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Type: Bug
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Resolution: Duplicate
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Priority: Minor - P4
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None
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Affects Version/s: 2.19.1
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Component/s: LINQ3
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None
Summary
The latest MongoDB.Driver for C# switched the default LINQ Provider from 2 to 3. After trying to upgrade and use version 3 the code that used to work in V2 fails in V3.
Server versions: 5.0.13 Windows and 5.0.10 Ubuntu
How to Reproduce
internal class Program { private static void Main(string[] args) { foreach (var linqProvider in new []\{ LinqProvider.V2, LinqProvider.V3}) { var builder = new MongoUrlBuilder { DatabaseName = "Sample", Server = new MongoServerAddress("localhost", 27017) }; var mongoClientSettings = MongoClientSettings.FromUrl(builder.ToMongoUrl()); mongoClientSettings.LinqProvider = linqProvider; var mongoClient = new MongoClient(mongoClientSettings); var mongoDatabase = mongoClient.GetDatabase(builder.DatabaseName); var licensePlate = "5555XXX"; var carCollection = mongoDatabase.GetCollection<Car>("Cars"); carCollection.DeleteMany(c => true); carCollection.InsertOne(new Car { Id = licensePlate, Description = $"\{linqProvider} - Description for license: \{licensePlate}" }); var deletedCarCollection = mongoDatabase.GetCollection<DeletedCar>("DeletedCars"); deletedCarCollection.DeleteMany(c => true); deletedCarCollection.InsertOne(new DeletedCar { Id = licensePlate, Description = $"\{linqProvider} - Deleted - Description for license: \{licensePlate}", DeletedDate = DateTime.UtcNow.AddDays(-1) }); Console.WriteLine(GetCarDescription_Works(carCollection.AsQueryable(), licensePlate)); Console.WriteLine(GetCarDescription_Works(deletedCarCollection.AsQueryable(), licensePlate)); Console.WriteLine(); Console.WriteLine(GetCarDescription_Fails(carCollection.AsQueryable(), licensePlate)); Console.WriteLine(GetCarDescription_Fails(deletedCarCollection.AsQueryable(), licensePlate)); Console.WriteLine(); Console.WriteLine(); } } private static string GetCarDescription_Works<T>(IQueryable<T> queryable, string licensePlate) where T : Car { return queryable.Where(d => d.Id == licensePlate).Select(d => d.Description).FirstOrDefault(); } private static string GetCarDescription_Fails(IQueryable<Car> queryable, string licensePlate) { return queryable.Where(d => d.Id == licensePlate).Select(d => d.Description).FirstOrDefault(); } private class Car { public string Id \{ get; set; } public string Description \{ get; set; } } private class DeletedCar : Car { public DateTime DeletedDate \{ get; set; } } }
Execution output:
Description for license: 5555XXX Deleted - Description for license: 5555XXX Description for license: 5555XXX Unhandled Exception: System.ArgumentException: ValueType 'Sample.Program+DeletedCar' of parameterSerializer does not match parameter type 'Sample.Program+Car'. Parameter name: parameterSerializer at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToFilterTranslators.ExpressionToFilterTranslator.TranslateLambda(TranslationContext context, LambdaExpression lambdaExpression, IBsonSerializer parameterSerializer, Boolean asRoot) at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.WhereMethodToPipelineTranslator.Translate(TranslationContext context, MethodCallExpression expression) at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.ExpressionToPipelineTranslator.Translate(TranslationContext context, Expression expression) at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.SelectMethodToPipelineTranslator.Translate(TranslationContext context, MethodCallExpression expression) at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToPipelineTranslators.ExpressionToPipelineTranslator.Translate(TranslationContext context, Expression expression) at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToExecutableQueryTranslators.FirstMethodToExecutableQueryTranslator`1.Translate[TDocument](MongoQueryProvider`1 provider, TranslationContext context, MethodCallExpression expression) at MongoDB.Driver.Linq.Linq3Implementation.Translators.ExpressionToExecutableQueryTranslators.ExpressionToExecutableQueryTranslator.TranslateScalar[TDocument,TResult](MongoQueryProvider`1 provider, Expression expression) at MongoDB.Driver.Linq.Linq3Implementation.MongoQueryProvider`1.Execute[TResult](Expression expression) at System.Linq.Queryable.FirstOrDefault[TSource](IQueryable`1 source) at Sample.Program.GetCarDescription_Fails(IQueryable`1 queryable, String licensePlate) in D:\tfs2015\Shared\Packages\Panda.DataAccess\Sample\Program.cs:line 53 at Sample.Program.Main(String[] args) in D:\tfs2015\Shared\Packages\Panda.DataAccess\Sample\Program.cs:line 43
- duplicates
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CSHARP-4535 Client cannot resolve serializer anymore when using IQueryable with base type
- Investigating