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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.
Programming DataBlade® module routines in CThis section contains information to help you edit and compile C language source code generated by DataBlade®.
Source files generated by BladeSmithWhen you create objects, BladeSmith generates the source files; some file names are prefixed with the name of the DataBlade® module (indicated by project). By default, BladeSmith creates the source files in the src and src\c subdirectories of the directory that contains the BladeSmith project file.
C source code files

C source code files

The support.c source code file for the DataBlade® module project contains:

The #include directives for standard C and DataBlade API header files.
Utility functions called from BladeSmith-generated routines.

The udr.c source code file for the DataBlade module project contains function declarations for user-defined C routines, cast support routines, and aggregates in the BladeSmith project.

Each opaque data type has a source code file, Opaque.c, where Opaque is the name of the opaque data type. The Opaque.c source code files contain function definitions for opaque type support routines specified in the DataBlade module project.

The statistics.c source code file for the DataBlade module project contains user-defined statistics support routines for each opaque data type with statistics support.