor that will not be able to run our async observer not because of their content. We have 2 options here:

# Expose the exception coming from the faulty executor, could be not very user friendly
# Wrap it in our own execption with our own error message. Perhaps {{IllegalArgumentException}} is not the best choice

> 10.2.3. The Event interface - provided executor cannot execute observers notification
> -------------------------------------------------------------------------------------
>
>                 Key: CDI-544
>                 URL: https://issues.jboss.org/browse/CDI-544
>             Project: CDI Specification Issues
>          Issue Type: Clarification
>            Reporter: Tomas Remes
>
> {quote}
> If the provided executor cannot execute observers notification, an IllegalArgumentException is thrown.
> {quote}
> What does it mean "cannot execute"? I am not really sure. Does it mean the observer throws an exception which should be wrapped in IAE? 
> This would likely contradict {{10.5.1. Handling multiple exceptions thrown during an asynchronous event}}.
> Maybe this sentence could be omitted. 



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