AW: writing to userspace

thanx for the suggestions. i'm just starting using userspace as a way to 
transfer data from (service)program to program. so i'm just gathering some 
experiences.

thanx.

mihael knezevic

-----Ursprüngliche Nachricht-----
Von: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im 
Auftrag von Alan G. Campin
Gesendet: Montag, 26. Juni 2006 23:29
An: rpg400-l@xxxxxxxxxxxx
Betreff: RE: writing to userspace

I think a slight misunderstanding. The number of occurrences is not number 
occurrences that you want. You always use the maximum number of occurrences 
which is 32767 for Multiple Occurrence Data Structures, 65537 for array and 
32766 for SQL Arrays (Multiple Occurrence Data Structures). 
 
Code is same for every program.
 
You might use 2 or you might use 50 but you always declare at max. Because it 
is based on pointer, never uses more than you request and User Spaces handles 
the extension automatically. All number means is that the run time will stop 
you if you exceed the max occurrences. 
 
One other suggestion. If you are going to use pointer math, you might want to 
write a procedure and put in a service program with other general purpose 
functions to do the work so you end up with:
 
Types are below are standard types Standard Pointer(StdPTR), Standard 
Integer(StdInt), Standard Integer Small(StdIntSml).
 
 * Calculate pointer on array up to 3 dimensions. 
d GENP_GetPointerToArrayOccurrence...
d                pr           Like(StdPtr)
d   PR_BasePointerToUserSpace...
d                             Like(StdPtr)
d   PR_RecordSize...
d                             Like(StdInt)
d   PR_Demension1...
d                             Like(StdIntSml)
d   PR_Demension2...
d                             Like(StdIntSml)
d                             Option(*NoPass)
d   PR_Dimension3...
d                             Like(StdIntSml)
d                             Option(*NoPass)
 /Free
 
  // Calculate pointer on single dimensioned array.
  ptrDataStructure = GENP_GetPointerToArrayOccurance(BasePointer         :
                                                     %Size(DataStructure):
                                                     1                   );
 
  // Calculate pointer on two dimension array. 
  ptrDataStructure = GENP_GetPointerToArrayOccurance(BasePointer         :
                                                     %Size(DataStructure):
5                                            :
2                   );
 

From that point on, you do not have to remember the math each time. 

 
You are probably better at the math than I am. Every time I write the math, I 
always make some mistake so write it once and use it over and over. 
 
Anyway, just a suggestion. 
 
 
thanx. allready tried that and it works really fine. but i like the idea of 
__not__ having to set the number of elements at the time writing the code. but 
thanx.
 
mk
 
-----Ursprüngliche Nachricht-----
Von: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im 
Auftrag von Alan G. Campin
Gesendet: Freitag, 23. Juni 2006 18:11
An: rpg400-l@xxxxxxxxxxxx
Betreff: RE: writing to userspace
 
A simpler way to do it is to let the compiler handle the pointer math for you. 
This works find as long as you will not have more than 65537 records for array 
of records or 32767 for multiple occurrence data structure. 
 
First way is to use a multiple occurrence data structure.  
 
d dsStructure...
d                           ds                      Qualified
d                                                   Occurs(32767)
d                                                   Based(ptrStructure)
d  YourField1...
d  Yourfield2...