/////////////////////////////////////////////////////////////////
// myDoInitialization
//
// This function sets initialization properties that tell the
// provider to prompt the user for any information required to
// initialize the provider, then calls the provider's
// initialization function.
//
/////////////////////////////////////////////////////////////////
HRESULT myDoInitialization
(
IUnknown * pIUnknown
)
{
HRESULT hr;
IDBInitialize * pIDBInitialize = NULL;
IDBProperties * pIDBProperties = NULL;
HWND hWnd = GetDesktopWindow();
const ULONG cProperties = 2;
DBPROP rgProperties[cProperties];
DBPROPSET rgPropSets[1];
// In order to initialize the DataSource object most providers require
// some initialization properties to be set by the consumer. For instance,
// these might include the data source to connect to and the user ID and
// password to use to establish identity. We will ask the provider to
// prompt the user for this required information by setting the following
// properties:
myAddProperty(&rgProperties[0],DBPROP_INIT_PROMPT,VT_I2,DBPROMPT_COMPLETE);
#ifdef _WIN64
myAddProperty(&rgProperties[1],DBPROP_INIT_HWND, VT_I8, (LONG_PTR)hWnd);
#else
myAddProperty(&rgProperties[1],DBPROP_INIT_HWND, VT_I4, (LONG_PTR)hWnd);
#endif
rgPropSets[0].rgProperties = rgProperties;
rgPropSets[0].cProperties = cProperties;
rgPropSets[0].guidPropertySet = DBPROPSET_DBINIT;
// Obtain the needed interfaces
XCHECK_HR(hr = pIUnknown->QueryInterface(IID_IDBProperties,
(void**)&pIDBProperties));
XCHECK_HR(hr = pIUnknown->QueryInterface(IID_IDBInitialize,
(void**)&pIDBInitialize));
// If a provider requires initialization properties, it must support the
// properties that we are setting (_PROMPT and _HWND). However, some
// providers do not need initialization properties and may therefore
// not support the _PROMPT and _HWND properties. Because of this, we will
// not check the return value from SetProperties
hr = pIDBProperties->SetProperties(1, rgPropSets);
// Now that we've set our properties, initialize the provider
XCHECK_HR(hr = pIDBInitialize->Initialize());
CLEANUP:
if( pIDBProperties )
pIDBProperties->Release();
if( pIDBInitialize )
pIDBInitialize->Release();
return hr;
}
HRESULT GetSampprovDataSource
(
IDBInitialize** ppIDBInitialize_out
)
{
IDBInitialize* pIDBInit = NULL;
IDBProperties* pIDBProperties = NULL;
DBPROPSET dbPropSet[1];
DBPROP dbProp[1];
HRESULT hr;
DumpStatusMsg( "Connecting to the SampProv sample data provider...\n" );
assert(ppIDBInitialize_out != NULL);
VariantInit(&(dbProp[0].vValue));
// Create an instance of the SampProv sample data provider
hr = CoCreateInstance( CLSID_SampProv, NULL, CLSCTX_INPROC_SERVER,
IID_IDBInitialize, (void **)&pIDBInit );
if (FAILED(hr))
{
DUMP_ERROR_LINENUMBER();
DumpErrorHResult( hr, "CoCreateInstance" );
goto error;
}
// Initialize this provider with the path to the customer.csv file
dbPropSet[0].rgProperties = &dbProp[0];
dbPropSet[0].cProperties = 1;
dbPropSet[0].guidPropertySet = DBPROPSET_DBINIT;
dbProp[0].dwPropertyID = DBPROP_INIT_DATASOURCE;
dbProp[0].dwOptions = DBPROPOPTIONS_REQUIRED;
dbProp[0].colid = DB_NULLID;
V_VT(&(dbProp[0].vValue)) = VT_BSTR;
V_BSTR(&(dbProp[0].vValue)) = SysAllocString( L"." );
if ( NULL == V_BSTR(&(dbProp[0].vValue)) )
{
DUMP_ERROR_LINENUMBER();
DumpErrorMsg( "SysAllocString failed\n" );
goto error;
}
hr = pIDBInit->QueryInterface( IID_IDBProperties, (void**)&pIDBProperties);
if (FAILED(hr))
{
DUMP_ERROR_LINENUMBER();
DumpErrorHResult( hr, "IDBInitialize::QI for IDBProperties");
goto error;
}
hr = pIDBProperties->SetProperties( 1, &dbPropSet[0]);
if (FAILED(hr))
{
DUMP_ERROR_LINENUMBER();
DumpErrorHResult( hr, "IDBProperties::SetProperties" );
goto error;
}
hr = pIDBInit->Initialize();
if (FAILED(hr))
{
DUMP_ERROR_LINENUMBER();
DumpErrorHResult( hr, "IDBInitialize::Initialize" );
goto error;
}
*ppIDBInitialize_out = pIDBInit;
hr = ResultFromScode( S_OK );
error:
VariantClear( &(dbProp[0].vValue) );
if( pIDBProperties )
pIDBProperties->Release();
if( FAILED(hr) )
{
if (pIDBInit)
pIDBInit->Release();
*ppIDBInitialize_out = NULL;
}
return hr;
}
/////////////////////////////////////////////////////////////////
// myGetProperty
//
// This function gets the BOOL value for the specified property
// and returns the result in *pbValue.
