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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_file_close() functionThe mi_file_close() function closes an operating-system file.

The mi_file_close() function

The mi_file_close() function closes an operating-system file.

Syntax

void mi_file_close(fd)
   mi_integer fd;

fd: The file descriptor of the file to close.


Valid in client LIBMI application?	Valid in user-defined routine?
Yes	Yes

Usage

The mi_file_close() function closes the operating-system file that the fd file descriptor references. This file descriptor must have been obtained from a previous call to the mi_file_open() function. The mi_file_close() function is a destructor function for an operating-system file descriptor. It frees the fd file descriptor references. Unless you explicitly close a file with mi_file_close(), files remain open for the duration of the client session.

Server only: In a C UDR, this function can close files on either the server or client computer. You specify the location of the file when you open it with the mi_file_open() function.

Return values

None.