feat: supported uuid YDB type

CHANGELOG.md

@@ -1,3 +1,5 @@
+- Supported UUID (Guid)
+
 ## v0.7.3
 - Fixed YdbDataReader: extract Json / Yson types
 

src/Ydb.Sdk/src/Ado/YdbDataReader.cs

@@ -225,6 +225,7 @@ public override System.Type GetFieldType(int ordinal)
                 typeof(string),
             YdbTypeId.String => typeof(byte[]),
             YdbTypeId.DecimalType => typeof(decimal),
+            YdbTypeId.Uuid => typeof(Guid),
             _ => throw new YdbException($"Unsupported ydb type {type}")
         };
 
@@ -339,6 +340,7 @@ public override object GetValue(int ordinal)
             YdbTypeId.Yson => ydbValue.GetYson(),
             YdbTypeId.String => ydbValue.GetString(),
             YdbTypeId.DecimalType => ydbValue.GetDecimal(),
+            YdbTypeId.Uuid => ydbValue.GetUuid(),
             _ => throw new YdbException($"Unsupported ydb type {ydbValue.TypeId}")
         };
     }

src/Ydb.Sdk/src/Ado/YdbParameter.cs

@@ -31,7 +31,8 @@ public sealed class YdbParameter : DbParameter
         { DbType.DateTime2, YdbValue.MakeOptionalTimestamp() },
         { DbType.DateTimeOffset, YdbValue.MakeOptionalTimestamp() },
         { DbType.Decimal, YdbValue.MakeOptionalDecimal() },
-        { DbType.Currency, YdbValue.MakeOptionalDecimal() }
+        { DbType.Currency, YdbValue.MakeOptionalDecimal() },
+        { DbType.Guid, YdbValue.MakeOptionalUuid() }
     };
 
     private string _parameterName = string.Empty;
@@ -165,7 +166,8 @@ string valueString when DbType is DbType.String or DbType.AnsiString or DbType.A
                     _ => ThrowInvalidCast()
                 },
                 byte[] bytesValue when DbType is DbType.Binary or DbType.Object => YdbValue.MakeString(bytesValue),
-                _ when DbType is DbType.VarNumeric or DbType.Xml or DbType.Guid or DbType.Time =>
+                Guid guidValue when DbType is DbType.Guid or DbType.Object => YdbValue.MakeUuid(guidValue),
+                _ when DbType is DbType.VarNumeric or DbType.Xml or DbType.Time =>
                     throw new YdbException($"Ydb don't supported this DbType: {DbType}"),
                 _ => ThrowInvalidCast()
             };

src/Ydb.Sdk/src/Value/YdbValueBuilder.cs

@@ -122,6 +122,17 @@ public static YdbValue MakeJsonDocument(string value)
             new Ydb.Value { TextValue = value });
     }
 
+    public static YdbValue MakeUuid(Guid guid)
+    {
+        var bytes = guid.ToByteArray();
+
+        var low = BitConverter.ToUInt64(bytes, 0);
+        var high = BitConverter.ToUInt64(bytes, 8);
+
+        return new YdbValue(MakePrimitiveType(Type.Types.PrimitiveTypeId.Uuid),
+            new Ydb.Value { Low128 = low, High128 = high });
+    }
+
     private static byte GetDecimalScale(decimal value)
     {
         var bits = decimal.GetBits(value);
@@ -237,9 +248,7 @@ public static YdbValue MakeList(IReadOnlyList<YdbValue> values)
         var value = new Ydb.Value();
         value.Items.Add(values.Select(v => v._protoValue));
 
-        return new YdbValue(
-            new Type { ListType = new ListType { Item = values[0]._protoType } },
-            value);
+        return new YdbValue(new Type { ListType = new ListType { Item = values[0]._protoType } }, value);
     }
 
     public static YdbValue MakeTuple(IReadOnlyList<YdbValue> values)
@@ -254,9 +263,7 @@ public static YdbValue MakeTuple(IReadOnlyList<YdbValue> values)
         var value = new Ydb.Value();
         value.Items.Add(values.Select(v => v._protoValue));
 
-        return new YdbValue(
-            type,
-            value);
+        return new YdbValue(type, value);
     }
 
     public static YdbValue MakeStruct(IReadOnlyDictionary<string, YdbValue> members)
@@ -399,6 +406,11 @@ public static YdbValue MakeOptionalJsonDocument(string? value = null)
         return MakeOptionalOf(value, YdbTypeId.JsonDocument, MakeJsonDocument);
     }
 