//
/////////////////////////////////////////////////////////////////
HRESULT myGetProperty
(
IUnknown * pIUnknown,
REFIID riid,
DBPROPID dwPropertyID,
REFGUID guidPropertySet,
BOOL * pbValue
)
{
HRESULT hr;
DBPROPID rgPropertyIDs[1];
DBPROPIDSET rgPropertyIDSets[1];
ULONG cPropSets = 0;
DBPROPSET * rgPropSets = NULL;
IDBProperties * pIDBProperties = NULL;
ISessionProperties * pISesProps = NULL;
ICommandProperties * pICmdProps = NULL;
IRowsetInfo * pIRowsetInfo = NULL;
// Initialize the output value
*pbValue = FALSE;
// Set up the property ID array
rgPropertyIDs[0] = dwPropertyID;
// Set up the Property ID Set
rgPropertyIDSets[0].rgPropertyIDs = rgPropertyIDs;
rgPropertyIDSets[0].cPropertyIDs = 1;
rgPropertyIDSets[0].guidPropertySet = guidPropertySet;
// Get the property value for this property from the provider, but
// don't try to display extended error information, since this may
// not be a supported property: a failure is, in fact, expected if
// the property is not supported
if( riid == IID_IDBProperties )
{
XCHECK_HR(hr = pIUnknown->QueryInterface(IID_IDBProperties,
(void**)&pIDBProperties));
CHECK_HR(hr = pIDBProperties->GetProperties(
1, //cPropertyIDSets
rgPropertyIDSets, //rgPropertyIDSets
&cPropSets, //pcPropSets
&rgPropSets //prgPropSets
));
}
else if( riid == IID_ISessionProperties )
{
XCHECK_HR(hr = pIUnknown->QueryInterface(IID_ISessionProperties,
(void**)&pISesProps));
CHECK_HR(hr = pISesProps->GetProperties(
1, //cPropertyIDSets
rgPropertyIDSets, //rgPropertyIDSets
&cPropSets, //pcPropSets
&rgPropSets //prgPropSets
));
}
else if( riid == IID_ICommandProperties )
{
XCHECK_HR(hr = pIUnknown->QueryInterface(IID_ICommandProperties,
(void**)&pICmdProps));
CHECK_HR(hr = pICmdProps->GetProperties(
1, //cPropertyIDSets
rgPropertyIDSets, //rgPropertyIDSets
&cPropSets, //pcPropSets
&rgPropSets //prgPropSets
));
}
else
{
XCHECK_HR(hr = pIUnknown->QueryInterface(IID_IRowsetInfo,
(void**)&pIRowsetInfo));
CHECK_HR(hr = pIRowsetInfo->GetProperties(
1, //cPropertyIDSets
rgPropertyIDSets, //rgPropertyIDSets
&cPropSets, //pcPropSets
&rgPropSets //prgPropSets
));
}
// Return the value for this property to the caller if
// it's a VT_BOOL type value, as expected
if( V_VT(&rgPropSets[0].rgProperties[0].vValue) == VT_BOOL )
*pbValue = V_BOOL(&rgPropSets[0].rgProperties[0].vValue);
CLEANUP:
if( rgPropSets )
{
CoTaskMemFree(rgPropSets[0].rgProperties);
CoTaskMemFree(rgPropSets);
}
if( pIDBProperties )
pIDBProperties->Release();
if( pISesProps )
pISesProps->Release();
if( pICmdProps )
pICmdProps->Release();
