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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.
Create ActiveX value objectsThis section describes how to use the OneDB® DataBlade® Developers Kit (DBDK) to create ActiveX value objects. This section describes the use of C++ to implement opaque type support routines.
Implement ActiveX value objectsTo implement the client and server projects of an ActiveX value object, you add project-specific logic to particular C++ source files generated by BladeSmith.
Access properties by using Visual BasicThis section describes how you can get and set ActiveX properties if you are using Visual Basic as your development environment.

Access properties by using Visual Basic

This section describes how you can get and set ActiveX properties if you are using Visual Basic as your development environment.

For an ActiveX value object based on the opaque type named Opaque, with a non-array data structure member named x, you can get the corresponding property as follows:

member_value = Opaque.x

You can set the property as follows:

Opaque.x = member_value

If a data structure member is an array, you can get the property as follows:

count = Opaque.xDim

You can set or put the property as follows:

member_value = Opaque.x(i)