+    public static YdbValue MakeOptionalUuid(Guid? value = null)
+    {
+        return MakeOptionalOf(value, YdbTypeId.Uuid, MakeUuid);
+    }
+
     public static YdbValue MakeOptionalDecimal(decimal? value = null)
     {
         return MakeOptionalOf(value, YdbTypeId.DecimalType, MakeDecimal);

src/Ydb.Sdk/src/Value/YdbValueCast.cs

@@ -152,6 +152,10 @@ public static explicit operator decimal(YdbValue value)
         return GetOptionalPrimitive<decimal>(value);
     }
 
+    public static explicit operator Guid?(YdbValue value)
+    {
+        return GetOptionalPrimitive<Guid>(value);
+    }
 
     private static T? GetOptionalPrimitive<T>(YdbValue value) where T : struct
     {
@@ -192,6 +196,7 @@ private static T GetObject<T>(YdbValue value)
             YdbTypeId.Json => value.GetJson(),
             YdbTypeId.JsonDocument => value.GetJsonDocument(),
             YdbTypeId.DecimalType => value.GetDecimal(),
+            YdbTypeId.Uuid => value.GetUuid(),
             _ => throw new InvalidCastException($"Cannot cast YDB type {value.TypeId} to {typeof(T).Name}.")
         });
     }

src/Ydb.Sdk/src/Value/YdbValueParser.cs

@@ -127,6 +127,23 @@ public string GetJsonDocument()
         return _protoValue.TextValue;
     }
 
+    public Guid GetUuid()
+    {
+        EnsurePrimitiveTypeId(Type.Types.PrimitiveTypeId.Uuid);
+
+        var high = _protoValue.High128;
+        var low = _protoValue.Low128;
+
+        var lowBytes = BitConverter.GetBytes(low);
+        var highBytes = BitConverter.GetBytes(high);
+
+        var guidBytes = new byte[16];
+        Array.Copy(lowBytes, 0, guidBytes, 0, 8);
+        Array.Copy(highBytes, 0, guidBytes, 8, 8);
+
+        return new Guid(guidBytes);
+    }
+
     public decimal GetDecimal()
     {
         EnsureType(Type.TypeOneofCase.DecimalType);
@@ -258,6 +275,11 @@ public decimal GetDecimal()
         return GetOptional()?.GetJsonDocument();
     }
 
+    public Guid? GetOptionalUuid()
+    {
+        return GetOptional()?.GetUuid();
+    }
+
     public decimal? GetOptionalDecimal()
     {
         return GetOptional()?.GetDecimal();

src/Ydb.Sdk/tests/Ado/YdbCommandTests.cs

@@ -68,6 +68,33 @@ public async Task ExecuteScalarAsync_WhenSetYdbParameterThenPrepare_ReturnThisVa
         Assert.Equal(data.Expected, await dbCommand.ExecuteScalarAsync());
     }
 
+    [Theory]
+    [ClassData(typeof(YdbParameterTests.TestDataGenerator))]
+    public async Task ExecuteScalarAsync_WhenDbTypeIsObject_ReturnThisValue<T>(YdbParameterTests.Data<T> data)
+    {
+        if (data.IsNullable)
+        {
+            return;
+        }
+
+        await using var connection = new YdbConnection();
+        await connection.OpenAsync();
+
+        var dbCommand = connection.CreateCommand();
+
+        dbCommand.CommandText = "SELECT @var;";
+
+        var dbParameter = new YdbParameter
+        {
+            ParameterName = "@var",
+            Value = data.Expected,
+            IsNullable = data.IsNullable
+        };
+        dbCommand.Parameters.Add(dbParameter);
+
+        Assert.Equal(data.Expected, await dbCommand.ExecuteScalarAsync());
+    }
+
     [Fact]
     public async Task ExecuteScalarAsync_WhenNoDbTypeParameter_ReturnThisValue()
     {
@@ -404,4 +431,41 @@ public async Task ExecuteScalar_WhenSelectNull_ReturnNull()
 
