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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.
Create DataBlade® objects by using BladeSmithUse BladeSmith to create DataBlade® modules.
Create DataBlade® module objectsBladeSmith uses wizards to create and edit objects.
Define errorsDataBlade® module routines can print error messages and trace messages. Error messages are printed with the mi_db_error_raise() function. Trace messages are written to a trace file with the DBDK_TRACE macros or the gl_dprintf() macro.
SQL error textThe SQL error text is displayed with the error code in the language specified by the message locale. To specify parameters in messages, assign each parameter a unique name enclosed in percent characters (%).

SQL error text

The SQL error text is displayed with the error code in the language specified by the message locale. To specify parameters in messages, assign each parameter a unique name enclosed in percent characters (%).

For example, an input function could send the following message when it is unable to translate an input value:

%FUNCNAME%: Unable to decipher input '%INPUT%'.

For information about tracing and calling error messages, see the Informix® DataBlade® API Programmer's Guide.

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