www.pudn.com > StuMis.rar > ado2.cpp
//
// MODULE: Ado2.cpp
//
// AUTHOR: Carlos Antollini
//
// mailto: cantollini@hotmail.com
//
// Date: 07/02/2003
//
// Version 2.10
//
#include "stdafx.h"
#include "ado2.h"
#define ChunkSize 100
BOOL CJetEngine::CCompactDatabase(CString strDatabaseSource, CString strDatabaseDestination)
{
try
{
::CoInitialize(NULL);
IJetEnginePtr jet(__uuidof(JetEngine));
HRESULT hr = jet->CompactDatabase(_bstr_t(strDatabaseSource.GetBuffer(0)), _bstr_t(strDatabaseDestination.GetBuffer(0)));
::CoUninitialize();
return hr == S_OK;
}
catch(_com_error &e)
{
::CoUninitialize();
return FALSE;
}
}
///////////////////////////////////////////////////////
//
// CADODatabase Class
//
DWORD CADODatabase::GetRecordCount(_RecordsetPtr m_pRs)
{
DWORD numRows = 0;
numRows = m_pRs->GetRecordCount();
if(numRows == -1)
{
if(m_pRs->EndOfFile != VARIANT_TRUE)
m_pRs->MoveFirst();
while(m_pRs->EndOfFile != VARIANT_TRUE)
{
numRows++;
m_pRs->MoveNext();
}
if(numRows > 0)
m_pRs->MoveFirst();
}
return numRows;
}
BOOL CADODatabase::Open(LPCTSTR lpstrConnection, LPCTSTR lpstrUserID, LPCTSTR lpstrPassword)
{
HRESULT hr = S_OK;
if(IsOpen())
Close();
if(strcmp(lpstrConnection, _T("")) != 0)
m_strConnection = lpstrConnection;
ASSERT(!m_strConnection.IsEmpty());
try
{
if(m_nConnectionTimeout != 0)
m_pConnection->PutConnectionTimeout(m_nConnectionTimeout);
hr = m_pConnection->Open(_bstr_t(m_strConnection), _bstr_t(lpstrUserID), _bstr_t(lpstrPassword), NULL);
return hr == S_OK;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
void CADODatabase::dump_com_error(_com_error &e)
{
CString ErrorStr;
_bstr_t bstrSource(e.Source());
_bstr_t bstrDescription(e.Description());
ErrorStr.Format( "CADODataBase Error\n\tCode = %08lx\n\tCode meaning = %s\n\tSource = %s\n\tDescription = %s\n",
e.Error(), e.ErrorMessage(), (LPCSTR)bstrSource, (LPCSTR)bstrDescription);
m_strErrorDescription = (LPCSTR)bstrDescription ;
m_strLastError = _T("Connection String = " + GetConnectionString() + '\n' + ErrorStr);
m_dwLastError = e.Error();
#ifdef _DEBUG
AfxMessageBox(ErrorStr, MB_OK | MB_ICONERROR );
#endif
}
BOOL CADODatabase::IsOpen()
{
if(m_pConnection )
return m_pConnection->GetState() != adStateClosed;
return FALSE;
}
void CADODatabase::Close()
{
if(IsOpen())
m_pConnection->Close();
}
///////////////////////////////////////////////////////
//
// CADORecordset Class
//
CADORecordset::CADORecordset()
{
m_pRecordset = NULL;
m_pCmd = NULL;
m_strQuery = _T("");
m_strLastError = _T("");
m_dwLastError = 0;
m_pRecBinding = NULL;
m_pRecordset.CreateInstance(__uuidof(Recordset));
m_pCmd.CreateInstance(__uuidof(Command));
m_nEditStatus = CADORecordset::dbEditNone;
m_nSearchDirection = CADORecordset::searchForward;
}
CADORecordset::CADORecordset(CADODatabase* pAdoDatabase)
{
m_pRecordset = NULL;
m_pCmd = NULL;
m_strQuery = _T("");
m_strLastError = _T("");
m_dwLastError = 0;
m_pRecBinding = NULL;
m_pRecordset.CreateInstance(__uuidof(Recordset));
m_pCmd.CreateInstance(__uuidof(Command));
m_nEditStatus = CADORecordset::dbEditNone;
m_nSearchDirection = CADORecordset::searchForward;
m_pConnection = pAdoDatabase->GetActiveConnection();
}
BOOL CADORecordset::Open(_ConnectionPtr mpdb, LPCTSTR lpstrExec, int nOption)
{
Close();
if(strcmp(lpstrExec, _T("")) != 0)
m_strQuery = lpstrExec;
ASSERT(!m_strQuery.IsEmpty());
if(m_pConnection == NULL)
m_pConnection = mpdb;
m_strQuery.TrimLeft();
BOOL bIsSelect = m_strQuery.Mid(0, strlen("Select ")).CompareNoCase("select ") == 0 && nOption == openUnknown;
try
{
m_pRecordset->CursorType = adOpenStatic;
m_pRecordset->CursorLocation = adUseClient;
if(bIsSelect || nOption == openQuery || nOption == openUnknown)
m_pRecordset->Open((LPCSTR)m_strQuery, _variant_t((IDispatch*)mpdb, TRUE),
adOpenStatic, adLockOptimistic, adCmdUnknown);
else if(nOption == openTable)
m_pRecordset->Open((LPCSTR)m_strQuery, _variant_t((IDispatch*)mpdb, TRUE),
adOpenKeyset, adLockOptimistic, adCmdTable);
else if(nOption == openStoredProc)
{
m_pCmd->ActiveConnection = mpdb;
m_pCmd->CommandText = _bstr_t(m_strQuery);
m_pCmd->CommandType = adCmdStoredProc;
m_pConnection->CursorLocation = adUseClient;
m_pRecordset = m_pCmd->Execute(NULL, NULL, adCmdText);
}
else
{
TRACE( "Unknown parameter. %d", nOption);
return FALSE;
}
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
return m_pRecordset != NULL;
}
BOOL CADORecordset::Open(LPCTSTR lpstrExec, int nOption)
{
ASSERT(m_pConnection != NULL);
ASSERT(m_pConnection->GetState() != adStateClosed);
return Open(m_pConnection, lpstrExec, nOption);
}
BOOL CADORecordset::OpenSchema(int nSchema, LPCTSTR SchemaID)
{
try
{
_variant_t vtSchemaID = vtMissing;
if(strlen(SchemaID) != 0)
vtSchemaID = SchemaID;
m_pRecordset = m_pConnection->OpenSchema((enum SchemaEnum)nSchema, vtMissing, vtSchemaID);
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::Requery()
{
if(IsOpen())
{
try
{
m_pRecordset->Requery(adExecuteRecord);
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
return TRUE;
}
BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, double& dbValue)
{
double val = (double)NULL;
_variant_t vtFld;
try
{
vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
switch(vtFld.vt)
{
case VT_R4:
val = vtFld.fltVal;
