Caché MultiValue Basic Reference
Executes a MultiValue command from a program and returns.
||One or more MultiValue commands, each command specified as a quoted string. A string can be quoted using single quotes ('cmd arg'), double quotes ("cmd arg"), or backslashes (\cmd arg\). To specify multiple commands, separate the commands with a Field Mark ("cmd1 arg":@FM:"cmd2 arg").
command executes the specified Caché MultiValue command(s), then resumes execution of the MVBasic program. It initially searches the VOC for the command
; if the command
is not found in the VOC, it searches the global catalog. For lookup details, refer to CATALOG
in the Caché MultiValue Commands Reference
EXECUTE, PERFORM, and CHAIN
command executes one or more MultiValue commands from within MVBasic, then returns execution to the next MVBasic statement in the invoking program. EXECUTE
can pass values to the MultiValue command(s) and return values from the MultiValue command(s).
command executes one or more MultiValue commands from within MVBasic, then returns execution to the next MVBasic statement in the invoking program. PERFORM
cannot pass or return values.
command executes a single MultiValue command from within MVBasic. It does not return execution to the invoking program. CHAIN
cannot pass values.
In Reality and D3 emulations, the PERFORM
command is functionally identical to the EXECUTE
In UniData and UDPICK emulations, a command
name with an initial character of * is handled as a global name. PERFORM
removes the leading * and then looks up the resulting command name in the global catalog in SYS.MV, rather than looking up in the VOC. If the runtime environment is not a UniData emulation, a normal VOC lookup is done on the *command
The following example shows how to use PERFORM
to execute multiple MultiValue commands:
PERFORM "SLEEP 2":@FM:"SLEEP 3"