mirror of
https://github.com/pocoproject/poco.git
synced 2025-04-16 23:12:57 +02:00
147 lines
2.9 KiB
C++
147 lines
2.9 KiB
C++
//
|
|
// ODBCMetaColumn.cpp
|
|
//
|
|
// $Id: //poco/Main/Data/ODBC/src/ODBCMetaColumn.cpp#5 $
|
|
//
|
|
// Library: ODBC
|
|
// Package: ODBC
|
|
// Module: ODBCMetaColumn
|
|
//
|
|
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#include "Poco/Data/ODBC/ODBCMetaColumn.h"
|
|
#include "Poco/Data/ODBC/Utility.h"
|
|
|
|
|
|
namespace Poco {
|
|
namespace Data {
|
|
namespace ODBC {
|
|
|
|
|
|
ODBCMetaColumn::ODBCMetaColumn(const StatementHandle& rStmt, std::size_t position) :
|
|
MetaColumn(position),
|
|
_rStmt(rStmt)
|
|
{
|
|
init();
|
|
}
|
|
|
|
|
|
ODBCMetaColumn::~ODBCMetaColumn()
|
|
{
|
|
}
|
|
|
|
|
|
void ODBCMetaColumn::getDescription()
|
|
{
|
|
std::memset(_columnDesc.name, 0, NAME_BUFFER_LENGTH);
|
|
_columnDesc.nameBufferLength = 0;
|
|
_columnDesc.dataType = 0;
|
|
_columnDesc.size = 0;
|
|
_columnDesc.decimalDigits = 0;
|
|
_columnDesc.isNullable = 0;
|
|
|
|
if (Utility::isError(Poco::Data::ODBC::SQLDescribeCol(_rStmt,
|
|
(SQLUSMALLINT) position() + 1, // ODBC columns are 1-based
|
|
_columnDesc.name,
|
|
NAME_BUFFER_LENGTH,
|
|
&_columnDesc.nameBufferLength,
|
|
&_columnDesc.dataType,
|
|
&_columnDesc.size,
|
|
&_columnDesc.decimalDigits,
|
|
&_columnDesc.isNullable)))
|
|
{
|
|
throw StatementException(_rStmt);
|
|
}
|
|
}
|
|
|
|
|
|
void ODBCMetaColumn::init()
|
|
{
|
|
getDescription();
|
|
|
|
if (Utility::isError(Poco::Data::ODBC::SQLColAttribute(_rStmt,
|
|
(SQLUSMALLINT) position() + 1, // ODBC columns are 1-based
|
|
SQL_DESC_LENGTH,
|
|
0,
|
|
0,
|
|
0,
|
|
&_dataLength)))
|
|
{
|
|
throw StatementException(_rStmt);
|
|
}
|
|
|
|
setName(std::string((char*) _columnDesc.name));
|
|
setLength(_columnDesc.size);
|
|
setPrecision(_columnDesc.decimalDigits);
|
|
setNullable(SQL_NULLABLE == _columnDesc.isNullable);
|
|
switch(_columnDesc.dataType)
|
|
{
|
|
case SQL_BIT:
|
|
setType(MetaColumn::FDT_BOOL); break;
|
|
|
|
case SQL_CHAR:
|
|
case SQL_VARCHAR:
|
|
case SQL_LONGVARCHAR:
|
|
setType(MetaColumn::FDT_STRING); break;
|
|
|
|
case SQL_WCHAR:
|
|
case SQL_WVARCHAR:
|
|
case SQL_WLONGVARCHAR:
|
|
setType(MetaColumn::FDT_WSTRING); break;
|
|
|
|
case SQL_TINYINT:
|
|
setType(MetaColumn::FDT_INT8); break;
|
|
|
|
case SQL_SMALLINT:
|
|
setType(MetaColumn::FDT_INT16); break;
|
|
|
|
case SQL_INTEGER:
|
|
setType(MetaColumn::FDT_INT32); break;
|
|
|
|
case SQL_BIGINT:
|
|
setType(MetaColumn::FDT_INT64); break;
|
|
|
|
case SQL_DOUBLE:
|
|
case SQL_FLOAT:
|
|
setType(MetaColumn::FDT_DOUBLE); break;
|
|
|
|
case SQL_NUMERIC:
|
|
case SQL_DECIMAL:
|
|
if (0 == _columnDesc.decimalDigits)
|
|
setType(MetaColumn::FDT_INT32);
|
|
else
|
|
setType(MetaColumn::FDT_DOUBLE);
|
|
|
|
break;
|
|
|
|
case SQL_REAL:
|
|
setType(MetaColumn::FDT_FLOAT); break;
|
|
|
|
case SQL_BINARY:
|
|
case SQL_VARBINARY:
|
|
case SQL_LONGVARBINARY:
|
|
case -98:// IBM DB2 non-standard type
|
|
setType(MetaColumn::FDT_BLOB); break;
|
|
|
|
case SQL_TYPE_DATE:
|
|
setType(MetaColumn::FDT_DATE); break;
|
|
|
|
case SQL_TYPE_TIME:
|
|
setType(MetaColumn::FDT_TIME); break;
|
|
|
|
case SQL_TYPE_TIMESTAMP:
|
|
setType(MetaColumn::FDT_TIMESTAMP); break;
|
|
|
|
default:
|
|
throw DataFormatException("Unsupported data type.");
|
|
}
|
|
}
|
|
|
|
|
|
} } } // namespace Poco::Data::ODBC
|