break;
case VT_R8:
val = vtFld.dblVal;
break;
case VT_DECIMAL:
//Corrected by José Carlos Martínez Galán
val = vtFld.decVal.Lo32;
val *= (vtFld.decVal.sign == 128)? -1 : 1;
val /= pow(10, vtFld.decVal.scale);
break;
case VT_UI1:
val = vtFld.iVal;
break;
case VT_I2:
case VT_I4:
val = vtFld.lVal;
break;
case VT_INT:
val = vtFld.intVal;
break;
case VT_NULL:
case VT_EMPTY:
val = 0;
break;
default:
val = vtFld.dblVal;
}
dbValue = val;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(int nIndex, double& dbValue)
{
double val = (double)NULL;
_variant_t vtFld;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
try
{
vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
switch(vtFld.vt)
{
case VT_R4:
val = vtFld.fltVal;
break;
case VT_R8:
val = vtFld.dblVal;
break;
case VT_DECIMAL:
//Corrected by José Carlos Martínez Galán
val = vtFld.decVal.Lo32;
val *= (vtFld.decVal.sign == 128)? -1 : 1;
val /= pow(10, vtFld.decVal.scale);
break;
case VT_UI1:
val = vtFld.iVal;
break;
case VT_I2:
case VT_I4:
val = vtFld.lVal;
break;
case VT_INT:
val = vtFld.intVal;
break;
case VT_NULL:
case VT_EMPTY:
val = 0;
break;
default:
val = 0;
}
dbValue = val;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, long& lValue)
{
long val = (long)NULL;
_variant_t vtFld;
try
{
vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
if(vtFld.vt != VT_NULL && vtFld.vt != VT_EMPTY)
val = vtFld.lVal;
lValue = val;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(int nIndex, long& lValue)
{
long val = (long)NULL;
_variant_t vtFld;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
try
{
vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
if(vtFld.vt != VT_NULL && vtFld.vt != VT_EMPTY)
val = vtFld.lVal;
lValue = val;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, unsigned long& ulValue)
{
long val = (long)NULL;
_variant_t vtFld;
try
{
vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
if(vtFld.vt != VT_NULL && vtFld.vt != VT_EMPTY)
val = vtFld.ulVal;
ulValue = val;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(int nIndex, unsigned long& ulValue)
{
long val = (long)NULL;
_variant_t vtFld;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
try
{
vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
if(vtFld.vt != VT_NULL && vtFld.vt != VT_EMPTY)
val = vtFld.ulVal;
ulValue = val;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, int& nValue)
{
int val = NULL;
_variant_t vtFld;
try
{
vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
switch(vtFld.vt)
{
case VT_BOOL:
val = vtFld.boolVal;
break;
case VT_I2:
case VT_UI1:
val = vtFld.iVal;
break;
case VT_INT:
val = vtFld.intVal;
break;
case VT_NULL:
case VT_EMPTY:
val = 0;
break;
default:
val = vtFld.iVal;
}
nValue = val;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(int nIndex, int& nValue)
{
int val = (int)NULL;
_variant_t vtFld;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
try
{
vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
switch(vtFld.vt)
{
case VT_BOOL:
val = vtFld.boolVal;
break;
case VT_I2:
case VT_UI1:
val = vtFld.iVal;
break;
case VT_INT:
val = vtFld.intVal;
break;
case VT_NULL:
case VT_EMPTY:
val = 0;
break;
default:
val = vtFld.iVal;
}
nValue = val;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, CString& strValue, CString strDateFormat)
{
CString str = _T("");
_variant_t vtFld;
try
{
vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
switch(vtFld.vt)
{
case VT_R4:
str = DblToStr(vtFld.fltVal);
break;
case VT_R8:
str = DblToStr(vtFld.dblVal);
break;
case VT_BSTR:
str = vtFld.bstrVal;
break;
case VT_I2:
case VT_UI1:
str = IntToStr(vtFld.iVal);
break;
case VT_INT:
str = IntToStr(vtFld.intVal);
break;
case VT_I4:
str = LongToStr(vtFld.lVal);
break;
case VT_UI4:
str = ULongToStr(vtFld.ulVal);
break;
case VT_DECIMAL:
{
//Corrected by José Carlos Martínez Galán
double val = vtFld.decVal.Lo32;
val *= (vtFld.decVal.sign == 128)? -1 : 1;
val /= pow(10, vtFld.decVal.scale);
str = DblToStr(val);
}
break;
case VT_DATE:
{
COleDateTime dt(vtFld);
if(strDateFormat.IsEmpty())
strDateFormat = _T("%Y-%m-%d %H:%M:%S");
str = dt.Format(strDateFormat);
}
break;
case VT_EMPTY:
case VT_NULL:
str.Empty();
break;
case VT_BOOL:
str = vtFld.boolVal == VARIANT_TRUE? 'T':'F';
break;
default:
str.Empty();
return FALSE;
}
strValue = str;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(int nIndex, CString& strValue, CString strDateFormat)
{
CString str = _T("");
_variant_t vtFld;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
try
{
vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
switch(vtFld.vt)
{
case VT_R4:
str = DblToStr(vtFld.fltVal);
break;
case VT_R8:
str = DblToStr(vtFld.dblVal);
break;
case VT_BSTR:
str = vtFld.bstrVal;
break;
case VT_I2:
case VT_UI1:
str = IntToStr(vtFld.iVal);
break;
case VT_INT:
str = IntToStr(vtFld.intVal);
break;
case VT_I4:
str = LongToStr(vtFld.lVal);
break;
case VT_UI4:
str = ULongToStr(vtFld.ulVal);
break;
case VT_DECIMAL:
{
//Corrected by José Carlos Martínez Galán
double val = vtFld.decVal.Lo32;
val *= (vtFld.decVal.sign == 128)? -1 : 1;
val /= pow(10, vtFld.decVal.scale);
str = DblToStr(val);
}
break;
case VT_DATE:
{
COleDateTime dt(vtFld);
if(strDateFormat.IsEmpty())
