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/* paramdata.h
*
* $Id$
*
* This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
* project.
*
* Copyright (C) 1998-2018 OpenLink Software
*
* This project is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; only version 2 of the License, dated June 1991.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*
*/
#ifndef PARAMDATA_H
#define PARAMDATA_H
#include "data.h"
// defined in session.h
struct Schema;
class ParameterInfo : public DataFieldInfo
{
public:
HRESULT InitParameterInfo(const SQLWCHAR* name,
SQLSMALLINT sql_type, SQLUINTEGER field_size, SQLSMALLINT decimal_digits,
SQLSMALLINT nullable, SQLSMALLINT param_type);
HRESULT InitParameterInfo(const DBPARAMBINDINFO& param_bind_info);
HRESULT InitSchemaParameterInfo(SQLSMALLINT sql_type, SQLINTEGER field_size, DBTYPE oledb_type);
// Used when parameter information neither provided by application nor obtained
// from server (that is the statement executed was not prepared).
HRESULT InitDefaultParameterInfo(const DBBINDING& binding);
void InitDefaultParameterType(const DBBINDING& binding);
};
class ParameterPolicy : public DataRecordInfo, public SetDataHandler
{
public:
ParameterPolicy();
~ParameterPolicy();
void Release();
void ReleaseStatusArray();
HRESULT Init
(
Statement& stmt,
const std::vector<ParameterInfo>& param_info,
DBCOUNTITEM cBindings,
const DBBINDING rgBindings[],
DB_UPARAMS cParamSets,
DBLENGTH cbRowSize
);
HRESULT Init
(
Statement& stmt,
Schema* pSchema,
ULONG cRestrictions,
const VARIANT rgRestrictions[],
IDataConvert* pIDataConvert
);
virtual ULONG
GetFieldCount() const
{
assert(IsInitialized());
return (ULONG)m_cFieldInfos;
}
virtual const DataFieldInfo&
GetFieldInfo(ULONG iField) const
{
assert(IsInitialized());
assert(m_rgFieldInfos != NULL);
assert(iField < m_cFieldInfos);
return m_rgFieldInfos[iField];
}
ULONG
GetParamSets()
{
assert(IsInitialized());
return m_cParamSets;
}
bool
HasOutputParams()
{
assert(IsInitialized());
return m_fOutputParams;
}
char*
GetParamSetData(ULONG iParamSet)
{
assert(iParamSet < m_cParamSets && iParamSet >= 0);
return m_pbParamSets + iParamSet * GetRecordSize();
}
virtual HRESULT SetDataAtExec(HROW iRecordID, DBORDINAL iFieldOrdinal, SQLSMALLINT wSqlCType, DBCOUNTITEM iBinding);
virtual HRESULT GetDataAtExec(HROW& iRecordID, DBCOUNTITEM& iBinding);
virtual HRESULT PutDataAtExec(char* pv, SQLINTEGER cb);
HRESULT
BackupData(char*& pbBackupData)
{
size_t size = m_cParamSets * GetRecordSize();
pbBackupData = new char[size];
if (pbBackupData == NULL)
return ErrorInfo::Set(E_OUTOFMEMORY);
memcpy(pbBackupData, m_pbParamSets, size);
return S_OK;
}
void
RestoreData(char* pbBackupData)
{
memcpy(m_pbParamSets, pbBackupData, m_cParamSets * GetRecordSize());
}
HRESULT GetStatus(ULONG param_set, const DataAccessor& accessor, char* consumer_data);
void UnsetStatus();
static HRESULT GetParamsInfo(Statement& stmt, std::vector<ParameterInfo>& params_info);
private:
HRESULT InitInfo(DBORDINAL cParams);
Statement m_statement;
DBORDINAL m_cFieldInfos;
ParameterInfo* m_rgFieldInfos;
SQLUINTEGER m_cParamSets;
SQLUINTEGER m_cParamSetsProcessed;
char* m_pbParamSets;
SQLUSMALLINT* m_rgParamSetStatus;
bool m_fOutputParams;
};
#endif
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