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https://issues.apache.org/jira/browse/PROTON-775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14309067#comment-14309067
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Dominic Evans commented on PROTON-775:
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[~mcpierce] do you have any thoughts of how we might be able to fix this?

> ruby: message annotations send from a ruby client are invalid
> -------------------------------------------------------------
>
>                 Key: PROTON-775
>                 URL: https://issues.apache.org/jira/browse/PROTON-775
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: ruby-binding
>    Affects Versions: 0.8
>            Reporter: Dominic Evans
>
> Since PROTON-616, proton-j has attempted to enforce the fact that the key's 
> of a message annotations map *must* be of the Symbol type (or actually ulong, 
> but those are reserved so we don't need to worry about that) [1]
> Unfortunately, from the Ruby client, the mapping of a native map into proton 
> data always sets the key's as strings rather than symbols.
> In proton-j, you'll currently hit a `java.lang.ClassCastException: 
> java.lang.String incompatible with org.apache.qpid.proton.amqp.Symbol` if you 
> try to look at keys of the MessageAnnotations object of a message sent from 
> the ruby send.rb example (which sets message annotations for the keys 
> 'version' and 'pill').
> -- 
> [1] 
> http://docs.oasis-open.org/amqp/core/v1.0/os/amqp-core-messaging-v1.0-os.html#type-annotations
>    



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