CString CFoxBase::CreateTableSQL(_RecordsetPtr &IRecord,LPCTSTR pTableName)
{
short Item;
CString CreateSQL;
CString DefList;
FieldsPtr IFields;
FieldPtr IField;
CreateSQL=_T("");
if(IRecord==NULL)
{
ExceptionInfo(_T("Recordset interface cann't be NULL"));
return CreateSQL;
}
if(pTableName==NULL)
{
ExceptionInfo(_T("Table name cann't be NULL"));
return CreateSQL;
}
IRecord->get_Fields(&IFields);
DefList=_T("");
for(Item=0;Item<IFields->GetCount();Item++)
{
IFields->get_Item(_variant_t(Item),&IField);
DefList+=IField->GetName();
DefList+=_T(" ");
switch(IField->GetType())
{
case adVarWChar:
{
CString Temp;
Temp.Format(_T("varchar(%d)"),IField->GetDefinedSize());
DefList+=Temp;
break;
}
case adLongVarWChar:
DefList+=_T("text");
break;
case adVarBinary:
{
CString Temp;
Temp.Format(_T("varbinary(%d)"),IField->GetDefinedSize());
DefList+=Temp;
break;
}
// case adNumeric:
// case adGUID:
// case adLongVarBinary:
// {
// ExceptionInfo(_T("不支持LongVarBinary"));
// return CreateSQL;
// }
// break;
case adInteger:
DefList+=_T("int");
break;
case adUnsignedTinyInt:
case adSmallInt:
DefList+=_T("smallint");
break;
case adSingle:
case adDouble:
DefList+=_T("float");
break;
case adDBTimeStamp:
case adDate:
DefList+=_T("date");
break;
// case adBoolean:
// break;
default:
{
ExceptionInfo(_T("不支持此类型"));
return CreateSQL;
}
}
if(Item < IFields->GetCount()-1)
{
DefList+=_T(",");
}
IField.Release();
}
CreateSQL.Format(_T("CREATE TABLE %s(%s)"),pTableName,DefList);
return CreateSQL;
}
BOOL CFoxBase::CopyData(_RecordsetPtr &IRecordS, _RecordsetPtr &IRecordD)
{
_variant_t TempValue;
short Item;
FieldsPtr IFields;
FieldPtr IField;
if(IRecordS==NULL || IRecordD==NULL)
{
ExceptionInfo(_T("Source Recordset or destination Recordset cann't be empty"));
return FALSE;
}
if(IRecordS->adoEOF && IRecordS->BOF)
{
return TRUE;
}
if(!IRecordD->adoEOF || !IRecordD->BOF)
{
try
{
IRecordD->MoveLast();
}
catch(_com_error &e)
{
ExceptionInfo(e);
return FALSE;
}
}
try
{
IRecordS->MoveFirst();
}
catch(_com_error &e)
{
ExceptionInfo(e);
return FALSE;
}
try
{
while(!IRecordS->adoEOF)
{
IRecordS->get_Fields(&IFields);
IRecordD->AddNew();
for(Item=0;Item<IFields->GetCount();Item++)
{
IFields->get_Item(_variant_t(Item),&IField);
TempValue=IRecordS->GetCollect(_variant_t(IField->GetName()));
IRecordD->PutCollect(_variant_t(IField->GetName()),TempValue);
IField.Release();
}
IRecordD->Update();
IFields.Release();
IRecordS->MoveNext();
}
}
catch(_com_error &e)
{
ExceptionInfo(e);
return FALSE;
}
return TRUE;
}
/////////////////////////////////////////////////////
//
// 在记录集的当前位置插入一条新记录
//
// IRecord[in] 记录集智能指针
//
// 函数成功返回TRUE，否则返回FALSE
// 如果有异常将调用ExceptionInfo函数
//
// 函数成功后记录集将指向新插入的空记录
//
BOOL CFoxBase::InsertNew(_RecordsetPtr &IRecord,int after)
{
int pos;
CMap<short,short&,_variant_t,_variant_t&> FieldMap;
CMap<short,short&,_variant_t,_variant_t&> newFieldMap; //将新增加的记录的值记下来
_variant_t TempValue;
short Item;
FieldsPtr IFields;
FieldPtr IField;
int pos1;
int nCount; //字段个数.
if(IRecord==NULL)
{
ExceptionInfo(_T("Recordset cann't be empty"));
return FALSE;
}
//如果记录集为空将插入一条新记录
if(IRecord->adoEOF && IRecord->BOF)
{
try
{
IRecord->AddNew();
IRecord->Update();
}
catch(_com_error &e)
{
ExceptionInfo(e);
return FALSE;
}
return TRUE;
}
else if(IRecord->adoEOF)
{
IRecord->AddNew();
IRecord->Update();
IRecord->MoveLast();
return true;
}
for(pos=0; !IRecord->adoEOF ;pos++)
{
try
{
IRecord->MoveNext();
}
catch(_com_error &e)
{
ExceptionInfo(e);
return FALSE;
}
}
//
// 查如一条新记录，并将刚开始所指的以后的记录向后移
//
try
{
IRecord->AddNew();
IRecord->Update();
IRecord->MoveLast();
//将新增加的记录的值记下来.
IFields = IRecord->GetFields();
nCount = IFields->GetCount(); //字段个数
for (Item = 0; Item < nCount; Item++)
{
newFieldMap[Item] = IRecord->GetCollect(_variant_t(Item));
}
IFields.Release();
//
IRecord->MovePrevious();
}
catch(_com_error &e)
{
ExceptionInfo(e);
return FALSE;
}
if(after==1)
pos--; //使pos再减一，变成在指针的当前位置上加入一条新记录，insert blank
pos1=pos;
while(pos>0)
{
try
{
for(Item=0;Item<nCount;Item++)
{
TempValue=IRecord->GetCollect(_variant_t(Item));
FieldMap[Item]=TempValue;
}
IRecord->MoveNext();
for(Item=0;Item<nCount;Item++)
{
IRecord->PutCollect(_variant_t(Item),FieldMap[Item]);
}
IRecord->Update();
IRecord->MovePrevious();
pos--;
if(pos>0)
IRecord->MovePrevious();
}
catch(_com_error &e)
{
ExceptionInfo(e);
return FALSE;
}
}
// 使最开始所指的记录内容为空
if(pos1==0 && after==1) {IRecord->MoveNext();}
else
{
try
{
TempValue.Clear();
for(Item=0;Item<nCount;Item++)
{
IRecord->PutCollect(_variant_t(Item),newFieldMap[Item]);
}
IRecord->Update();
}
catch(_com_error &e)
{
ExceptionInfo(e);
return FALSE;
}
}
return TRUE;
}
