public void MaxLength()
{
using var reader = m_database.Connection.ExecuteReader(@"select coll.ID, cs.MAXLEN from information_schema.collations coll inner join information_schema.character_sets cs using(CHARACTER_SET_NAME);");
while (reader.Read())
{
var characterSet = (CharacterSet)reader.GetInt32(0);
var maxLength = reader.GetInt32(1);
Assert.Equal(maxLength, ProtocolUtility.GetBytesPerCharacter(characterSet));
}
}
internal MySqlDbColumn(int ordinal, ColumnDefinitionPayload column, MySqlDbType mySqlDbType)
{
var columnTypeMetadata = TypeMapper.Instance.GetColumnTypeMetadata(mySqlDbType);
var type = columnTypeMetadata.DbTypeMapping.ClrType;
var columnSize = type == typeof(string) || type == typeof(Guid) ?
column.ColumnLength / ProtocolUtility.GetBytesPerCharacter(column.CharacterSet) :
column.ColumnLength;
AllowDBNull = (column.ColumnFlags & ColumnFlags.NotNull) == 0;
BaseCatalogName = null;
BaseColumnName = column.PhysicalName;
BaseSchemaName = column.SchemaName;
BaseTableName = column.PhysicalTable;
ColumnName = column.Name;
ColumnOrdinal = ordinal;
ColumnSize = columnSize > int.MaxValue ? int.MaxValue : unchecked ((int)columnSize);
DataType = type;
DataTypeName = columnTypeMetadata.SimpleDataTypeName;
if (mySqlDbType == MySqlDbType.String)
{
DataTypeName += string.Format(CultureInfo.InvariantCulture, "({0})", columnSize);
}
IsAliased = column.PhysicalName != column.Name;
IsAutoIncrement = (column.ColumnFlags & ColumnFlags.AutoIncrement) != 0;
IsExpression = false;
IsHidden = false;
IsKey = (column.ColumnFlags & ColumnFlags.PrimaryKey) != 0;
IsLong = column.ColumnLength > 255 &&
((column.ColumnFlags & ColumnFlags.Blob) != 0 || column.ColumnType == ColumnType.TinyBlob || column.ColumnType == ColumnType.Blob || column.ColumnType == ColumnType.MediumBlob || column.ColumnType == ColumnType.LongBlob);
IsReadOnly = false;
IsUnique = (column.ColumnFlags & ColumnFlags.UniqueKey) != 0;
if (column.ColumnType == ColumnType.Decimal || column.ColumnType == ColumnType.NewDecimal)
{
NumericPrecision = (int)column.ColumnLength;
if ((column.ColumnFlags & ColumnFlags.Unsigned) == 0)
{
NumericPrecision--;
}
if (column.Decimals > 0)
{
NumericPrecision--;
}
}
NumericScale = column.Decimals;
ProviderType = mySqlDbType;
}
public static MySqlDbType ConvertToMySqlDbType(ColumnDefinitionPayload columnDefinition, bool treatTinyAsBoolean, MySqlGuidFormat guidFormat)
{
var isUnsigned = (columnDefinition.ColumnFlags & ColumnFlags.Unsigned) != 0;
switch (columnDefinition.ColumnType)
{
case ColumnType.Tiny:
return(treatTinyAsBoolean && columnDefinition.ColumnLength == 1 ? MySqlDbType.Bool :
isUnsigned?MySqlDbType.UByte : MySqlDbType.Byte);
case ColumnType.Int24:
return(isUnsigned ? MySqlDbType.UInt24 : MySqlDbType.Int24);
case ColumnType.Long:
return(isUnsigned ? MySqlDbType.UInt32 : MySqlDbType.Int32);
case ColumnType.Longlong:
return(isUnsigned ? MySqlDbType.UInt64 : MySqlDbType.Int64);
case ColumnType.Bit:
return(MySqlDbType.Bit);
case ColumnType.String:
if (guidFormat == MySqlGuidFormat.Char36 && columnDefinition.ColumnLength / ProtocolUtility.GetBytesPerCharacter(columnDefinition.CharacterSet) == 36)
{
return(MySqlDbType.Guid);
}
if (guidFormat == MySqlGuidFormat.Char32 && columnDefinition.ColumnLength / ProtocolUtility.GetBytesPerCharacter(columnDefinition.CharacterSet) == 32)
{
return(MySqlDbType.Guid);
}
if ((columnDefinition.ColumnFlags & ColumnFlags.Enum) != 0)
{
return(MySqlDbType.Enum);
}
if ((columnDefinition.ColumnFlags & ColumnFlags.Set) != 0)
{
return(MySqlDbType.Set);
}
goto case ColumnType.VarString;
case ColumnType.VarString:
case ColumnType.TinyBlob:
case ColumnType.Blob:
case ColumnType.MediumBlob:
case ColumnType.LongBlob:
var type = columnDefinition.ColumnType;
if (columnDefinition.CharacterSet == CharacterSet.Binary)
{
if ((guidFormat == MySqlGuidFormat.Binary16 || guidFormat == MySqlGuidFormat.TimeSwapBinary16 || guidFormat == MySqlGuidFormat.LittleEndianBinary16) && columnDefinition.ColumnLength == 16)
{
return(MySqlDbType.Guid);
}
return(type == ColumnType.String ? MySqlDbType.Binary :
type == ColumnType.VarString ? MySqlDbType.VarBinary :
type == ColumnType.TinyBlob ? MySqlDbType.TinyBlob :
type == ColumnType.Blob ? MySqlDbType.Blob :
type == ColumnType.MediumBlob ? MySqlDbType.MediumBlob :
MySqlDbType.LongBlob);
}
return(type == ColumnType.String ? MySqlDbType.String :
type == ColumnType.VarString ? MySqlDbType.VarChar :
type == ColumnType.TinyBlob ? MySqlDbType.TinyText :
type == ColumnType.Blob ? MySqlDbType.Text :
type == ColumnType.MediumBlob ? MySqlDbType.MediumText :
MySqlDbType.LongText);
case ColumnType.Json:
return(MySqlDbType.JSON);
case ColumnType.Short:
return(isUnsigned ? MySqlDbType.UInt16 : MySqlDbType.Int16);
case ColumnType.Date:
return(MySqlDbType.Date);
case ColumnType.DateTime:
return(MySqlDbType.DateTime);
case ColumnType.Timestamp:
return(MySqlDbType.Timestamp);
case ColumnType.Time:
return(MySqlDbType.Time);
case ColumnType.Year:
return(MySqlDbType.Year);
case ColumnType.Float:
return(MySqlDbType.Float);
case ColumnType.Double:
return(MySqlDbType.Double);
case ColumnType.Decimal:
return(MySqlDbType.Decimal);
case ColumnType.NewDecimal:
return(MySqlDbType.NewDecimal);
case ColumnType.Geometry:
return(MySqlDbType.Geometry);
case ColumnType.Null:
return(MySqlDbType.Null);
default:
throw new NotImplementedException("ConvertToMySqlDbType for {0} is not implemented".FormatInvariant(columnDefinition.ColumnType));
}
}
public string GetDataTypeName(int ordinal)
{
if (ordinal < 0 || ordinal > ColumnDefinitions.Length)
{
throw new ArgumentOutOfRangeException(nameof(ordinal), "value must be between 0 and {0}.".FormatInvariant(ColumnDefinitions.Length));
}
var mySqlDbType = ColumnTypes[ordinal];
if (mySqlDbType == MySqlDbType.String)
{
return(string.Format(CultureInfo.InvariantCulture, "CHAR({0})", ColumnDefinitions[ordinal].ColumnLength / ProtocolUtility.GetBytesPerCharacter(ColumnDefinitions[ordinal].CharacterSet)));
}
return(TypeMapper.Instance.GetColumnTypeMetadata(mySqlDbType).SimpleDataTypeName);
}
