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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® API Function ReferenceThe HCL OneDB™ DataBlade® API Function Reference describes the DataBlade® API functions and the subset of functions that the DataBlade® API supports.
Function descriptionsThis section gives comprehensive reference information about the functions that are valid within DataBlade® API modules. It lists the function descriptions in alphabetical order, with syntax, usage information, and return values for the functions.
The mi_class_name() functionThe mi_class_name() function obtains the name of a virtual-processor (VP) class.

The mi_class_name() function

The mi_class_name() function obtains the name of a virtual-processor (VP) class.

Syntax

char *mi_class_name(VPclass_id)
   mi_integer VPclass_id;

VPclass_id

A VP-class identifier for the VP class whose name the function is to return. This argument can be either of the following values:

A valid VP-class identifier: Obtains the name of the specified VP class.
MI_CURRENT_CLASS VP-class constant: Obtains the name of the VP class of the current VP.


Valid in client LIBMI application?	Valid in user-defined routine?
No	Yes

Important: This advanced function can adversely affect your UDR if you use the function incorrectly. Use it only when no regular DataBlade® API function can perform the task you need done.

Usage

The mi_class_name() function obtains the name of the VP class that VPclass_id specifies. The VP-class name is assigned to the VP class in the VPCLASS configuration parameter. For example, suppose you have the following VPCLASS configuration parameter:

VPCLASS=newvp, num=3, max=6

The mi_class_name() function returns the string 'newvp' when it receives the VP-class identifier for the newvp VP class. You can obtain a VP-class identifier with the mi_vpinfo_classid() or mi_class_id() function.

For information about how to obtain information about VPs and VP classes, see the HCL OneDB™ DataBlade API Programmer's Guide.

Return values

A char pointer: A pointer to the name of the VP class associated with the specified VP-class identifier.
NULL: The function was not successful.