if( pIRowsetInfo )
pIRowsetInfo->Release();
return hr;
}
/*****************************************************************************
* データベースに接続します。
*****************************************************************************/
int DbSqlCeClient::open()
{
HRESULT hr;
ULONG count = 0;
ULONG i, j;
IDBProperties *pProp = NULL;
// CompactのConnectionStringの指定可能なオプション数は、3が最大なので固定で確保します。
DBPROPSET arInitPropSet[PROPSET_MAX] = {0};
DBPROP arProp1[4]= {0}, arProp2[10] = {0};
//
try{
// インタフェースの生成
hr = CoCreateInstance( m_sqlceVerGUID, NULL, CLSCTX_INPROC_SERVER,
IID_IDBInitialize, (LPVOID*)&m_pDBinit);
if( FAILED( hr ) ) throw(1);
// プロパティの取得
hr = m_pDBinit->QueryInterface(IID_IDBProperties, (void **)&pProp);
if( FAILED( hr ) ) throw(2);
// 最大数とDBPROPの配列を設定。
arInitPropSet[0].cProperties = ARRAYSIZE(arProp1);
arInitPropSet[0].rgProperties = arProp1;
arInitPropSet[0].guidPropertySet = DBPROPSET_DBINIT;
for( i = 0; i < ARRAYSIZE(arProp1); i ++ ){
VariantInit( &(arProp1[i].vValue) );
}
arInitPropSet[1].cProperties = ARRAYSIZE(arProp2);
arInitPropSet[1].rgProperties = arProp2;
arInitPropSet[1].guidPropertySet = DBPROPSET_SSCE_DBINIT;
for( i = 0; i < ARRAYSIZE(arProp2); i ++ ){
VariantInit( &(arProp2[i].vValue) );
}
// プロパティの作成
count = create_open_prop( arInitPropSet, ARRAYSIZE(arInitPropSet) );
if( 0 == count ){
throw(3);
}
else{
hr = pProp->SetProperties( count, arInitPropSet );
// プロパティのメモリ開放
for( i = 0; i < count; i ++ ){
for( j = 0; j < arInitPropSet[i].cProperties; j ++ ){
if( VT_BSTR == arInitPropSet[i].rgProperties[j].vValue.vt ){
SysFreeString( arInitPropSet[i].rgProperties[j].vValue.bstrVal );
}
}
}
pProp->Release();
if( FAILED( hr ) ) throw(4);
}
// データベースに接続します。
hr = m_pDBinit->Initialize();
if( FAILED( hr ) ){
throw(5);
}
m_IsOpened = true;
// 次に必要なインタフェースを取得します。
hr = m_pDBinit->QueryInterface( IID_IDBCreateSession, (void**)&m_pSession);
if( FAILED( hr ) ) throw(6);
//
hr = m_pSession->CreateSession( NULL, IID_IDBCreateCommand,(IUnknown**) &m_pCrtCmd);
if( FAILED( hr ) ) throw(7);
//
hr = m_pCrtCmd->CreateCommand( NULL, IID_ICommandText,(IUnknown**) &m_pCmdtext );
if( FAILED( hr ) ) throw(8);
}
catch(const int err){
if( m_IsOpened ){
m_pDBinit->Uninitialize();
m_IsOpened = false;
}
if( m_pCmdtext ){
m_pCmdtext->Release();
m_pCmdtext =NULL;
}
if( m_pCrtCmd ){
m_pCrtCmd->Release();
m_pCrtCmd = NULL;
}
if( m_pSession ){
m_pSession->Release();
m_pSession = NULL;
}
if( pProp ){
pProp->Release();
pProp = NULL;
}
if( m_pDBinit ){
m_pDBinit->Release();
m_pDBinit = NULL;
}
return err;
}
return 0;
}
