RE: Sorting an arrray data structure into a subfile

David,

Here is an example I had...most likely from Mr. Klement.
F599200L_t is a template of the record layout. RecCount is the number of
records loaded. Maximum records in this example is the 150. By sorting
the individual array, the whole DS is sorted with it.


D RecsDS DS

D Recs like(F599200L_t) Dim(150)

D SrtDoco Overlay(Recs)
Like(F599200L_t.Doco)
D SrtWaDl01 Overlay(Recs:*Next)

D Like(F599200L_t.WaDl01)

D SrtSEQ Overlay(Recs:*Next)

D Like(F599200L_t.SEQ )

D Srt$TOC Overlay(Recs:*Next)

D Like(F599200L_t.$TOC)

D SrtDl01 Overlay(Recs:*Next)

D Like(F599200L_t.Dl01)

D Srt$TOT Overlay(Recs:*Next)

D Like(F599200L_t.$TOT)

D SrtSRCM Overlay(Recs:*Next)

D Like(F599200L_t.SRCM)


If RecCount > 0 ;

Select ;
When SortColumn = 'SFSEQ ' ;
SortA %SubArr(SrtSEQ: 1: RecCount);
When SortColumn = 'SF$TOC' ;
SortA %SubArr(Srt$TOC: 1: RecCount);
When SortColumn = 'SFDL01' ;
SortA %SubArr(SrtDl01: 1: RecCount);
When SortColumn = 'SFSRCM' ;
SortA %SubArr(SrtSRCM: 1: RecCount);
Endsl ;

Endif ;


Good Luck...
- Steve


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of David FOXWELL
Sent: Friday, November 27, 2009 10:43 AM
To: RPG programming on the IBM i / System i
Subject: Sorting an arrray data structure into a subfile

Hi,

Having a hard time with this :

A subfile has to be modified so that it will display the results in the
reverse order.

I can't read the data differently before charging the SF so I'm putting
it into an array with the idea of sorting it and then copying to the
subfile.

Some simplified code :

D wDS DS QUALIFIED
D InfoSF LIKEREC ( subfileRecord : *OUTPUT
)
D DIM ( 50 ) DESCEND

D Index 3I 0 OVERLAY ( InfoSF : *NEXT )
D INZ ( *LOVAL )


The idea is load the arrays instead of the subfile with an index value
starting at 1.

Then a SORTA on wDS.Index will also sort wDS.InfoSF. Then I can read
through the arrays until I get a *LOVAL in the Index, writing wDS.InfoSF
to my subfile.

This will not work as the index seems to be sharing the space occupied
by the InfoSF.

When I debug I can see that the index is being updated by the subfile
info when the arrays are loaded :
SFRecNo +=1;
wDS.Index ( SFRecNo ) = SFRecNo;
wDS.InfoSF ( SFRecNo ).Field1;
wDS.InfoSF ( SFRecNo ).Field2;



What am I doing wrong?