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Extending Informix®Beyond standard relational database objects, HCL Informix® can be extended to handle specialized data types, access methods, routines, and other objects. Informix® includes many built-in extensions that are fully integrated in the database server. Informix® 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 Informix®.
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 Informix® 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 Informix® databases.
DataBlade® Developers Kit User's GuideThe HCL Informix® DataBlade® Developers Kit User's Guide describes how to use 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.

Tracing and error handling

BladeSmith 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.

A generated utility function, Gen_Trace(), processes all tracing and error handling. Your routines must not call Gen_Trace() directly. To perform tracing and error handling tasks, use the DBDK_TRACE macros defined in the generated header file.

This section describes:

How to use the supplied DBDK_TRACE macros to add tracing and error handling to your generated code (see Add tracing and error handling)
How to enable tracing and use the generated TraceSet_project() procedure (see Enabling tracing in a DataBlade module and Enabling tracing in a database session)
The standard error messages supplied by HCL Informix® (see Standard error messages)

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