strDateFormat = _T("%Y-%m-%d %H:%M:%S");
str = dt.Format(strDateFormat);
}
break;
case VT_BOOL:
str = vtFld.boolVal == VARIANT_TRUE? 'T':'F';
break;
case VT_EMPTY:
case VT_NULL:
str.Empty();
break;
default:
str.Empty();
return FALSE;
}
strValue = str;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, COleDateTime& time)
{
_variant_t vtFld;
try
{
vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
switch(vtFld.vt)
{
case VT_DATE:
{
COleDateTime dt(vtFld);
time = dt;
}
break;
case VT_EMPTY:
case VT_NULL:
time.SetStatus(COleDateTime::null);
break;
default:
return FALSE;
}
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(int nIndex, COleDateTime& time)
{
_variant_t vtFld;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
try
{
vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
switch(vtFld.vt)
{
case VT_DATE:
{
COleDateTime dt(vtFld);
time = dt;
}
break;
case VT_EMPTY:
case VT_NULL:
time.SetStatus(COleDateTime::null);
break;
default:
return FALSE;
}
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, bool& bValue)
{
_variant_t vtFld;
try
{
vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
switch(vtFld.vt)
{
case VT_BOOL:
bValue = vtFld.boolVal == VARIANT_TRUE? true: false;
break;
case VT_EMPTY:
case VT_NULL:
bValue = false;
break;
default:
return FALSE;
}
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(int nIndex, bool& bValue)
{
_variant_t vtFld;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
try
{
vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
switch(vtFld.vt)
{
case VT_BOOL:
bValue = vtFld.boolVal == VARIANT_TRUE? true: false;
break;
case VT_EMPTY:
case VT_NULL:
bValue = false;
break;
default:
return FALSE;
}
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, COleCurrency& cyValue)
{
_variant_t vtFld;
try
{
vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
switch(vtFld.vt)
{
case VT_CY:
cyValue = (CURRENCY)vtFld.cyVal;
break;
case VT_EMPTY:
case VT_NULL:
{
cyValue = COleCurrency();
cyValue.m_status = COleCurrency::null;
}
break;
default:
return FALSE;
}
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(int nIndex, COleCurrency& cyValue)
{
_variant_t vtFld;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
try
{
vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
switch(vtFld.vt)
{
case VT_CY:
cyValue = (CURRENCY)vtFld.cyVal;
break;
case VT_EMPTY:
case VT_NULL:
{
cyValue = COleCurrency();
cyValue.m_status = COleCurrency::null;
}
break;
default:
return FALSE;
}
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(LPCTSTR lpFieldName, _variant_t& vtValue)
{
try
{
vtValue = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::GetFieldValue(int nIndex, _variant_t& vtValue)
{
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
try
{
vtValue = m_pRecordset->Fields->GetItem(vtIndex)->Value;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::IsFieldNull(LPCTSTR lpFieldName)
{
_variant_t vtFld;
try
{
vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
return vtFld.vt == VT_NULL;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::IsFieldNull(int nIndex)
{
_variant_t vtFld;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
try
{
vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
return vtFld.vt == VT_NULL;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::IsFieldEmpty(LPCTSTR lpFieldName)
{
_variant_t vtFld;
try
{
vtFld = m_pRecordset->Fields->GetItem(lpFieldName)->Value;
return vtFld.vt == VT_EMPTY || vtFld.vt == VT_NULL;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::IsFieldEmpty(int nIndex)
{
_variant_t vtFld;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
try
{
vtFld = m_pRecordset->Fields->GetItem(vtIndex)->Value;
return vtFld.vt == VT_EMPTY || vtFld.vt == VT_NULL;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::SetFieldEmpty(LPCTSTR lpFieldName)
{
_variant_t vtFld;
vtFld.vt = VT_EMPTY;
return PutFieldValue(lpFieldName, vtFld);
}
BOOL CADORecordset::SetFieldEmpty(int nIndex)
{
_variant_t vtFld;
vtFld.vt = VT_EMPTY;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
return PutFieldValue(vtIndex, vtFld);
}
DWORD CADORecordset::GetRecordCount()
{
DWORD nRows = 0;
nRows = m_pRecordset->GetRecordCount();
if(nRows == -1)
{
nRows = 0;
if(m_pRecordset->EndOfFile != VARIANT_TRUE)
m_pRecordset->MoveFirst();
while(m_pRecordset->EndOfFile != VARIANT_TRUE)
{
nRows++;
m_pRecordset->MoveNext();
}
if(nRows > 0)
m_pRecordset->MoveFirst();
}
return nRows;
}
BOOL CADORecordset::IsOpen()
{
if(m_pRecordset != NULL && IsConnectionOpen())
return m_pRecordset->GetState() != adStateClosed;
return FALSE;
}
void CADORecordset::Close()
{
if(IsOpen())
{
if (m_nEditStatus != dbEditNone)
CancelUpdate();
m_pRecordset->PutSort(_T(""));
m_pRecordset->Close();
}
}
BOOL CADODatabase::Execute(LPCTSTR lpstrExec)
{
ASSERT(m_pConnection != NULL);
ASSERT(strcmp(lpstrExec, _T("")) != 0);
_variant_t vRecords;
m_nRecordsAffected = 0;
try
{
m_pConnection->CursorLocation = adUseClient;
m_pConnection->Execute(_bstr_t(lpstrExec), &vRecords, adExecuteNoRecords);
m_nRecordsAffected = vRecords.iVal;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::RecordBinding(CADORecordBinding &pAdoRecordBinding)
{
HRESULT hr;
m_pRecBinding = NULL;
//Open the binding interface.
