Field symbols using ASSIGN COMPONENT Statement...

[vamsilakshman_pendurti]

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.

[rajkumarnarasimman]

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.

[former_member202818]

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

[matt]

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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