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Conference azur::mcc

Title:	DECmcc user notes file. Does not replace IPMT.
Notice:	Use IPMT for problems. Newsletter location in note 6187
Moderator:	TAEC::BEROUD

Created:	Mon Aug 21 1989
Last Modified:	Wed Jun 04 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	6497
Total number of notes:	27359

2442.0. "QUESTION - MSL - Variable display (DEPENDS ON clause)" by MANENG::SHEA (Shea ... as in stadium) Thu Feb 27 1992 07:04

Is there any way to suppress display of a particular attribute by using MSL.

What I want to do is NOT display something depending on the value of another
thing.  I have tried the DEPENDS ON clause when defining an attribute, but this
does not help me (things still get displayed even if the DEPENDS ON clause
evaluates to FALSE).  This is a simplistic (and unworking) example, but shows
what I want to be able to do ... in this example, the value of Stat1 would be
printed by the PM regardless of what the value of Char1 is.

TYPE Thing = 99999 (Unknown = 0, Val1 = 1, Val2 = 2);

GLOBAL ENTITY FRED = 171 : IDENTIFIER = (IdX), SYMBOL = CLASS_FRED,
    IDENTIFIER ATTRIBUTES
	ATTRIBUTE IdX = 1 : FullName
            DNS_IDENT = PRIMARY_NAME,
            ACCESS = NONSETABLE,
            DISPLAY = TRUE,
            SYMBOL = ATTR_FRED_IDX,
            CATEGORIES = ( CONFIGURATION )
        END ATTRIBUTE IdX;
    END ATTRIBUTES; (* IDENTIFIER *)

    CHARACTERISTIC ATTRIBUTES
        ATTRIBUTE Char1 = 2 : Thing
            ACCESS = NONSETABLE,
            DISPLAY = TRUE,
            CATEGORIES = (CONFIGURATION),
            SYMBOL = ATTR_FRED_CHAR1
        END ATTRIBUTE Char1;
    END ATTRIBUTES; (* CHARACTERISTIC *)

    STATUS ATTRIBUTES
        ATTRIBUTE Stat1 = 3 : Unsigned32
            ACCESS = NONSETABLE,
            DISPLAY = TRUE,
            CATEGORIES = (CONFIGURATION),
            DEPENDS ON = "Char1 IN SET (Val1, Val2)"
            SYMBOL = ATTR_FRED_STAT1
        END ATTRIBUTE Stat1;

    END ATTRIBUTES; (* STATUS *)

    :
    :
    :

Any help greatly appreciated,

Pete Shea.

T.R Title User Personal
Name Date Lines

2442.1 try a variant record, or don't return it TOOK::CALLANDER MCC = My Constant Companion Tue Apr 07 1992 13:19 7

T.R	Title	User	Personal Name	Date	Lines
2442.1	try a variant record, or don't return it	TOOK::CALLANDER	MCC = My Constant Companion	`Tue Apr 07 1992 13:19`	7
	the depends on doesn't do it, to tell you the truth the only way to do what you ask is NOT to return the attribute unless you want it, or to combine the two attributes into a single attribute using a variant record. Please note though that there is currently no means of entering a variant record so the attribute could not be settable.

    the depends on doesn't do it, to tell you the truth the only way to do
    what you ask is NOT to return the attribute unless you want it, or to
    combine the two attributes into a single attribute using a variant
    record. Please note though that there is currently no means of entering
    a variant record so the attribute could not be settable.