if(FAILED(hr = m_pRecordset->QueryInterface(__uuidof(IADORecordBinding), (LPVOID*)&m_pRecBinding )))
{
_com_issue_error(hr);
return FALSE;
}
//Bind the recordset to class
if(FAILED(hr = m_pRecBinding->BindToRecordset(&pAdoRecordBinding)))
{
_com_issue_error(hr);
return FALSE;
}
return TRUE;
}
BOOL CADORecordset::GetFieldInfo(LPCTSTR lpFieldName, CADOFieldInfo* fldInfo)
{
FieldPtr pField = m_pRecordset->Fields->GetItem(lpFieldName);
return GetFieldInfo(pField, fldInfo);
}
BOOL CADORecordset::GetFieldInfo(int nIndex, CADOFieldInfo* fldInfo)
{
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
FieldPtr pField = m_pRecordset->Fields->GetItem(vtIndex);
return GetFieldInfo(pField, fldInfo);
}
BOOL CADORecordset::GetFieldInfo(FieldPtr pField, CADOFieldInfo* fldInfo)
{
memset(fldInfo, 0, sizeof(CADOFieldInfo));
strcpy(fldInfo->m_strName, (LPCTSTR)pField->GetName());
fldInfo->m_lDefinedSize = pField->GetDefinedSize();
fldInfo->m_nType = pField->GetType();
fldInfo->m_lAttributes = pField->GetAttributes();
if(!IsEof())
fldInfo->m_lSize = pField->GetActualSize();
return TRUE;
}
BOOL CADORecordset::GetChunk(LPCTSTR lpFieldName, CString& strValue)
{
FieldPtr pField = m_pRecordset->Fields->GetItem(lpFieldName);
return GetChunk(pField, strValue);
}
BOOL CADORecordset::GetChunk(int nIndex, CString& strValue)
{
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
FieldPtr pField = m_pRecordset->Fields->GetItem(vtIndex);
return GetChunk(pField, strValue);
}
BOOL CADORecordset::GetChunk(FieldPtr pField, CString& strValue)
{
CString str = _T("");
long lngSize, lngOffSet = 0;
_variant_t varChunk;
lngSize = pField->ActualSize;
str.Empty();
while(lngOffSet < lngSize)
{
try
{
varChunk = pField->GetChunk(ChunkSize);
str += varChunk.bstrVal;
lngOffSet += ChunkSize;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
lngOffSet = 0;
strValue = str;
return TRUE;
}
BOOL CADORecordset::GetChunk(LPCTSTR lpFieldName, LPVOID lpData)
{
FieldPtr pField = m_pRecordset->Fields->GetItem(lpFieldName);
return GetChunk(pField, lpData);
}
BOOL CADORecordset::GetChunk(int nIndex, LPVOID lpData)
{
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
FieldPtr pField = m_pRecordset->Fields->GetItem(vtIndex);
return GetChunk(pField, lpData);
}
BOOL CADORecordset::GetChunk(FieldPtr pField, LPVOID lpData)
{
long lngSize, lngOffSet = 0;
_variant_t varChunk;
UCHAR chData;
HRESULT hr;
long lBytesCopied = 0;
lngSize = pField->ActualSize;
while(lngOffSet < lngSize)
{
try
{
varChunk = pField->GetChunk(ChunkSize);
//Copy the data only upto the Actual Size of Field.
for(long lIndex = 0; lIndex <= (ChunkSize - 1); lIndex++)
{
hr= SafeArrayGetElement(varChunk.parray, &lIndex, &chData);
if(SUCCEEDED(hr))
{
//Take BYTE by BYTE and advance Memory Location
//hr = SafeArrayPutElement((SAFEARRAY FAR*)lpData, &lBytesCopied ,&chData);
((UCHAR*)lpData)[lBytesCopied] = chData;
lBytesCopied++;
}
else
break;
}
lngOffSet += ChunkSize;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
lngOffSet = 0;
return TRUE;
}
BOOL CADORecordset::AppendChunk(LPCTSTR lpFieldName, LPVOID lpData, UINT nBytes)
{
FieldPtr pField = m_pRecordset->Fields->GetItem(lpFieldName);
return AppendChunk(pField, lpData, nBytes);
}
BOOL CADORecordset::AppendChunk(int nIndex, LPVOID lpData, UINT nBytes)
{
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
FieldPtr pField = m_pRecordset->Fields->GetItem(vtIndex);
return AppendChunk(pField, lpData, nBytes);
}
BOOL CADORecordset::AppendChunk(FieldPtr pField, LPVOID lpData, UINT nBytes)
{
HRESULT hr;
_variant_t varChunk;
long lngOffset = 0;
UCHAR chData;
SAFEARRAY FAR *psa = NULL;
SAFEARRAYBOUND rgsabound[1];
try
{
//Create a safe array to store the array of BYTES
rgsabound[0].lLbound = 0;
rgsabound[0].cElements = nBytes;
psa = SafeArrayCreate(VT_UI1,1,rgsabound);
while(lngOffset < (long)nBytes)
{
chData = ((UCHAR*)lpData)[lngOffset];
hr = SafeArrayPutElement(psa, &lngOffset, &chData);
if(FAILED(hr))
return FALSE;
lngOffset++;
}
lngOffset = 0;
//Assign the Safe array to a variant.
