LINC Programming Reference Manual - Public Support Login - Unisys

LOOK.UP; (LU)
LOOK.UP; (LU)
Syntax
Examples
References
The single LOOK.UP; command variant is used to read a single Standard or Table
Component record whose Ordinate value matches that contained in a data item. This data
item must have compatible edit characteristics with the Ordinate.
The single LOOK.UP command variant does one single read, and does not have an
associated END; command, END.NO.PRINT command, or END.EXIT; command.
In Ispec logic, if a LOOK.UP; command fails to find a record and the GLB.STATUS
command is not included, an automatic error message is returned to the operator and no
further logic is processed. The System Data item GLB.STATUS is not affected by the single
LOOK.UP; command variant in Ispec logic. However, if you include the GLB.STATUS;
command with the LOOK.UP; command, the data item is set to ***** and processing
continues.
In Report logic, GLB.STATUS is set to ***** if a record is not found, and execution
continues.
DD DD DD DDDDDDDDDDDDD
DDDDDDBDDDDDDDDDDDBDDDDDDDDBDDDDDDDDDDDDBDDDDDDDDDDDDD4
3 3 3 3
@D DY CD D4
3 3
@D DY
A product can have two suppliers. The Component PROD has the following data items:
The Component SUPP has an Ordinate SUPPLIER. While an entry in PROD of a value for
SUPPLIER will automatically be validated, SUPPLIER2 must be explicitly validated by
logic, as follows:
If no such supplier is found, a system error message is automatically sent to the operator.
‘‘SECURE’’.
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