Set_MFS subroutine [Revelation On-Line Wiki]

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====== Set_MFS subroutine    ======

 
==== Description ====
 
Programmatically attach Modifying Filing Systems (MFS) to specified tables.
 
==== Syntax ====
 
**Set_MFS**(//tablename//, //mfslist//, //action//)
 
==== Parameters ====
 
The Set_MFS subroutine has the following parameters.

^Parameter^Description^
|//tablename//|Table to which to attach the MFS.|
|//mfslist//|One or more (in a list) MFS to add to or remove from the table.|
|//action//|Action to take, regarding the MFS list:\\ \\ 1 - Add the MFS list to the end of the chain (just before the Base Filing System (BFS).\\ 2 - Add the MFS list to the beginning of the chain.\\ 3 - Add the MFS list to as close as possible to the front of the chain (just after such system MFSs as PROTECT.MFS and SI.MFS).\\ 4 - Replace the MFSs currently attached to the table, with the list passed in //mfslist//.\\ 5 - Remove list passed in //mfslist//, from the table.\\ 6 - Remove all MFSs from the table.|


==== See Also ====

[[define_database|Define_Database]], [[chapter_mfs|Chapter 8: Modifying Filing Systems]], [[installing_an_mfs|Installing an MFS]]


==== Example ====

<code>
/* Adds RIGHTDEX.MFS to the CAR_ORDERS table, placing it just after system MFSs, in precedence. */

Set_MFS("CAR_ORDERS", "RIGHTDEX.MFS",3)

If Get_Status(ErrCodes) Then
  GoSub ErrorHandling
End
</code>