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C# Guid to Oracle blob throw the System.ArgumentException:value does not fall within the expected range

fuyong859050943 opened this issue · comments

commented 
   在 Oracle.ManagedDataAccess.Client.OracleParameter.set_DbType(DbType value)
   在 ParamInfo4292f180-6c8f-40d8-9d00-382a91f8abc2(IDbCommand , Object )
   在 Dapper.CommandDefinition.SetupCommand(IDbConnection cnn, Action`2 paramReader) 位置 D:\Dev\dapper-dot-net\Dapper NET40\SqlMapper.cs:行号 191
   在 Dapper.SqlMapper.ExecuteCommand(IDbConnection cnn, CommandDefinition& command, Action`2 paramReader) 位置 D:\Dev\dapper-dot-net\Dapper NET40\SqlMapper.cs:行号 3395
   在 Dapper.SqlMapper.ExecuteImpl(IDbConnection cnn, CommandDefinition& command) 位置 D:\Dev\dapper-dot-net\Dapper NET40\SqlMapper.cs:行号 1346
   在 Dapper.SqlMapper.Execute(IDbConnection cnn, String sql, Object param, IDbTransaction transaction, Nullable`1 commandTimeout, Nullable`1 commandType) 位置 D:\Dev\dapper-dot-net\Dapper NET40\SqlMapper.cs:行号 1221
   在 AiDiEr.ServicesTest.UnitServiceTest.TestGuid2Blob() 位置 F:\Git\IdealAPP\idr_shoppers_app\idr_shoppers_app\IdealShopApp\AiDiEr.ServicesTest\UnitServiceTest.cs:行号 149
commented

sorry, how can I use dapper get the data from oracle into C# GUID,the oracle type mybe blob or varchar2 ?

commented

We'd have to have more info here. What is the schema and code you're using to access it? Just an error with no context isn't anything we can go on here.

commented

Note there should be a 1.50.3-beta1 that might already fix this, but I
think nuget ate it. Will re-upload tomorrow.

On 8 Nov 2016 11:49 a.m., "Nick Craver" notifications@github.com wrote:

We'd have to have more info here. What is the schema and code you're using
to access it? Just an error with no context isn't anything we can go on
here.

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commented
  1. Remove Guid type.
            SqlMapper.RemoveTypeMap(typeof(Guid));
            SqlMapper.RemoveTypeMap(typeof(Guid?));
  1. Create a custom TypeHandler.
    public class GuidTypeHandler : SqlMapper.ITypeHandler
    {
        public void SetValue(IDbDataParameter parameter, object value)
        {
            OracleParameter oracleParameter = (OracleParameter) parameter;
            oracleParameter.OracleDbType = OracleDbType.Raw;
            parameter.Value = value;
        }

        public object Parse(Type destinationType, object value)
        {
            return new Guid((byte[]) value);
        }
    }
  1. Add the custom TypeHandler.
            SqlMapper.AddTypeHandler(typeof(Guid), new GuidTypeHandler());
commented
commented

Is only for oracle database, use Raw(16) data type to store the Guid type.

  1. When parameter type is Guid type, throw ArgumentException.

            Guid id = Guid.Parse("{47F2BD22-93DF-4CB6-8143-C801376D592F}");
        
        using (OracleConnection oracleConnection =  new OracleConnection("***********"))
        {
            oracleConnection.Execute(@"delete  rooms_bak where ROOMID=:id", new
            {
                id = id
            });
        }
    System.ArgumentException
Value does not fall within the expected range.
at Oracle.ManagedDataAccess.Client.OracleParameter.set_DbType(DbType value)
at ParamInfo5347f843-dcf0-4df8-9cc4-b50200c576c8(IDbCommand , Object )
at Dapper.CommandDefinition.SetupCommand(IDbConnection cnn, Action`2 paramReader)
at Dapper.SqlMapper.ExecuteCommand(IDbConnection cnn, CommandDefinition& command, Action`2 paramReader)
at Dapper.SqlMapper.ExecuteImpl(IDbConnection cnn, CommandDefinition& command)
at Dapper.SqlMapper.Execute(IDbConnection cnn, String sql, Object param, IDbTransaction transaction, Nullable`1 commandTimeout, Nullable`1 commandType)
at Dapper.Oracle.Tests.AppTest.Dapper_Oracle_Guid_Test() in G:\source\Dapper-master\Dapper.Oracle.Tests\AppTest.cs:line 32