         Assert.Null(await new YdbCommand(ydbConnection) { CommandText = "SELECT NULL" }.ExecuteScalarAsync());
     }
+
+    [Theory]
+    [InlineData("123e4567-e89b-12d3-a456-426614174000")]
+    [InlineData("2d9e498b-b746-9cfb-084d-de4e1cb4736e")]
+    [InlineData("6E73B41C-4EDE-4D08-9CFB-B7462D9E498B")]
+    public async Task Guid_WhenSelectUuid_ReturnThisUuid(string guid)
+    {
+        await using var ydbConnection = new YdbConnection();
+        await ydbConnection.OpenAsync();
+
+        var actualGuid = await new YdbCommand(ydbConnection)
+                { CommandText = $"SELECT CAST('{guid}' AS UUID);" }
+            .ExecuteScalarAsync();
+
+        Assert.Equal(new Guid(guid), actualGuid);
+        Assert.Equal(guid.ToLower(), actualGuid?.ToString()); // Guid.ToString() method represents lowercase
+    }
+
+    [Theory]
+    [InlineData("123e4567-e89b-12d3-a456-426614174000")]
+    [InlineData("2d9e498b-b746-9cfb-084d-de4e1cb4736e")]
+    [InlineData("6E73B41C-4EDE-4D08-9CFB-B7462D9E498B")]
+    public async Task Guid_WhenSetUuid_ReturnThisUtf8Uuid(string guid)
+    {
+        await using var ydbConnection = new YdbConnection();
+        await ydbConnection.OpenAsync();
+
+        var ydbCommand = new YdbCommand(ydbConnection)
+        {
+            CommandText = "SELECT CAST(@guid AS Text);"
+        };
+        ydbCommand.Parameters.Add(new YdbParameter("guid", DbType.Guid, new Guid(guid)));
+
+        var actualGuidText = await ydbCommand.ExecuteScalarAsync();
+
+        Assert.Equal(guid.ToLower(), actualGuidText); // Guid.ToString() method represents lowercase
+    }
 }

src/Ydb.Sdk/tests/Ado/YdbParameterTests.cs

@@ -80,7 +80,6 @@ public void YdbValue_WhenUnCastTypes_ThrowInvalidCastException()
     [Theory]
     [InlineData(DbType.VarNumeric, "VarNumeric")]
     [InlineData(DbType.Xml, "Xml")]
-    [InlineData(DbType.Guid, "Guid")]
     [InlineData(DbType.Time, "Time")]
     public void YdbValue_WhenNoSupportedDbType_ThrowException(DbType dbType, string name)
     {
@@ -183,6 +182,17 @@ public class TestDataGenerator : IEnumerable<object[]>
             new object[] { new Data<double>(DbType.Double, 123.45, value => value.GetDouble()) },
             new object[] { new Data<double?>(DbType.Double, 123.45, value => value.GetDouble(), true) },
             new object[] { new Data<double?>(DbType.Double, null, value => value.GetOptionalDouble()) },
+            new object[]
+            {
+                new Data<Guid>(DbType.Guid, new Guid("6E73B41C-4EDE-4D08-9CFB-B7462D9E498B"),
+                    value => value.GetUuid())
+            },
+            new object[]
+            {
+                new Data<Guid?>(DbType.Guid, new Guid("6E73B41C-4EDE-4D08-9CFB-B7462D9E498B"),
+                    value => value.GetUuid(), true)
+            },
+            new object[] { new Data<Guid?>(DbType.Guid, null, value => value.GetOptionalUuid()) },
             new object[] { new Data<DateTime>(DbType.Date, new DateTime(2021, 08, 21), value => value.GetDate()) },
             new object[]
             {

src/Ydb.Sdk/tests/Value/YdbValueTests.cs

@@ -86,6 +86,17 @@ private class TestDataGenerator : IEnumerable<object[]>
             new object[] { new Data<double>(123.45, YdbValue.MakeDouble, value => value.GetDouble()) },
             new object[] { new Data<double?>(123.45, YdbValue.MakeOptionalDouble, value => value.GetOptionalDouble()) },
             new object[] { new Data<double?>(null, YdbValue.MakeOptionalDouble, value => value.GetOptionalDouble()) },
+            new object[]
+            {
+                new Data<Guid>(new Guid("6E73B41C-4EDE-4D08-9CFB-B7462D9E498B"), YdbValue.MakeUuid,
+                    value => value.GetUuid())
+            },
+            new object[]
+            {
+                new Data<Guid?>(new Guid("6E73B41C-4EDE-4D08-9CFB-B7462D9E498B"), YdbValue.MakeOptionalUuid,
+                    value => value.GetOptionalUuid())
+            },
+            new object[] { new Data<Guid?>(null, YdbValue.MakeOptionalUuid, value => value.GetOptionalUuid()) },
             new object[]
                 { new Data<DateTime>(new DateTime(2021, 08, 21), YdbValue.MakeDate, value => value.GetDate()) },
             new object[]