protected override object GetValueCore(ReadOnlySpan <byte> data, ColumnDefinitionPayload columnDefinition)
{
var isUnsigned = (columnDefinition.ColumnFlags & ColumnFlags.Unsigned) != 0;
switch (columnDefinition.ColumnType)
{
case ColumnType.Tiny:
var value = ParseInt32(data);
if (Connection.TreatTinyAsBoolean && columnDefinition.ColumnLength == 1 && !isUnsigned)
{
return(value != 0);
}
return(isUnsigned ? (object)(byte)value : (sbyte)value);
case ColumnType.Int24:
case ColumnType.Long:
return(isUnsigned ? (object)ParseUInt32(data) : ParseInt32(data));
case ColumnType.Longlong:
return(isUnsigned ? (object)ParseUInt64(data) : ParseInt64(data));
case ColumnType.Bit:
return(ReadBit(data, columnDefinition));
case ColumnType.String:
if (Connection.GuidFormat == MySqlGuidFormat.Char36 && columnDefinition.ColumnLength / ProtocolUtility.GetBytesPerCharacter(columnDefinition.CharacterSet) == 36)
{
return(Utf8Parser.TryParse(data, out Guid guid, out int guid36BytesConsumed, 'D') && guid36BytesConsumed == 36 ? guid : throw new FormatException());
}
if (Connection.GuidFormat == MySqlGuidFormat.Char32 && columnDefinition.ColumnLength / ProtocolUtility.GetBytesPerCharacter(columnDefinition.CharacterSet) == 32)
{
return(Utf8Parser.TryParse(data, out Guid guid, out int guid32BytesConsumed, 'N') && guid32BytesConsumed == 32 ? guid : throw new FormatException());
}
goto case ColumnType.VarString;
case ColumnType.VarString:
case ColumnType.VarChar:
case ColumnType.TinyBlob:
case ColumnType.Blob:
case ColumnType.MediumBlob:
case ColumnType.LongBlob:
if (columnDefinition.CharacterSet == CharacterSet.Binary)
{
var guidFormat = Connection.GuidFormat;
if ((guidFormat == MySqlGuidFormat.Binary16 || guidFormat == MySqlGuidFormat.TimeSwapBinary16 || guidFormat == MySqlGuidFormat.LittleEndianBinary16) && columnDefinition.ColumnLength == 16)
{
return(CreateGuidFromBytes(guidFormat, data));
}
return(data.ToArray());
}
return(Encoding.UTF8.GetString(data));
case ColumnType.Json:
return(Encoding.UTF8.GetString(data));
case ColumnType.Short:
return(isUnsigned ? (object)ParseUInt16(data) : ParseInt16(data));
case ColumnType.Date:
case ColumnType.DateTime:
case ColumnType.Timestamp:
return(ParseDateTime(data));
case ColumnType.Time:
return(Utility.ParseTimeSpan(data));
case ColumnType.Year:
return(ParseInt32(data));
case ColumnType.Float:
return(!Utf8Parser.TryParse(data, out float floatValue, out var floatBytesConsumed) || floatBytesConsumed != data.Length ? throw new FormatException() : floatValue);
case ColumnType.Double:
return(!Utf8Parser.TryParse(data, out double doubleValue, out var doubleBytesConsumed) || doubleBytesConsumed != data.Length ? throw new FormatException() : doubleValue);
case ColumnType.Decimal:
case ColumnType.NewDecimal:
return(Utf8Parser.TryParse(data, out decimal decimalValue, out int bytesConsumed) && bytesConsumed == data.Length ? decimalValue : throw new FormatException());
case ColumnType.Geometry:
return(data.ToArray());
default:
throw new NotImplementedException("Reading {0} not implemented".FormatInvariant(columnDefinition.ColumnType));
