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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®.
Generated code
Tracing and error handlingBladeSmith adds tracing and error handling code throughout the generated source code if the tracing option is set to True when you generate source code in BladeSmith.
Enabling tracing in a DataBlade® moduleAfter you generate code with tracing and compile your code, enable tracing in your DataBlade® module.
Create a trace classTracing classes are categories of tracing that can be activated independently, allowing you to tune your tracing output to suspected problem areas.

Create a trace class

Tracing classes are categories of tracing that can be activated independently, allowing you to tune your tracing output to suspected problem areas.

To enable tracing in a database, you must insert the DataBlade® trace class as a record in the systraceclasses system catalog.

The tracing generated by BladeSmith provides a single trace class, with the same name as your DataBlade project.

This example creates a trace class for the Business DataBlade module:

insert into informix.systraceclasses(name)
   values('Business');

You can create your own tracing classes for customized tracing. See the HCL OneDB™ DataBlade API Programmer's Guide for more information.