varChunk.vt = VT_ARRAY|VT_UI1;
varChunk.parray = psa;
hr = pField->AppendChunk(varChunk);
if(SUCCEEDED(hr)) return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
return FALSE;
}
CString CADORecordset::GetString(LPCTSTR lpCols, LPCTSTR lpRows, LPCTSTR lpNull, long numRows)
{
_bstr_t varOutput;
_bstr_t varNull("");
_bstr_t varCols("\t");
_bstr_t varRows("\r");
if(strlen(lpCols) != 0)
varCols = _bstr_t(lpCols);
if(strlen(lpRows) != 0)
varRows = _bstr_t(lpRows);
if(numRows == 0)
numRows =(long)GetRecordCount();
varOutput = m_pRecordset->GetString(adClipString, numRows, varCols, varRows, varNull);
return (LPCTSTR)varOutput;
}
CString IntToStr(int nVal)
{
CString strRet;
char buff[10];
itoa(nVal, buff, 10);
strRet = buff;
return strRet;
}
CString LongToStr(long lVal)
{
CString strRet;
char buff[20];
ltoa(lVal, buff, 10);
strRet = buff;
return strRet;
}
CString ULongToStr(unsigned long ulVal)
{
CString strRet;
char buff[20];
ultoa(ulVal, buff, 10);
strRet = buff;
return strRet;
}
CString DblToStr(double dblVal, int ndigits)
{
CString strRet;
char buff[50];
_gcvt(dblVal, ndigits, buff);
strRet = buff;
return strRet;
}
CString DblToStr(float fltVal)
{
CString strRet = _T("");
char buff[50];
_gcvt(fltVal, 10, buff);
strRet = buff;
return strRet;
}
void CADORecordset::Edit()
{
m_nEditStatus = dbEdit;
}
BOOL CADORecordset::AddNew()
{
m_nEditStatus = dbEditNone;
if(m_pRecordset->AddNew() != S_OK)
return FALSE;
m_nEditStatus = dbEditNew;
return TRUE;
}
BOOL CADORecordset::AddNew(CADORecordBinding &pAdoRecordBinding)
{
try
{
if(m_pRecBinding->AddNew(&pAdoRecordBinding) != S_OK)
{
return FALSE;
}
else
{
m_pRecBinding->Update(&pAdoRecordBinding);
return TRUE;
}
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::Update()
{
BOOL bret = TRUE;
if(m_nEditStatus != dbEditNone)
{
try
{
if(m_pRecordset->Update() != S_OK)
bret = FALSE;
}
catch(_com_error &e)
{
dump_com_error(e);
bret = FALSE;
}
if(!bret)
m_pRecordset->CancelUpdate();
m_nEditStatus = dbEditNone;
}
return bret;
}
void CADORecordset::CancelUpdate()
{
m_pRecordset->CancelUpdate();
m_nEditStatus = dbEditNone;
}
BOOL CADORecordset::SetFieldValue(int nIndex, CString strValue)
{
_variant_t vtFld;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
if(!strValue.IsEmpty())
vtFld.vt = VT_BSTR;
else
vtFld.vt = VT_NULL;
//Corrected by Giles Forster 10/03/2001
vtFld.bstrVal = strValue.AllocSysString();
return PutFieldValue(vtIndex, vtFld);
}
BOOL CADORecordset::SetFieldValue(LPCTSTR lpFieldName, CString strValue)
{
_variant_t vtFld;
if(!strValue.IsEmpty())
vtFld.vt = VT_BSTR;
else
vtFld.vt = VT_NULL;
//Corrected by Giles Forster 10/03/2001
vtFld.bstrVal = strValue.AllocSysString();
return PutFieldValue(lpFieldName, vtFld);
}
BOOL CADORecordset::SetFieldValue(int nIndex, int nValue)
{
_variant_t vtFld;
vtFld.vt = VT_I2;
vtFld.iVal = nValue;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
return PutFieldValue(vtIndex, vtFld);
}
BOOL CADORecordset::SetFieldValue(LPCTSTR lpFieldName, int nValue)
{
_variant_t vtFld;
vtFld.vt = VT_I2;
vtFld.iVal = nValue;
return PutFieldValue(lpFieldName, vtFld);
}
BOOL CADORecordset::SetFieldValue(int nIndex, long lValue)
{
_variant_t vtFld;
vtFld.vt = VT_I4;
vtFld.lVal = lValue;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
return PutFieldValue(vtIndex, vtFld);
}
BOOL CADORecordset::SetFieldValue(LPCTSTR lpFieldName, long lValue)
{
_variant_t vtFld;
vtFld.vt = VT_I4;
vtFld.lVal = lValue;
return PutFieldValue(lpFieldName, vtFld);
}
BOOL CADORecordset::SetFieldValue(int nIndex, unsigned long ulValue)
{
_variant_t vtFld;
vtFld.vt = VT_UI4;
vtFld.ulVal = ulValue;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
return PutFieldValue(vtIndex, vtFld);
}
BOOL CADORecordset::SetFieldValue(LPCTSTR lpFieldName, unsigned long ulValue)
{
_variant_t vtFld;
vtFld.vt = VT_UI4;
vtFld.ulVal = ulValue;
return PutFieldValue(lpFieldName, vtFld);
}
BOOL CADORecordset::SetFieldValue(int nIndex, double dblValue)
{
_variant_t vtFld;
vtFld.vt = VT_R8;
vtFld.dblVal = dblValue;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
return PutFieldValue(vtIndex, vtFld);
}
BOOL CADORecordset::SetFieldValue(LPCTSTR lpFieldName, double dblValue)
{
_variant_t vtFld;
vtFld.vt = VT_R8;
vtFld.dblVal = dblValue;
return PutFieldValue(lpFieldName, vtFld);
}
BOOL CADORecordset::SetFieldValue(int nIndex, COleDateTime time)
{
_variant_t vtFld;
vtFld.vt = VT_DATE;
vtFld.date = time;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
return PutFieldValue(vtIndex, vtFld);
}
BOOL CADORecordset::SetFieldValue(LPCTSTR lpFieldName, COleDateTime time)
{
_variant_t vtFld;
vtFld.vt = VT_DATE;
vtFld.date = time;
return PutFieldValue(lpFieldName, vtFld);
}
BOOL CADORecordset::SetFieldValue(int nIndex, bool bValue)
{
_variant_t vtFld;
vtFld.vt = VT_BOOL;
