private bool TryGuess(SqlColumnDefinition column, string columnName)
{
if (columnName.StartsWith("date", StringComparison.OrdinalIgnoreCase) ||
columnName.EndsWith("date", StringComparison.OrdinalIgnoreCase))
{
column.Name = columnName;
column.Type = TDSDataType.DateTime2N;
column.Size = 7;
return(true);
}
if (columnName.StartsWith("guid", StringComparison.OrdinalIgnoreCase) ||
columnName.EndsWith("guid", StringComparison.OrdinalIgnoreCase))
{
column.Name = columnName;
column.Type = TDSDataType.Guid;
column.Size = 16;
return(true);
}
if (columnName.StartsWith("id", StringComparison.OrdinalIgnoreCase) ||
columnName.EndsWith("id", StringComparison.OrdinalIgnoreCase))
{
column.Name = columnName;
column.Type = TDSDataType.IntN;
column.Size = 4;
return(true);
}
return(false);
}
private IEnumerable <SqlColumnDefinition> GetColumnsInternal()
{
if (!String.IsNullOrEmpty(Table))
{
var header = Table.Split("\r\n").First();
foreach (var rawColumnName in header.Split(ColumnSeparator, StringSplitOptions.RemoveEmptyEntries))
{
if (rawColumnName.Contains("/"))
{
var parts = rawColumnName.Split("/");
var columnName = parts[0];
var type = parts[1];
var columnDef = new SqlColumnDefinition
{
Name = columnName
};
InjectTDSType(columnDef, type);
yield return(columnDef);
}
else
{
SqlColumnDefinition columnDef = new SqlColumnDefinition();
if (!TryGuess(columnDef, rawColumnName))
{
columnDef = new SqlColumnDefinition
{
Name = rawColumnName,
Type = TDSDataType.NVarChar,
Size = 4000
};
}
yield return(columnDef);
}
}
}
}
private static Object GetValue(SqlColumnDefinition column, string value)
{
if (0 == String.Compare(value, "null", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
switch (column.Type)
{
case TDSDataType.Int4:
case TDSDataType.Int1:
case TDSDataType.Int2:
case TDSDataType.IntN:
case TDSDataType.Int8:
{
switch (column.Size)
{
case 1:
{
return((byte)int.Parse(value));
}
case 2:
{
return((short)int.Parse(value));
}
case 4:
{
return(int.Parse(value));
}
case 8:
{
return(long.Parse(value));
}
default:
throw new NotImplementedException("Can't convert size - " + column.Size);
}
}
case TDSDataType.BigVarBinary:
{
var array = value.Substring(2).ToCharArray();
return(Convert.FromBase64CharArray(array, 0, array.Length));
}
case TDSDataType.Guid:
{
return(Guid.Parse(value));
}
case TDSDataType.Xml:
{
return(value);
}
case TDSDataType.MoneyN:
case TDSDataType.DecimalN:
{
return(decimal.Parse(value));
}
case TDSDataType.Bit:
{
if (value == "0")
{
return(false);
}
else if (value == "1")
{
return(true);
}
else
{
return(bool.Parse(value));
}
}
case TDSDataType.NVarChar:
{
return(value);
}
case TDSDataType.DateTime:
case TDSDataType.DateTime2N:
{
return(DateTime.Parse(value));
}
default:
throw new NotImplementedException("Can't parse type " + column.Type);
}
}
private void InjectTDSType(SqlColumnDefinition column, string type)
{
switch (type.ToLowerInvariant())
{
case "int":
{
column.Type = TDSDataType.IntN;
column.Size = 4;
break;
}
case "bit":
{
column.Type = TDSDataType.Bit;
break;
}
case "tinyint":
{
column.Type = TDSDataType.IntN;
column.Size = 1;
break;
}
case "bigint":
{
column.Type = TDSDataType.IntN;
column.Size = 8;
break;
}
case "datetime":
{
column.Type = TDSDataType.DateTime2N;
column.Size = 7;
break;
}
case "smallint":
{
column.Type = TDSDataType.Int2;
column.Size = 2;
break;
}
case "nvarchar":
{
column.Type = TDSDataType.NVarChar;
column.Size = 1000;
break;
}
case "varbinary":
{
column.Type = TDSDataType.BigVarBinary;
column.Size = 1000;
break;
}
case "money":
{
column.Type = TDSDataType.MoneyN;
column.Size = 8;
break;
}
case "guid":
{
column.Type = TDSDataType.Guid;
column.Size = 16;
break;
}
case "decimal":
{
column.Type = TDSDataType.DecimalN;
break;
}
case "xml":
{
column.Type = TDSDataType.Xml;
column.Size = 4000;
break;
}
default:
throw new NotImplementedException("Can't understand type " + type + ".");
}
}
