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https://issues.apache.org/jira/browse/JDO-751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15224000#comment-15224000
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Tilmann Zäschke commented on JDO-751:
-------------------------------------

I just realise that throwing an exception during enhancement probably won't be 
possible, because after type erasure, the field will simply be of type 
{{Optional}}. Chained {{Optional<Optional<?>>}} can only be detected during 
serilization.

Should we throw the Exception during serialization?

> Support for Java8 Optional
> --------------------------
>
>                 Key: JDO-751
>                 URL: https://issues.apache.org/jira/browse/JDO-751
>             Project: JDO
>          Issue Type: New Feature
>          Components: specification, tck
>            Reporter: Andy Jefferson
>
> java.util.Optional provides a feature that is available in other languages. 
> Since JDO 3.2 will be for Java8+ then it makes sense to add support for this 
> as a "supported persistable type"



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