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https://issues.apache.org/jira/browse/IGNITE-1571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14940895#comment-14940895
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Pavel  Tupitsyn commented on IGNITE-1571:
-----------------------------------------

More investigation:
* Let's skip array methods for now (see above)
* There is a problem when user requests non-nullable DateTime/Guid and there is 
a HdrNull in the stream. We return default(T), which will be incorrect for 
non-nullable structs. Exception should be thrown in that case.

> .Net: Improve Guid and DateTime reader/writer interface.
> --------------------------------------------------------
>
>                 Key: IGNITE-1571
>                 URL: https://issues.apache.org/jira/browse/IGNITE-1571
>             Project: Ignite
>          Issue Type: Task
>          Components: interop
>    Affects Versions: ignite-1.4
>            Reporter: Vladimir Ozerov
>            Assignee: Pavel  Tupitsyn
>            Priority: Critical
>             Fix For: ignite-1.5
>
>
> Currently we force user to write Guid and DateTime as nullables. We do this 
> to be more compatible with Java.
> But user is more likely to operate on plain types: Guid, Guid[], DateTime, 
> DateTime[]. 
> We need to add these methods to API, and rename existing ones to 
> "ReadNullableDateTime", etc..
> Note that while trivial to on writer side, it will be harder to implement for 
> readers. Currently we lookup by type ID, which will be equal for the type and 
> it's nullable counterpart. For this reason we probably must lookup by type ID 
> + type or simply by type.



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