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  1. C# Driver
  2. CSHARP-4681

InvalidCastException when rendering projections

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    • Type: Icon: Improvement Improvement
    • Resolution: Fixed
    • Priority: Icon: Unknown Unknown
    • 2.21.0
    • Affects Version/s: 2.19.2
    • Component/s: None
    • None
    • Fully Compatible
    • Not Needed
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      1. What would you like to communicate to the user about this feature?
      2. Would you like the user to see examples of the syntax and/or executable code and its output?
      3. Which versions of the driver/connector does this apply to?

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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?

      Hi!

      After upgrading from 2.19.1 to 2.19.2, when rendering projection definitions (for debug logging) we sometimes encounter the following exception:

      Unable to find source-code formatter for language: csharp. Available languages are: actionscript, ada, applescript, bash, c, c#, c++, cpp, css, erlang, go, groovy, haskell, html, java, javascript, js, json, lua, none, nyan, objc, perl, php, python, r, rainbow, ruby, scala, sh, sql, swift, visualbasic, xml, yaml
      System.InvalidCastException: Unable to cast object of type 'MongoDB.Bson.BsonString' to type 'MongoDB.Bson.BsonDocument'.
BsonDocument MongoDB.Driver.Linq.Linq2Implementation.Translators.AggregateProjectTranslator.TranslateProject(Expression expression, ExpressionTranslationOptions translationOptions)
RenderedProjectionDefinition<TResult> MongoDB.Driver.Linq.Linq2Implementation.Translators.AggregateProjectTranslator.Translate<TDocument, TResult>(Expression<Func<TDocument, TResult>> projector, IBsonSerializer<TDocument> parameterSerializer, IBsonSerializerRegistry serializerRegistry, ExpressionTranslationOptions translationOptions)
RenderedProjectionDefinition<TOutput> MongoDB.Driver.ExpressionProjectionDefinition<TInput, TOutput>.Render(IBsonSerializer<TInput> inputSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)

      The projection itself is a single field selector: Project(d => d.Id).

            Assignee:
            oleksandr.poliakov@mongodb.com Oleksandr Poliakov
            Reporter:
            onyxmaster Aristarkh Zagorodnikov
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              Created:
              Updated:
              Resolved: