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//
// Copyright (C) 2016 Maciej Sobczak
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)
//
#ifndef SOCI_COLUMN_INFO_H_INCLUDED
#define SOCI_COLUMN_INFO_H_INCLUDED
#include "soci/soci-backend.h"
#include "soci/type-conversion.h"
#include "soci/values.h"
#include <cstdint>
namespace soci
{
struct SOCI_DECL column_info
{
std::string name;
// DEPRECATED. USE dataType INSTEAD.
data_type type;
db_type dataType;
std::size_t length; // meaningful for text columns only
std::size_t precision;
std::size_t scale;
bool nullable;
};
template <>
struct type_conversion<column_info>
{
typedef values base_type;
static std::size_t get_numeric_value(const values & v,
const std::string & field_name)
{
db_type dt = v.get_properties(field_name).get_db_type();
switch (dt)
{
case db_double:
return static_cast<std::size_t>(
v.get<double>(field_name, 0.0));
case db_int8:
return static_cast<std::size_t>(
v.get<int8_t>(field_name, 0));
case db_uint8:
return static_cast<std::size_t>(
v.get<uint8_t>(field_name, 0));
case db_int16:
return static_cast<std::size_t>(
v.get<int16_t>(field_name, 0));
case db_uint16:
return static_cast<std::size_t>(
v.get<uint16_t>(field_name, 0));
case db_int32:
return static_cast<std::size_t>(
v.get<int32_t>(field_name, 0));
case db_uint32:
return static_cast<std::size_t>(
v.get<uint32_t>(field_name, 0));
case db_int64:
return static_cast<std::size_t>(
v.get<int64_t>(field_name, 0ll));
case db_uint64:
return static_cast<std::size_t>(
v.get<uint64_t>(field_name, 0ull));
default:
return 0u;
}
}
static void from_base(values const & v, indicator /* ind */, column_info & ci)
{
ci.name = v.get<std::string>("COLUMN_NAME");
ci.length = get_numeric_value(v, "CHARACTER_MAXIMUM_LENGTH");
ci.precision = get_numeric_value(v, "NUMERIC_PRECISION");
ci.scale = get_numeric_value(v, "NUMERIC_SCALE");
const std::string & type_name = v.get<std::string>("DATA_TYPE");
if (type_name == "text" || type_name == "TEXT" ||
type_name == "clob" || type_name == "CLOB" ||
type_name.find("char") != std::string::npos ||
type_name.find("CHAR") != std::string::npos)
{
ci.type = dt_string;
ci.dataType = db_string;
}
else if (type_name == "integer" || type_name == "INTEGER" ||
type_name == "int" || type_name == "INT")
{
ci.type = dt_integer;
ci.dataType = db_int32;
}
else if (type_name == "bigint" || type_name == "BIGINT")
{
ci.type = dt_long_long;
ci.dataType = db_int64;
}
else if (type_name.find("double") != std::string::npos ||
type_name.find("DOUBLE") != std::string::npos)
{
ci.type = dt_double;
ci.dataType = db_double;
}
else if (type_name.find("number") != std::string::npos ||
type_name.find("NUMBER") != std::string::npos ||
type_name.find("numeric") != std::string::npos ||
type_name.find("NUMERIC") != std::string::npos)
{
if (ci.scale != 0)
{
ci.type = dt_double;
ci.dataType = db_double;
}
else
{
ci.type = dt_integer;
ci.dataType = db_int32;
}
}
else if (type_name.find("time") != std::string::npos ||
type_name.find("TIME") != std::string::npos ||
type_name.find("date") != std::string::npos ||
type_name.find("DATE") != std::string::npos)
{
ci.type = dt_date;
ci.dataType = db_date;
}
else if (type_name.find("blob") != std::string::npos ||
type_name.find("BLOB") != std::string::npos ||
type_name.find("oid") != std::string::npos ||
type_name.find("OID") != std::string::npos)
{
ci.type = dt_blob;
ci.dataType = db_blob;
}
else if (type_name.find("xml") != std::string::npos ||
type_name.find("XML") != std::string::npos)
{
ci.type = dt_xml;
ci.dataType = db_xml;
}
else
{
// this seems to be a safe default
ci.type = dt_string;
ci.dataType = db_string;
}
const std::string & nullable_s = v.get<std::string>("IS_NULLABLE");
ci.nullable = (nullable_s == "YES");
}
};
} // namespace soci
#endif // SOCI_COLUMN_INFO_H_INCLUDED
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