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https://issues.apache.org/jira/browse/IGNITE-1645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14952885#comment-14952885
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Pavel  Tupitsyn commented on IGNITE-1645:
-----------------------------------------

* exceptions added in ReaderImpl and Future.OnNullvalue
* IgniteNullable<> added to handle nulls in Try* methods

> .Net: Throw exception on null flag in PortableReader when reading 
> non-nullable value types
> ------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-1645
>                 URL: https://issues.apache.org/jira/browse/IGNITE-1645
>             Project: Ignite
>          Issue Type: Task
>          Components: interop
>    Affects Versions: 1.5
>            Reporter: Pavel  Tupitsyn
>            Assignee: Vladimir Ozerov
>             Fix For: 1.5
>
>
> Currently we always return default(T) when deserializing null value. So for 
> value types there is no way  for the user to discern a missing cache key from 
> a cache key with default value.
> * throw exceptions when there is Null in stream and we are trying to read a 
> value type
> * update Cache API with Try* methods



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