internal void GetDataSource(OleDbConnectionString constr, ref DataSourceWrapper datasrcWrapper) {
OleDbHResult hr;
UnsafeNativeMethods.IDataInitializeGetDataSource GetDataSource = DangerousIDataInitializeGetDataSource;
bool mustRelease = false;
RuntimeHelpers.PrepareConstrainedRegions();
try {
DangerousAddRef(ref mustRelease);
// this is the string that DataLinks / OLE DB Services will use to create the provider
string connectionString = constr.ActualConnectionString;
// base.handle is the 'this' pointer for making the COM call to GetDataSource
// the datasrcWrapper will store the IID_IDBInitialize pointer
// call IDataInitiailze::GetDataSource via the delegate
hr = GetDataSource(base.handle, IntPtr.Zero, ODB.CLSCTX_ALL, connectionString, ref ODB.IID_IDBInitialize, ref datasrcWrapper);
}
finally {
if (mustRelease) {
DangerousRelease();
}
}
if (hr < 0) { // ignore infomsg
if (OleDbHResult.REGDB_E_CLASSNOTREG == hr) {
throw ODB.ProviderUnavailable(constr.Provider, null);
}
Exception e = OleDbConnection.ProcessResults(hr, null, null);
Debug.Assert(null != e, "CreateProviderError");
throw e;
}
else if (datasrcWrapper.IsInvalid) {
SafeNativeMethods.Wrapper.ClearErrorInfo();
throw ODB.ProviderUnavailable(constr.Provider, null);
}
Debug.Assert(!datasrcWrapper.IsInvalid, "bad DataSource");
}
internal void GetDataSource(OleDbConnectionString constr, ref DataSourceWrapper datasrcWrapper)
{
OleDbHResult result;
UnsafeNativeMethods.IDataInitializeGetDataSource dangerousIDataInitializeGetDataSource = this.DangerousIDataInitializeGetDataSource;
bool success = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
base.DangerousAddRef(ref success);
string actualConnectionString = constr.ActualConnectionString;
result = dangerousIDataInitializeGetDataSource(base.handle, IntPtr.Zero, 0x17, actualConnectionString, ref ODB.IID_IDBInitialize, ref datasrcWrapper);
}
finally
{
if (success)
{
base.DangerousRelease();
}
}
if (result < OleDbHResult.S_OK)
{
if (OleDbHResult.REGDB_E_CLASSNOTREG == result)
{
throw ODB.ProviderUnavailable(constr.Provider, null);
}
throw OleDbConnection.ProcessResults(result, null, null);
}
if (datasrcWrapper.IsInvalid)
{
SafeNativeMethods.Wrapper.ClearErrorInfo();
throw ODB.ProviderUnavailable(constr.Provider, null);
}
}
internal void GetDataSource(OleDbConnectionString constr, ref DataSourceWrapper datasrcWrapper)
{
OleDbHResult result;
UnsafeNativeMethods.IDataInitializeGetDataSource dangerousIDataInitializeGetDataSource = this.DangerousIDataInitializeGetDataSource;
bool success = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
base.DangerousAddRef(ref success);
string actualConnectionString = constr.ActualConnectionString;
result = dangerousIDataInitializeGetDataSource(base.handle, IntPtr.Zero, 0x17, actualConnectionString, ref ODB.IID_IDBInitialize, ref datasrcWrapper);
}
finally
{
if (success)
{
base.DangerousRelease();
}
}
if (result < OleDbHResult.S_OK)
{
if (OleDbHResult.REGDB_E_CLASSNOTREG == result)
{
throw ODB.ProviderUnavailable(constr.Provider, null);
}
throw OleDbConnection.ProcessResults(result, null, null);
}
if (datasrcWrapper.IsInvalid)
{
SafeNativeMethods.Wrapper.ClearErrorInfo();
throw ODB.ProviderUnavailable(constr.Provider, null);
}
}
internal void GetDataSource(OleDbConnectionString constr, ref DataSourceWrapper datasrcWrapper)
{
OleDbHResult hr;
UnsafeNativeMethods.IDataInitializeGetDataSource GetDataSource = DangerousIDataInitializeGetDataSource !;
bool mustRelease = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
DangerousAddRef(ref mustRelease);
// this is the string that DataLinks / OLE DB Services will use to create the provider
string connectionString = constr.ActualConnectionString !;
// base.handle is the 'this' pointer for making the COM call to GetDataSource
// the datasrcWrapper will store the IID_IDBInitialize pointer
// call IDataInitiailze::GetDataSource via the delegate
hr = GetDataSource(base.handle, IntPtr.Zero, ODB.CLSCTX_ALL, connectionString, ref ODB.IID_IDBInitialize, ref datasrcWrapper);
}
finally
{
if (mustRelease)
{
DangerousRelease();
}
}
if (hr < 0)
{ // ignore infomsg
if (OleDbHResult.REGDB_E_CLASSNOTREG == hr)
{
throw ODB.ProviderUnavailable(constr.Provider, null);
}
Exception?e = OleDbConnection.ProcessResults(hr, null, null);
Debug.Assert(null != e, "CreateProviderError");
throw e;
}
else if (datasrcWrapper.IsInvalid)
{
SafeNativeMethods.Wrapper.ClearErrorInfo();
throw ODB.ProviderUnavailable(constr.Provider, null);
}
Debug.Assert(!datasrcWrapper.IsInvalid, "bad DataSource");
}
internal OleDbConnectionInternal(OleDbConnectionString constr, OleDbConnection connection)
{
this.ConnectionString = constr;
if (constr.PossiblePrompt && !Environment.UserInteractive)
{
throw ODB.PossiblePromptNotUserInteractive();
}
try
{
OleDbServicesWrapper objectPool = GetObjectPool();
