ClickHouse/dbms/include/DB/Core/toField.h
2013-08-11 03:40:14 +00:00

42 lines
732 B
C++

#pragma once
#include <Yandex/Common.h> /// VisitID_t
#include <DB/Core/Field.h>
namespace DB
{
/// Перевести что угодно в Field.
template <typename T>
inline Field toField(const T & x)
{
return Field(typename NearestFieldType<T>::Type(x));
}
inline Field toField(const mysqlxx::Date & x)
{
return toField(static_cast<UInt16>(x.getDayNum()));
}
inline Field toField(const mysqlxx::DateTime & x)
{
return toField(static_cast<UInt32>(static_cast<time_t>(x)));
}
inline Field toField(const VisitID_t & x)
{
return toField(static_cast<UInt64>(x));
}
template <typename T>
inline Field toField(const mysqlxx::Null<T> & x)
{
return x.isNull() ? Field(Null()) : toField(static_cast<const T &>(x));
}
}