  2. When query from database, throw InvalidCastException.

            using (OracleConnection oracleConnection =  new OracleConnection("***********")
        {
            MyEntity myEntity = oracleConnection.QuerySingle<MyEntity>("select RoomId from rooms_bak where  ROWNUM <= (1)");
        }
        public class MyEntity
        {
            public Guid RoomId { get; set; }
        }
    System.Data.DataException
Error parsing column 0 (ROOMID=System.Byte[] - Object)
at Dapper.SqlMapper.ThrowDataException(Exception ex, Int32 index, IDataReader reader, Object value)
at Deserialize97421cba-aa6e-4967-a115-3de767aeb463(IDataReader )
at Dapper.SqlMapper.QueryRowImpl[T](IDbConnection cnn, Row row, CommandDefinition& command, Type effectiveType)
at Dapper.SqlMapper.QuerySingle[T](IDbConnection cnn, String sql, Object param, IDbTransaction transaction, Nullable`1 commandTimeout, Nullable`1 commandType)
at Dapper.Oracle.Tests.AppTest.Dapper_Oracle_Guid_Test() in G:\source\Dapper-master\Dapper.Oracle.Tests\AppTest.cs:line 42

System.InvalidCastException
Specified cast is not valid.
at Deserialize97421cba-aa6e-4967-a115-3de767aeb463(IDataReader )
commented
commented

  1. OracleParameter class can't set DbType property to DbType.Guid

            var oracleParameter = new OracleParameter();
        oracleParameter.DbType = DbType.Guid;

    System.ArgumentException
    Value does not fall within the expected range.
    at Oracle.ManagedDataAccess.Client.OracleParameter.set_DbType(DbType value)
    at Dapper.Oracle.Tests.AppTest.Dapper_Oracle_Guid_Test() in G:\source\Dapper-master\Dapper.Oracle.Tests\AppTest.cs:line 24

    The following is the same error :

             var oracleParameter = new OracleParameter();
         oracleParameter.Value = Guid.NewGuid();

    System.ArgumentException
    Value does not fall within the expected range.
    at Oracle.ManagedDataAccess.Client.OracleParameter.set_Value(Object value)
    at Dapper.Oracle.Tests.AppTest.Dapper_Oracle_Guid_Test() in G:\source\Dapper-master\Dapper.Oracle.Tests\AppTest.cs:line 47

    Successful code is :

             var oracleParameter = new OracleParameter();
         oracleParameter.DbType = DbType.Object;
         oracleParameter.OracleDbType = OracleDbType.Raw;
         oracleParameter.Value = Guid.NewGuid();

  2. Oracle Database Online Documentation suggested that use Raw(16) data type to store the Guid type.
    https://docs.oracle.com/cd/E11882_01/win.112/e23174/featLINQ.htm#ODPNT219.
    Raw type storage format is binary，this test is successful.

        [Fact]
    public void Dapper_Oracle_Guid_Type_Test()
    {
        object guidValue = null;

        using (OracleConnection oracleConnection =
            new OracleConnection("**********"))
        {
            using (IDataReader dataReader = oracleConnection.ExecuteReader("select RoomId from rooms_bak where  ROWNUM <= (1)"))
            {
                while (dataReader.Read())
                {
                    guidValue = dataReader.GetValue(0);
                }
            }
        }

        Assert.NotNull(guidValue);
        Assert.IsType<byte[]>(guidValue);
    }
commented

I've had a look through the issues related to GUIDs on Oracle and it's unclear whether or not they are meant to be supported.
I have tried both CHAR(32) and RAW(16) but Dapper doesn't want to convert either into a .NET Guid class.
Is this possible without performing the type conversion yourself?
(I would assume these are the Oracle column data types that need to be used to avoid endian issues using Guid.ToString)

commented
commented

Oh OK.. I thought RAW(16) would solve all endian problems if new Guid(byte[]) and Guid.ToByteArray were used.

Thanks for all the great work though!

Oh wait.. I think I get it. You're talking about supporting some source of Guid generation/interpretation outside of .NET?

commented
commented

Sending a link couldn't hurt but at this point the question was largely academic - I was just checking if Guid support was built-in when using Oracle.