topic Re: clean programming in Application Development and Automation Discussions

clean programming

Former Member — Fri, 17 Jun 2011 15:12:55 GMT

dear all,

my problem to implement a dynamic programming.

What is to do?

More details here in this two points:

I have here an ITAB which is DYNAMIC!!!

loop at ITAB assigning <fs_wa>

1) Here I have to get the table keys of the ITAB
2) I have to search with the primaery key values in the same table ITAB.

endloop.

how I have to point 2. Is there any method or fuba in sap standard?

thank you very much

Moderator message: please use more descriptive subject lines for your posts.

Edited by: Thomas Zloch on Jun 18, 2011 11:03 AM

Re: clean programming

Sandra_Rossi — Fri, 17 Jun 2011 18:39:18 GMT

Hi handeglo,

1)  Here I have to get the table keys of the ITAB

Using RTTI (especially class CL_ABAP_TABLEDESCR, search forum and read its documentation for more information)

2) I have to search with the primaery key values in the same table ITAB.

READ TABLE may be used with dynamic fields, have a look at its documentation (it seems you don't need LOOP AT as you use the primary key).

Sandra

Re: clean programming

Former Member — Sat, 18 Jun 2011 03:48:46 GMT

When you say this ITAB is dynamic, it means generic (e.g. TYPE ANY)?

Have a look at [Field Symbols|http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb3860358411d1829f0000e829fbfe/frameset.htm].

You dont need to know column name:


DATA: BEGIN OF LINE,
        COL1 TYPE I VALUE '11',
        COL2 TYPE I VALUE '22',
        COL3 TYPE I VALUE '33'.
DATA: END OF LINE.

DATA: COMP(5) VALUE 'COL3'.

FIELD-SYMBOLS: <F1> TYPE ANY, 
               <F2> TYPE ANY, 
               <F3> TYPE ANY.

ASSIGN LINE TO <F1>.
ASSIGN COMP TO <F2>.

DO 3 TIMES.
  ASSIGN COMPONENT SY-INDEX OF STRUCTURE <F1> TO <F3>.
  WRITE <F3>.
ENDDO.

ASSIGN COMPONENT <F2> OF STRUCTURE <F1> TO <F3>.
WRITE / <F3>.


TABLES sbook.

DATA: name1(20) TYPE c VALUE 'SBOOK-FLDATE',
      name2(20) TYPE c VALUE 'NAME1'.

FIELD-SYMBOLS <fs> TYPE ANY.

ASSIGN TABLE FIELD (name1) TO <fs>.
WRITE: / 'SY-SUBRC:', sy-subrc.

ASSIGN TABLE FIELD (name2) TO <fs>.
WRITE: / 'SY-SUBRC:', sy-subrc.

Re: clean programming

Sandra_Rossi — Sat, 18 Jun 2011 10:02:18 GMT

Just one remark: TABLES and ASSIGN TABLE FIELD are obsolete (SAP library: "TABLE FIELD before (name) is only possible outside of classes" which means obsolete in SAP world). Use ASSIGN COMPONENT ... OF STRUCTURE instead, as in your first example).

Re: clean programming

Former Member — Sat, 18 Jun 2011 13:51:01 GMT

Uh, I realized that CL_ABAP_TABLEDESCR is cleaner than field-symbols...