Re: File Pointers

[dkeck@xxxxxxx]

The ILE RPG Ref manual V4R4 says ...
"When the CHAIN operation is successful, the file specified in factor 2 is 
positioned such that a subsequent read operation retrieves the record logically 
following or preceding the retrieved record. When the CHAIN operation is not 
completed successfully (for example, an error occurs or no record is found), 
the file specified in factor 2 must be repositioned (for example, by a CHAIN or 
SETLL operation) before a subsequent read operation can be done on that file.If 
an update (on the calculation or output specifications) is done on the file 
specified in factor 2 immediately after a successful CHAIN operation to that 
file, the last record retrieved is updated." 
-DaveK

> Small problem, is this the answer?
> 
> Program A, writes a record to the order detail file using logical LL0001LA.
> Program A, then immediately calls program B, which is passed the order number 
to
recalculate the total order amount in the detail file to update the order 
header file. 
Program B uses a different logical, LL0001LB, over the order detail file.  
Program B, does
a CHAIN to the first record for the order, then a subsequent READE until end of 
order.
> 
> QUESTION???  Where is the pointer sitting when Program B does its first
>                            CHAIN to the order detail file LL0001LB?  Is it 
where the 
>                            last record was written or where?
> 
> Thanks for your help.
> 
> Lewis 
> 
> Lewis Libman
> llibman@behr.com
> 714 545 7101 x2118
>                                                                               
            
                                                                                
          
                                                                                
          
                                                                                
          
                                                                                
          
                                                                                
          
                                                                                
          
                                                                                
          
                                                                                
          
                          
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