}
}
protected override object GetValueCore(ReadOnlySpan <byte> data, ColumnDefinitionPayload columnDefinition)
{
var isUnsigned = (columnDefinition.ColumnFlags & ColumnFlags.Unsigned) != 0;
switch (columnDefinition.ColumnType)
{
case ColumnType.Tiny:
if (Connection.TreatTinyAsBoolean && columnDefinition.ColumnLength == 1 && !isUnsigned)
{
return(data[0] != 0);
}
return(isUnsigned ? (object)data[0] : (sbyte)data[0]);
case ColumnType.Int24:
case ColumnType.Long:
return(isUnsigned ? (object)MemoryMarshal.Read <uint>(data) : MemoryMarshal.Read <int>(data));
case ColumnType.Longlong:
return(isUnsigned ? (object)MemoryMarshal.Read <ulong>(data) : MemoryMarshal.Read <long>(data));
case ColumnType.Bit:
// BIT column is transmitted as MSB byte array
ulong bitValue = 0;
for (int i = 0; i < data.Length; i++)
{
bitValue = bitValue * 256 + data[i];
}
return(bitValue);
case ColumnType.String:
if (Connection.GuidFormat == MySqlGuidFormat.Char36 && columnDefinition.ColumnLength / ProtocolUtility.GetBytesPerCharacter(columnDefinition.CharacterSet) == 36)
{
return(Utf8Parser.TryParse(data, out Guid guid, out int guid36BytesConsumed, 'D') && guid36BytesConsumed == 36 ? guid : throw new FormatException());
}
if (Connection.GuidFormat == MySqlGuidFormat.Char32 && columnDefinition.ColumnLength / ProtocolUtility.GetBytesPerCharacter(columnDefinition.CharacterSet) == 32)
{
return(Utf8Parser.TryParse(data, out Guid guid, out int guid32BytesConsumed, 'N') && guid32BytesConsumed == 32 ? guid : throw new FormatException());
}
goto case ColumnType.VarString;
case ColumnType.VarString:
case ColumnType.VarChar:
case ColumnType.TinyBlob:
case ColumnType.Blob:
case ColumnType.MediumBlob:
case ColumnType.LongBlob:
if (columnDefinition.CharacterSet == CharacterSet.Binary)
{
var guidFormat = Connection.GuidFormat;
if ((guidFormat == MySqlGuidFormat.Binary16 || guidFormat == MySqlGuidFormat.TimeSwapBinary16 || guidFormat == MySqlGuidFormat.LittleEndianBinary16) && columnDefinition.ColumnLength == 16)
{
return(CreateGuidFromBytes(guidFormat, data));
}
return(data.ToArray());
}
return(Encoding.UTF8.GetString(data));
case ColumnType.Json:
return(Encoding.UTF8.GetString(data));
case ColumnType.Short:
return(isUnsigned ? (object)MemoryMarshal.Read <ushort>(data) : MemoryMarshal.Read <short>(data));
case ColumnType.Date:
case ColumnType.DateTime:
case ColumnType.Timestamp:
return(ReadDateTime(data));
case ColumnType.Time:
return(ReadTimeSpan(data));
case ColumnType.Year:
return((int)MemoryMarshal.Read <short>(data));
case ColumnType.Float:
return(MemoryMarshal.Read <float>(data));
case ColumnType.Double:
return(MemoryMarshal.Read <double>(data));
case ColumnType.Decimal:
case ColumnType.NewDecimal:
return(Utf8Parser.TryParse(data, out decimal decimalValue, out int bytesConsumed) && bytesConsumed == data.Length ? decimalValue : throw new FormatException());
case ColumnType.Geometry:
return(data.ToArray());
default:
throw new NotImplementedException("Reading {0} not implemented".FormatInvariant(columnDefinition.ColumnType));
}
}