topic Re: Field symbols using ASSIGN COMPONENT Statement... in Application Development and Automation Discussions

Field symbols using ASSIGN COMPONENT Statement...

vamsilakshman_pendurti — Tue, 24 Feb 2015 05:30:30 GMT

Hi Experts,

I have small confusion with Field symbols while using the statement ASSIGN COMPONENT Statement...

Check this Sample code ...as below ...

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

EX:

FIELD-SYMBOLS: <DYN_TABLE> TYPE STANDARD TABLE,
<DYN_WA>.

   DATA: FIELDNAME(20) TYPE C.
   DATA: FIELDVALUE(5) TYPE C.
   DATA: INDEX(3) TYPE C.
   FIELD-SYMBOLS: <FS1>.

DO 5 TIMES.

     INDEX = SY-INDEX.

     CONCATENATE 'FLD' INDEX INTO FIELDVALUE.
     CONDENSE   FIELDVALUE NO-GAPS.
     ASSIGN COMPONENT INDEX OF STRUCTURE <DYN_WA> TO <FS1>.
     <FS1> = FIELDVALUE.

   ENDDO.

* Append to the dynamic internal table
APPEND <DYN_WA> TO <DYN_TABLE>.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

In the above code we assign index wise component to <FS1> Field symbol from the structure <DYN_WA>.

Next line we assign FIELDVALUE (already concatenate with the 'FLD'index) to <FS1> then only the <DYN_WA> will be filled with content of Concatenated value...

How.. this procedure will be done..

Could any one please give me clarity on that.....

Program is working fine but i am not getting the Exact execution way that internally takes...

Thanks,

vamsi.

Re: Field symbols using ASSIGN COMPONENT Statement...

rajkumarnarasimman — Tue, 24 Feb 2015 05:46:05 GMT

Hi..

Here we are referring the dynamic structure fields <DYN_WA>.

consider <DYN_WA> contains 5 fields as shown below.


<DYN_WA>-field1 = 5.
<DYN_WA>-field2 = 6.
<DYN_WA>-field3 = 7.
<DYN_WA>-field4 = 8.
<DYN_WA>-field5 = 9.

We are running the loop 5 times, it shows we are fetching the first five field value

DO 5 TIMES.

"Index variable gets the loop index

INDEX = SY-INDEX.

"Concatenating the value based on index like (FLD1,FLD2, FLD3, FLD4, FLD5)

CONCATENATE 'FLD' INDEX INTO FIELDVALUE.

"Removing space here

CONDENSE FIELDVALUE NO-GAPS.

"Assigning the dynamic structure field value to Field symbol based on index, During first loop run, <FS1> assign to field Field1 and it will contain the value 5, for second run <FS1> will contain value 6

ASSIGN COMPONENT INDEX OF STRUCTURE <DYN_WA> TO <FS1>.

"Update the Field symbol value with new value

<FS1> = FIELDVALUE.

ENDDO.

Re: Field symbols using ASSIGN COMPONENT Statement...

former_member202818 — Tue, 24 Feb 2015 05:50:38 GMT

Hi Vamsi,

ASSIGN COMPONENT INDEX OF STRUCTURE <DYN_WA> TO <FS1>. "Pointing "INDEX" th field in <DYN_WA> by <FS1>.

<FS1> = FIELDVALUE. "Assigning vale to the pointer, so that the same value will get populated in <DYN_WA>.

INDEX can be position of filed in structure or name(in caps) of the filed in structure.

Regards

Sreekanth

Re: Field symbols using ASSIGN COMPONENT Statement...

matt — Tue, 24 Feb 2015 06:00:34 GMT

You've three options that will help you to help yourself.

1) Run the program in the debugger and examine the contents of the variables at each step

2) Write "WRITE" statements after each step, which WRITE the values of the variables at each step.

3) If this is a homework type question and you have to answer without running the program then dry run the program. Dry runsThis

This is not ABAP specific. This applies to any programming language. It's also a basic part of being a programmer.

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