COBOL Manual for TNS/E Programs (H06.03+)

Process Initiation, Communication, and
Management
HP COBOL Manual for TNS/E Programs—520347-003
31-5
$RECEIVE
$RECEIVE as Separate Input and Output Files
The most common way to use $RECEIVE is to open it in INPUT mode for one file, and
in OUTPUT or EXTEND mode for one or more other files.
All files are assigned to $RECEIVE; however, when testing your system, you can
assign all files to disk files and then reassign them to $RECEIVE when testing is
completed.
Figure 31-2. $RECEIVE as Separate Input and Output Files
Example 31-1. Requester Code (page 1 of 2)
...
SELECT TRANSACTIONS ASSIGN TO "$BAL"
ORGANIZATION IS SEQUENTIAL
ACCESS MODE IS SEQUENTIAL.
...
FD TRANSACTIONS
LABEL RECORDS ARE OMITTED
* Variable-length records
RECORD CONTAINS 1 TO 8 CHARACTERS.
01 BALANCE PICTURE 9(8).
01 ERROR-ON-TASK.
05 ERROR-CODE PICTURE 9.
05 ERR-MSG PICTURE X(7).
WORKING-STORAGE SECTION.
01 TRAN-REQUEST.
05 TRAN-CODE PICTURE 9.
05 TRAN-ACCOUNT-NUMBER PICTURE 9(6).
...
Requester Server
Reply Message through RESPONSE-OUT
Task Message through TASKS-IN
Reply Message through ERROR-MSG
VST710.vsd