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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.
AppendixesThis section contains additional reference information.
Source files generated for DataBlade® modulesYou can use the tables in this section to find a brief description of the types of files BladeSmith generates for your DataBlade® project.
ActiveX/C++ source code files
Common filesFor each project, BladeSmith generates support library files and object files that are used to compile both the client project and the server project.
Object files

Object files

For each opaque type/ActiveX value object named Opaque, BladeSmith generates the following files, which are used by both the client project and the server project. Do not modify the OpaqueStruct.h file.

Table 1. Object files
File name	Description
OpaqueCommon.cpp	C++ file that contains the logic for all ActiveX custom methods and their server-project equivalents. This file can be modified.
OpaqueCommon.h	Header file that contains the OpaqueCommon class definition. This file can be modified.
OpaqueStruct.h	C header file that contains the OpaqueStruct definition (the C structure representing the opaque type)