vtFld.boolVal = bValue;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
return PutFieldValue(vtIndex, vtFld);
}
BOOL CADORecordset::SetFieldValue(LPCTSTR lpFieldName, bool bValue)
{
_variant_t vtFld;
vtFld.vt = VT_BOOL;
vtFld.boolVal = bValue;
return PutFieldValue(lpFieldName, vtFld);
}
BOOL CADORecordset::SetFieldValue(int nIndex, COleCurrency cyValue)
{
if(cyValue.m_status == COleCurrency::invalid)
return FALSE;
_variant_t vtFld;
vtFld.vt = VT_CY;
vtFld.cyVal = cyValue.m_cur;
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
return PutFieldValue(vtIndex, vtFld);
}
BOOL CADORecordset::SetFieldValue(LPCTSTR lpFieldName, COleCurrency cyValue)
{
if(cyValue.m_status == COleCurrency::invalid)
return FALSE;
_variant_t vtFld;
vtFld.vt = VT_CY;
vtFld.cyVal = cyValue.m_cur;
return PutFieldValue(lpFieldName, vtFld);
}
BOOL CADORecordset::SetFieldValue(int nIndex, _variant_t vtValue)
{
_variant_t vtIndex;
vtIndex.vt = VT_I2;
vtIndex.iVal = nIndex;
return PutFieldValue(vtIndex, vtValue);
}
BOOL CADORecordset::SetFieldValue(LPCTSTR lpFieldName, _variant_t vtValue)
{
return PutFieldValue(lpFieldName, vtValue);
}
BOOL CADORecordset::SetBookmark()
{
if(m_varBookmark.vt != VT_EMPTY)
{
m_pRecordset->Bookmark = m_varBookmark;
return TRUE;
}
return FALSE;
}
BOOL CADORecordset::Delete()
{
if(m_pRecordset->Delete(adAffectCurrent) != S_OK)
return FALSE;
if(m_pRecordset->Update() != S_OK)
return FALSE;
m_nEditStatus = dbEditNone;
return TRUE;
}
BOOL CADORecordset::Find(LPCTSTR lpFind, int nSearchDirection)
{
m_strFind = lpFind;
m_nSearchDirection = nSearchDirection;
ASSERT(!m_strFind.IsEmpty());
if(m_nSearchDirection == searchForward)
{
m_pRecordset->Find(_bstr_t(m_strFind), 0, adSearchForward, "");
if(!IsEof())
{
m_varBookFind = m_pRecordset->Bookmark;
return TRUE;
}
}
else if(m_nSearchDirection == searchBackward)
{
m_pRecordset->Find(_bstr_t(m_strFind), 0, adSearchBackward, "");
if(!IsBof())
{
m_varBookFind = m_pRecordset->Bookmark;
return TRUE;
}
}
else
{
TRACE("Unknown parameter. %d", nSearchDirection);
m_nSearchDirection = searchForward;
}
return FALSE;
}
BOOL CADORecordset::FindFirst(LPCTSTR lpFind)
{
m_pRecordset->MoveFirst();
return Find(lpFind);
}
BOOL CADORecordset::FindNext()
{
if(m_nSearchDirection == searchForward)
{
m_pRecordset->Find(_bstr_t(m_strFind), 1, adSearchForward, m_varBookFind);
if(!IsEof())
{
m_varBookFind = m_pRecordset->Bookmark;
return TRUE;
}
}
else
{
m_pRecordset->Find(_bstr_t(m_strFind), 1, adSearchBackward, m_varBookFind);
if(!IsBof())
{
m_varBookFind = m_pRecordset->Bookmark;
return TRUE;
}
}
return FALSE;
}
BOOL CADORecordset::PutFieldValue(LPCTSTR lpFieldName, _variant_t vtFld)
{
if(m_nEditStatus == dbEditNone)
return FALSE;
try
{
m_pRecordset->Fields->GetItem(lpFieldName)->Value = vtFld;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::PutFieldValue(_variant_t vtIndex, _variant_t vtFld)
{
if(m_nEditStatus == dbEditNone)
return FALSE;
try
{
m_pRecordset->Fields->GetItem(vtIndex)->Value = vtFld;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::Clone(CADORecordset &pRs)
{
try
{
pRs.m_pRecordset = m_pRecordset->Clone(adLockUnspecified);
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::SetFilter(LPCTSTR strFilter)
{
ASSERT(IsOpen());
try
{
m_pRecordset->PutFilter(strFilter);
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::SetSort(LPCTSTR strCriteria)
{
ASSERT(IsOpen());
try
{
m_pRecordset->PutSort(strCriteria);
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::SaveAsXML(LPCTSTR lpstrXMLFile)
{
HRESULT hr;
ASSERT(IsOpen());
try
{
hr = m_pRecordset->Save(lpstrXMLFile, adPersistXML);
return hr == S_OK;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
return TRUE;
}
BOOL CADORecordset::OpenXML(LPCTSTR lpstrXMLFile)
{
HRESULT hr = S_OK;
if(IsOpen())
Close();
try
{
hr = m_pRecordset->Open(lpstrXMLFile, "Provider=MSPersist;", adOpenForwardOnly, adLockOptimistic, adCmdFile);
return hr == S_OK;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADORecordset::Execute(CADOCommand* pAdoCommand)
{
if(IsOpen())
Close();
ASSERT(!pAdoCommand->GetText().IsEmpty());
try
{
m_pConnection->CursorLocation = adUseClient;
m_pRecordset = pAdoCommand->GetCommand()->Execute(NULL, NULL, pAdoCommand->GetType());
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
void CADORecordset::dump_com_error(_com_error &e)
{
CString ErrorStr;
_bstr_t bstrSource(e.Source());
_bstr_t bstrDescription(e.Description());
ErrorStr.Format( "CADORecordset Error\n\tCode = %08lx\n\tCode meaning = %s\n\tSource = %s\n\tDescription = %s\n",
e.Error(), e.ErrorMessage(), (LPCSTR)bstrSource, (LPCSTR)bstrDescription );
m_strLastError = _T("Query = " + GetQuery() + '\n' + ErrorStr);
m_dwLastError = e.Error();
#ifdef _DEBUG
AfxMessageBox( ErrorStr, MB_OK | MB_ICONERROR );
#endif
}
///////////////////////////////////////////////////////
//
// CADOCommad Class
//
