Pathway/iTS SCREEN COBOL Reference Manual (H06.10+, J06.03+)

SCREEN COBOL Source Program
HP NonStop Pathway/iTS SCREEN COBOL Reference Manual—426750-003
2-26
Qualification
Qualification syntax is:
The qualification rules are as follows:
•
Each qualifier must be at a higher level than the previous one and must stay within
the same structure of the name it qualifies.
•
The same name cannot appear at different levels in a structure; otherwise, the
name could qualify itself.
•
If a data name or a condition-name is assigned to more than one data item, the
data name or condition-name must be qualified each time it is referenced (except
in the REDEFINES clause where, by context, qualification is unnecessary).
•
A paragraph name cannot be duplicated within a section. Within its own section a
paragraph name does not require qualification. When a section name is used to
qualify a paragraph name, the word SECTION is not part of the name.
•
A data name used as a qualifier is not subscripted, even if the data name is
described with an OCCURS clause.
•
A name can be qualified even when the name is unique.
•
If more than one combination of qualifiers is available to make a name unique, any
combination can be used.
In the following example, all data names except prefix are unique. Qualification
must be used to reference either prefix item.
01 transaction-data ... 01 master-data ...
03 item-no ... 03 code-no ...
05 prefix ... 05 prefix ...
05 code ... 05 suffix ...
03 quantity ... 03 description ...
Using the same example, any of the following sentences could be used to move the
contents of one prefix to the other prefix :
MOVE prefix OF item-no TO prefix OF code-no.
MOVE prefix OF item-no TO prefix OF master-data.
MOVE prefix OF transaction-data TO prefix IN code-no.
MOVE prefix IN transaction-data TO prefix IN master-data.
{ data-name } [ { OF } qualification-name ] ...
{ condition-name } [ { IN } ]
paragraph-name [ { OF } section-name ]
[ { IN } ]
copy-text [ { OF } library-name ]
[ { IN } ]