Re: re-reading records in CL (not after EOF!)

Just one more thing:

According to the CL Reference manual:

If the file is opened by the OPNDBF command, this open operation is not
used by the Receive File (RCVF)



HTH
Dennis




                                                                                
                                                                 
                      Dennis Lovelady                                           
                                                                 
                                               To:      Midrange Systems 
Technical Discussion <midrange-l@xxxxxxxxxxxx>                          
                      06/20/2003 04:58         cc:                              
                                                                 
                      PM                       Subject: Re: re-reading records 
in CL (not after EOF!)(Document link: Dennis Lovelady)            
                                                                                
                                                                 
                                                                                
                                                                 



Ummm... not unless they've changed the rules.

First off, OVRDBF POSITION(*START) has always seemed like a silly value to
me.  Where else would one expect it to begin processing?

Secondly, you don't have to use explicit open in order to effectuate your
OVRDBF command.

Finally, as I said, reclaiming resources and issuing another read will
cause the program to read FROM THE BEGINNING OF THE FILE.  (If I didn't say
it, I meant it.....)

The following snippet will read the FIRST three records in a file
repeatedly until your power company finds out you haven't paid your bill:

    DCLF FILENAME

LOOP:
    RCVF
    RCVF
    RCVF
    RCLRSC LVL(*CALLER)
    GOTO LOOP

(I know - I just tried it.  Works at V5R1 anyway.)

Now, if your program reaches EOF, you're done, as Al pointed out earlier.


Dennis





                                                                                
                                                                     
                      Ken Sims                                                  
                                                                     
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Hi Dennis -

>Elimiate the OPNDBF command - you don't need it.  On first read, RCVF will
>implicitly open the file

The OPNDBF is required to be able to use POSDBF to reposition the file.

Ken
http://www.ke9nr.net/
Opinions expressed are my own and do not necessarily represent the views of
my employer or anyone in their right mind.

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