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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for HCL OneDB™.
Creating extensionsYou can create user-defined data types, routines, access methods, and other database objects to suit your needs. You can use application programming interfaces to write user-defined routines and applications that access data in HCL OneDB™ databases.
DataBlade® Developers KitThe DataBlade® Developers Kit (DBDK) guides contain information about the tools you can use to develop and package DataBlade® modules, which extend the functionality of HCL OneDB™ databases.
DataBlade® Developers Kit User's GuideThe HCL OneDB™ DataBlade® Developers Kit Users Guide describes how to use OneDB® DataBlade® Developers Kit (DBDK) tools to develop and package DataBlade® modules.
The ActiveX value objectsThis section provides information for client application developers who are using ActiveX value objects.
The IRawObjectAccess custom interfaceThe IRawObjectAccess custom interface is provided for users of the API and the Microsoft™ ODBC API. IRawObjectAccess enables you to instantiate an ActiveX value object with raw data or to extract raw data from an existing value object.
Instantiating the ActiveX value object

Instantiating the ActiveX value object

About this task

To instantiate the ActiveX value object and access its custom methods:

Procedure

Call CoCreateInstance() with a CLSID of CLSID_OPAQUE and an IID of IID_RawObjectAccess to create an empty ActiveX value object.
Pass the raw object data to the SetDataC() method to fill the ActiveX value object.
Use QueryInterface() to get the IID for the IDispatch interface (IID_IDispatch).
Use IDispatch::Invoke() to access the custom methods of the ActiveX value object.