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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.
DBDK InfoShelfThe DataBlade® Developers Kit InfoShelf is designed to help you work with BladeSmith.
DataBlade® Developers Kit TutorialThe Tutorial is a set of exercises that demonstrate how to create extensions to HCL Informix® and package them as DataBlade® modules by using DBDK. Support for DataBlade Developers Kit (DBDK) is removed starting Informix Server 14.10.xC6.
Tutorial exercise 1: Creating a simple user-defined routineThis exercise demonstrates how to use the tools of the -- BladeSmith and the DBDK Visual C++ Add-In--to create a DataBlade® module with a user-defined routine and to debug it.
Using BladeSmith to create the AddIntegers() function

Using BladeSmith to create the AddIntegers() function

About this task

To create the AddIntegers() function:

Procedure

Choose Edit > Insert > Routine and type the following information in the New Routine wizard.


Routine property	AddIntegers value
Routine Name (SQL)	AddIntegers
Language	C
Return type	integer
Statement Local Variables	No
Arguments	Name: Int1 Type: integer Default: leave blank Name: Int2 Type: integer Default: leave blank
Routine Calling Options	Only the Routine does not accept NULL arguments check box must be checked; clear the Routine may return inconsistent check box.
Routine Name (C)	AddInts
Shared object path	Leave as default
Behavior of Routines	Routine is well-behaved
Special Stack Requirements	Leave blank
Cost of a Routine	0
Related Routines	None
Object grant privileges	Grant execute privileges

Click Finish.
The AddIntegers() function appears in the User Defined Objects folder.
Choose Project > Save to save the changes to your DataBlade® module.

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