The AddTransform method adds a new Transform with extended multiphase capability to the data pump.
HRESULT AddTransform2(
LPCOLESTR pwzName,
LPBYTE pvUserData,
LPCDTSTransformColumnsSpecification pColumns,
DTSGuid ServerClsid,
VARIANT ServerParameters,
DTSTransformFlags dwFlags,
DTSTransformPhaseEnum ePhases,
IStorage *pIStorage );
| Argument | Description |
|---|---|
| pwzName [in] | Transformation name |
| pvUserData [in] | Data that is passed to the event sink if an event occurs during a transformation |
| pColumns [in] | Structure specifying source and destination columns |
| ServerClsid [in] | ProgID or CLSID of transformation, which can be Iunknown |
| ServerParameters [in] | Server parameters for the current transformation |
| dwFlags [in] | Transformation column-validation flags |
| ePhases [in] | Phases for which the transformation will be called |
| pIStorage [in] | Pointer to persistent storage of transformation properties |
The data pump calls CoCreateInstance on the transformation object specified by ServerClsid. The transformation specified must support the IDTSDataPumpTransform2 interface and, by inheritance, IDTSDataPumpTransform. It must respond to QueryInterface for both IDTSDataPumpTransform2 and IDTSDataPumpTransform.