CADOCommand::CADOCommand(CADODatabase* pAdoDatabase, CString strCommandText, int nCommandType)
{
m_pCommand = NULL;
m_pCommand.CreateInstance(__uuidof(Command));
m_strCommandText = strCommandText;
m_pCommand->CommandText = m_strCommandText.AllocSysString();
m_nCommandType = nCommandType;
m_pCommand->CommandType = (CommandTypeEnum)m_nCommandType;
m_pCommand->ActiveConnection = pAdoDatabase->GetActiveConnection();
m_nRecordsAffected = 0;
}
BOOL CADOCommand::AddParameter(CADOParameter* pAdoParameter)
{
ASSERT(pAdoParameter->GetParameter() != NULL);
try
{
m_pCommand->Parameters->Append(pAdoParameter->GetParameter());
return TRUE;
}
catch(_com_error& e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOCommand::AddParameter(CString strName, int nType, int nDirection, long lSize, int nValue)
{
_variant_t vtValue;
vtValue.vt = VT_I2;
vtValue.iVal = nValue;
return AddParameter(strName, nType, nDirection, lSize, vtValue);
}
BOOL CADOCommand::AddParameter(CString strName, int nType, int nDirection, long lSize, long lValue)
{
_variant_t vtValue;
vtValue.vt = VT_I4;
vtValue.lVal = lValue;
return AddParameter(strName, nType, nDirection, lSize, vtValue);
}
BOOL CADOCommand::AddParameter(CString strName, int nType, int nDirection, long lSize, double dblValue, int nPrecision, int nScale)
{
_variant_t vtValue;
vtValue.vt = VT_R8;
vtValue.dblVal = dblValue;
return AddParameter(strName, nType, nDirection, lSize, vtValue, nPrecision, nScale);
}
BOOL CADOCommand::AddParameter(CString strName, int nType, int nDirection, long lSize, CString strValue)
{
_variant_t vtValue;
vtValue.vt = VT_BSTR;
vtValue.bstrVal = strValue.AllocSysString();
return AddParameter(strName, nType, nDirection, lSize, vtValue);
}
BOOL CADOCommand::AddParameter(CString strName, int nType, int nDirection, long lSize, COleDateTime time)
{
_variant_t vtValue;
vtValue.vt = VT_DATE;
vtValue.date = time;
return AddParameter(strName, nType, nDirection, lSize, vtValue);
}
BOOL CADOCommand::AddParameter(CString strName, int nType, int nDirection, long lSize, _variant_t vtValue, int nPrecision, int nScale)
{
try
{
_ParameterPtr pParam = m_pCommand->CreateParameter(strName.AllocSysString(), (DataTypeEnum)nType, (ParameterDirectionEnum)nDirection, lSize, vtValue);
pParam->PutPrecision(nPrecision);
pParam->PutNumericScale(nScale);
m_pCommand->Parameters->Append(pParam);
return TRUE;
}
catch(_com_error& e)
{
dump_com_error(e);
return FALSE;
}
}
void CADOCommand::SetText(CString strCommandText)
{
ASSERT(!strCommandText.IsEmpty());
m_strCommandText = strCommandText;
m_pCommand->CommandText = m_strCommandText.AllocSysString();
}
void CADOCommand::SetType(int nCommandType)
{
m_nCommandType = nCommandType;
m_pCommand->CommandType = (CommandTypeEnum)m_nCommandType;
}
BOOL CADOCommand::Execute()
{
_variant_t vRecords;
m_nRecordsAffected = 0;
try
{
m_pCommand->Execute(&vRecords, NULL, adCmdStoredProc);
m_nRecordsAffected = vRecords.iVal;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
void CADOCommand::dump_com_error(_com_error &e)
{
CString ErrorStr;
_bstr_t bstrSource(e.Source());
_bstr_t bstrDescription(e.Description());
ErrorStr.Format( "CADOCommand Error\n\tCode = %08lx\n\tCode meaning = %s\n\tSource = %s\n\tDescription = %s\n",
e.Error(), e.ErrorMessage(), (LPCSTR)bstrSource, (LPCSTR)bstrDescription );
m_strLastError = ErrorStr;
m_dwLastError = e.Error();
#ifdef _DEBUG
AfxMessageBox(ErrorStr, MB_OK | MB_ICONERROR);
#endif
}
///////////////////////////////////////////////////////
//
// CADOParameter Class
//
CADOParameter::CADOParameter(int nType, long lSize, int nDirection, CString strName)
{
m_pParameter = NULL;
m_pParameter.CreateInstance(__uuidof(Parameter));
m_strName = _T("");
m_pParameter->Direction = (ParameterDirectionEnum)nDirection;
m_strName = strName;
m_pParameter->Name = m_strName.AllocSysString();
m_pParameter->Type = (DataTypeEnum)nType;
m_pParameter->Size = lSize;
m_nType = nType;
}
BOOL CADOParameter::SetValue(int nValue)
{
_variant_t vtVal;
ASSERT(m_pParameter != NULL);
vtVal.vt = VT_I2;
vtVal.iVal = nValue;
try
{
if(m_pParameter->Size == 0)
m_pParameter->Size = sizeof(int);
m_pParameter->Value = vtVal;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOParameter::SetValue(long lValue)
{
_variant_t vtVal;
ASSERT(m_pParameter != NULL);
vtVal.vt = VT_I4;
vtVal.lVal = lValue;
try
{
if(m_pParameter->Size == 0)
m_pParameter->Size = sizeof(long);
m_pParameter->Value = vtVal;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOParameter::SetValue(double dblValue)
{
_variant_t vtVal;
ASSERT(m_pParameter != NULL);
vtVal.vt = VT_R8;
vtVal.dblVal = dblValue;
try
{
if(m_pParameter->Size == 0)
m_pParameter->Size = sizeof(double);
m_pParameter->Value = vtVal;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOParameter::SetValue(CString strValue)
{
_variant_t vtVal;
