[jira] [Closed] (TINKERPOP-2853) Gremlin.Net driver should throw better exception message for unsupported GraphBinary type

["Valentyn Kahamlyk (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TINKERPOP-2853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Valentyn Kahamlyk closed TINKERPOP-2853.
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    Resolution: Fixed

> Gremlin.Net driver should throw better exception message for unsupported GraphBinary type
> -----------------------------------------------------------------------------------------
>
>                 Key: TINKERPOP-2853
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-2853
>             Project: TinkerPop
>          Issue Type: Improvement
>          Components: dotnet
>    Affects Versions: 3.6.1, 3.5.4
>            Reporter: Florian Hockmann
>            Priority: Minor
>
> The driver currently throws an exception that isn't very telling:
> {code:java}
> System.Collections.Generic.KeyNotFoundException : The given key 'janusgraph.RelationIdentifier' was not present in the dictionary. {code}
> It would be good if it would instead clearly state that no serializer was found for the GraphBinary type. This was first reported [on the janusgraph-users list|https://lists.lfaidata.foundation/g/janusgraph-users/message/6673].
> The exception gets thrown [here|https://github.com/apache/tinkerpop/blob/60b2792d63604b3baec68201adf35ed7f1d1e558/gremlin-dotnet/src/Gremlin.Net/Structure/IO/GraphBinary/TypeSerializerRegistry.cs#L282] for types received from the server where no serializer is registered for the driver.
> For the write path however, the exception thrown [is already more telling|https://github.com/apache/tinkerpop/blob/60b2792d63604b3baec68201adf35ed7f1d1e558/gremlin-dotnet/src/Gremlin.Net/Structure/IO/GraphBinary/TypeSerializerRegistry.cs#L224].



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