this._datasrcwrp = new DataSourceWrapper();
objectPool.GetDataSource(constr, ref this._datasrcwrp);
if (connection != null)
{
this._sessionwrp = new SessionWrapper();
OleDbHResult hresult = this._datasrcwrp.InitializeAndCreateSession(constr, ref this._sessionwrp);
if ((OleDbHResult.S_OK > hresult) || this._sessionwrp.IsInvalid)
{
throw OleDbConnection.ProcessResults(hresult, null, null);
}
OleDbConnection.ProcessResults(hresult, connection, connection);
}
}
catch
{
if (this._sessionwrp != null)
{
this._sessionwrp.Dispose();
this._sessionwrp = null;
}
if (this._datasrcwrp != null)
{
this._datasrcwrp.Dispose();
this._datasrcwrp = null;
}
throw;
}
}
internal OleDbConnectionInternal(OleDbConnectionString constr, OleDbConnection connection) : base()
{
Debug.Assert((null != constr) && !constr.IsEmpty, "empty connectionstring");
ConnectionString = constr;
if (constr.PossiblePrompt && !System.Environment.UserInteractive)
{
throw ODB.PossiblePromptNotUserInteractive();
}
try
{
// this is the native DataLinks object which pools the native datasource/session
OleDbServicesWrapper wrapper = OleDbConnectionInternal.GetObjectPool();
_datasrcwrp = new DataSourceWrapper();
// DataLinks wrapper will call IDataInitialize::GetDataSource to create the DataSource
// uses constr.ActualConnectionString, no InfoMessageEvent checking
wrapper.GetDataSource(constr, ref _datasrcwrp);
Debug.Assert(!_datasrcwrp.IsInvalid, "bad DataSource");
// initialization is delayed because of OleDbConnectionStringBuilder only wants
// pre-Initialize IDBPropertyInfo & IDBProperties on the data source
if (null != connection)
{
_sessionwrp = new SessionWrapper();
// From the DataSource object, will call IDBInitialize.Initialize & IDBCreateSession.CreateSession
// We always need both called so we use a single call for a single DangerousAddRef/DangerousRelease pair.
OleDbHResult hr = _datasrcwrp.InitializeAndCreateSession(constr, ref _sessionwrp);
// process the HResult here instead of from the SafeHandle because the possibility
// of an InfoMessageEvent.
if ((0 <= hr) && !_sessionwrp.IsInvalid)
{ // process infonessage events
OleDbConnection.ProcessResults(hr, connection, connection);
}
else
{
Exception e = OleDbConnection.ProcessResults(hr, null, null);
Debug.Assert(null != e, "CreateSessionError");
throw e;
}
Debug.Assert(!_sessionwrp.IsInvalid, "bad Session");
}
}
catch
{
if (null != _sessionwrp)
{
_sessionwrp.Dispose();
_sessionwrp = null;
}
if (null != _datasrcwrp)
{
_datasrcwrp.Dispose();
_datasrcwrp = null;
}
throw;
}
}
internal OleDbConnectionInternal(OleDbConnectionString constr, OleDbConnection connection) : base () {
#if DEBUG
try { // use this to help validate this object is only created after the following permission has been previously demanded in the current codepath
if (null != connection) {
connection.UserConnectionOptions.DemandPermission();
}
else {
constr.DemandPermission();
}
}
catch(System.Security.SecurityException) {
System.Diagnostics.Debug.Assert(false, "unexpected SecurityException for current codepath");
throw;
}
#endif
Debug.Assert((null != constr) && !constr.IsEmpty, "empty connectionstring");
ConnectionString = constr;
if (constr.PossiblePrompt && !System.Environment.UserInteractive) {
throw ODB.PossiblePromptNotUserInteractive();
}
try {
// this is the native DataLinks object which pools the native datasource/session
OleDbServicesWrapper wrapper = OleDbConnectionInternal.GetObjectPool();
_datasrcwrp = new DataSourceWrapper();
// DataLinks wrapper will call IDataInitialize::GetDataSource to create the DataSource
// uses constr.ActualConnectionString, no InfoMessageEvent checking
wrapper.GetDataSource(constr, ref _datasrcwrp);
Debug.Assert(!_datasrcwrp.IsInvalid, "bad DataSource");
// initialization is delayed because of OleDbConnectionStringBuilder only wants
// pre-Initialize IDBPropertyInfo & IDBProperties on the data source
if (null != connection) {
_sessionwrp = new SessionWrapper();
// From the DataSource object, will call IDBInitialize.Initialize & IDBCreateSession.CreateSession
// We always need both called so we use a single call for a single DangerousAddRef/DangerousRelease pair.
OleDbHResult hr = _datasrcwrp.InitializeAndCreateSession(constr, ref _sessionwrp);
// process the HResult here instead of from the SafeHandle because the possibility
// of an InfoMessageEvent.
if ((0 <= hr) && !_sessionwrp.IsInvalid) { // process infonessage events
OleDbConnection.ProcessResults(hr, connection, connection);
}
else {
Exception e = OleDbConnection.ProcessResults(hr, null, null);
Debug.Assert(null != e, "CreateSessionError");
throw e;
}
Debug.Assert(!_sessionwrp.IsInvalid, "bad Session");
}
}
catch {
if (null != _sessionwrp) {
_sessionwrp.Dispose();
_sessionwrp = null;
}
if (null != _datasrcwrp) {
_datasrcwrp.Dispose();
_datasrcwrp = null;
}
throw;
}
}