ASSERT(m_pParameter != NULL);
if(!strValue.IsEmpty())
vtVal.vt = VT_BSTR;
else
vtVal.vt = VT_NULL;
//Corrected by Giles Forster 10/03/2001
vtVal.bstrVal = strValue.AllocSysString();
try
{
if(m_pParameter->Size == 0)
m_pParameter->Size = sizeof(char) * strValue.GetLength();
m_pParameter->Value = vtVal;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOParameter::SetValue(COleDateTime time)
{
_variant_t vtVal;
ASSERT(m_pParameter != NULL);
vtVal.vt = VT_DATE;
vtVal.date = time;
try
{
if(m_pParameter->Size == 0)
m_pParameter->Size = sizeof(DATE);
m_pParameter->Value = vtVal;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOParameter::SetValue(_variant_t vtValue)
{
ASSERT(m_pParameter != NULL);
try
{
if(m_pParameter->Size == 0)
m_pParameter->Size = sizeof(VARIANT);
m_pParameter->Value = vtValue;
return TRUE;
}
catch(_com_error &e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOParameter::GetValue(int& nValue)
{
_variant_t vtVal;
int nVal = 0;
try
{
vtVal = m_pParameter->Value;
switch(vtVal.vt)
{
case VT_BOOL:
nVal = vtVal.boolVal;
break;
case VT_I2:
case VT_UI1:
nVal = vtVal.iVal;
break;
case VT_INT:
nVal = vtVal.intVal;
break;
case VT_NULL:
case VT_EMPTY:
nVal = 0;
break;
default:
nVal = vtVal.iVal;
}
nValue = nVal;
return TRUE;
}
catch(_com_error& e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOParameter::GetValue(long& lValue)
{
_variant_t vtVal;
long lVal = 0;
try
{
vtVal = m_pParameter->Value;
if(vtVal.vt != VT_NULL && vtVal.vt != VT_EMPTY)
lVal = vtVal.lVal;
lValue = lVal;
return TRUE;
}
catch(_com_error& e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOParameter::GetValue(double& dbValue)
{
_variant_t vtVal;
double dblVal;
try
{
vtVal = m_pParameter->Value;
switch(vtVal.vt)
{
case VT_R4:
dblVal = vtVal.fltVal;
break;
case VT_R8:
dblVal = vtVal.dblVal;
break;
case VT_DECIMAL:
//Corrected by José Carlos Martínez Galán
dblVal = vtVal.decVal.Lo32;
dblVal *= (vtVal.decVal.sign == 128)? -1 : 1;
dblVal /= pow(10, vtVal.decVal.scale);
break;
case VT_UI1:
dblVal = vtVal.iVal;
break;
case VT_I2:
case VT_I4:
dblVal = vtVal.lVal;
break;
case VT_INT:
dblVal = vtVal.intVal;
break;
case VT_NULL:
case VT_EMPTY:
dblVal = 0;
break;
default:
dblVal = 0;
}
dbValue = dblVal;
return TRUE;
}
catch(_com_error& e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOParameter::GetValue(CString& strValue, CString strDateFormat)
{
_variant_t vtVal;
CString strVal = _T("");
try
{
vtVal = m_pParameter->Value;
switch(vtVal.vt)
{
case VT_R4:
strVal = DblToStr(vtVal.fltVal);
break;
case VT_R8:
strVal = DblToStr(vtVal.dblVal);
break;
case VT_BSTR:
strVal = vtVal.bstrVal;
break;
case VT_I2:
case VT_UI1:
strVal = IntToStr(vtVal.iVal);
break;
case VT_INT:
strVal = IntToStr(vtVal.intVal);
break;
case VT_I4:
strVal = LongToStr(vtVal.lVal);
break;
case VT_DECIMAL:
{
//Corrected by José Carlos Martínez Galán
double val = vtVal.decVal.Lo32;
val *= (vtVal.decVal.sign == 128)? -1 : 1;
val /= pow(10, vtVal.decVal.scale);
strVal = DblToStr(val);
}
break;
case VT_DATE:
{
COleDateTime dt(vtVal);
if(strDateFormat.IsEmpty())
strDateFormat = _T("%Y-%m-%d %H:%M:%S");
strVal = dt.Format(strDateFormat);
}
break;
case VT_EMPTY:
case VT_NULL:
strVal.Empty();
break;
default:
strVal.Empty();
return FALSE;
}
strValue = strVal;
return TRUE;
}
catch(_com_error& e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOParameter::GetValue(COleDateTime& time)
{
_variant_t vtVal;
try
{
vtVal = m_pParameter->Value;
switch(vtVal.vt)
{
case VT_DATE:
{
COleDateTime dt(vtVal);
time = dt;
}
break;
case VT_EMPTY:
case VT_NULL:
time.SetStatus(COleDateTime::null);
break;
default:
return FALSE;
}
return TRUE;
}
catch(_com_error& e)
{
dump_com_error(e);
return FALSE;
}
}
BOOL CADOParameter::GetValue(_variant_t& vtValue)
{
try
{
vtValue = m_pParameter->Value;
return TRUE;
}
catch(_com_error& e)
{
dump_com_error(e);
return FALSE;
}
}
void CADOParameter::dump_com_error(_com_error &e)
{
CString ErrorStr;
_bstr_t bstrSource(e.Source());
_bstr_t bstrDescription(e.Description());
ErrorStr.Format( "CADOParameter Error\n\tCode = %08lx\n\tCode meaning = %s\n\tSource = %s\n\tDescription = %s\n",
e.Error(), e.ErrorMessage(), (LPCSTR)bstrSource, (LPCSTR)bstrDescription );
m_strLastError = ErrorStr;
m_dwLastError = e.Error();
#ifdef _DEBUG
AfxMessageBox(ErrorStr, MB_OK | MB_ICONERROR);
#endif
}
IMPLEMENT_DYNAMIC(CADOException, CException)
CADOException::CADOException(int nCause, CString strErrorString) : CException(TRUE)
{
m_nCause = nCause;
m_strErrorString = strErrorString;
}
CADOException::~CADOException()
{
}
int CADOException::GetError(int nADOError)
{
switch (nADOError)
{
case noError:
return CADOException::noError;
break;
default:
return CADOException::Unknown;
}
}
void AfxThrowADOException(int nADOError, CString strErrorString)
{
throw new CADOException(nADOError, strErrorString);
}