How to access to dynamic data's structure before runtime?

[Former Member]

Hi all,

I am declaring a data that structure depend on a parameter (wich have deep structure).

My requirement is to access to its components before runtime.

example:

parameters : p_tab type dd03L-fieldname.

data : itab type ref  to data..

create data itab type (p_tab).

Then i need to insert values on itab-row.

NB: In my program, all the parameters have the structure : controller, row .

I have the error message itab has no structure and therefore no component called row.

Thanks.

[Former Member]

Hi all,

I am declaring a data that structure depend on a parameter (wich have deep structure).

My requirement is to access to its components before runtime.

example:

parameters : p_tab type dd03L-fieldname.

data : itab type ref  to data..

create data itab type (p_tab).

Then i need to insert values on itab-row.

NB: In my program, all the parameters have the structure : controller, row .

I have the error message itab has no structure and therefore no component called row.

Thanks.

[JuanCarlosDelga]

Hi Raj,

You have dynamic data but you are trying to access them in a static way.

First option, use field-symbols. and assign

DATA: dref TYPE REF TO DATA.
TYPES: booking TYPE sbook.
FIELD-SYMBOLS: <fs> TYPE ANY.

CREATE DATA dref TYPE booking.
ASSIGN dref->* TO <fs>.

Regards.

JCD

[Clemenss]

Hi Raj,

you may check the structure

AT SELECTION-SCREEN ON p_tab.

PERFORM check_p_tab USING p_tab.

FORM check_p_tab

  USING p_tab TYPE dd03L-fieldname.

  FIELD-SYMBOLS:

    <any> TYPE any,

    <any2> TYPE any.

  DATA:

    lr_itab  TYPE REF TO DATA.

  CREATE DATA lr_itab TYPE (p_tab).

  IF sy-subrc <> 0.

    MESSAGE TYPE 'E' "p_tab not defined in data dictionary

  ELSE.

    ASSIGN lr_itab->* TO <any>.

    ASSIGN COMPONENT 'ROW of STRUCTURE <any> to <any2>.

    IF sy-subrc <> 0.

      MESSAGE TYPE 'E' "p_tab has no component 'ROW'.

    ENDIF.

  ENDIF.

ENDFORM.

This is just to give you the idea. BTW create data itab type (p_tab) will never create an internal table. Syntax is create data itab type TABLE OF (p_tab).

Regards,

Clemens

[Former Member]

Thanks ,

But if i use this method, i'll have the first field symbol <any> composed by: Controller (standard table) and Row (deep structure), and the second one <any2> composed by Row (deep structure).

Suppose that i've filled <any2> with the appropriate values, how to insert it into <any>-row?? Because my requirement is to fill <any>-row with values.

[Clemenss]

Hi Raj,

may be your requirement is not too clear, you might give an example. Anyway, if you want to access a component wich is an internal table, define the field-symbol as TYPE [STANDARD] TABLE and APPEND to this table.

You may use RTTS run time type services to analyze your structure further, check classes CL_ABAP_*DESCR which may help you with that. See also SAP help

ABAP Keyword Documentation http://help.sap.com/abapdocu_702/en/abenrtti.htm

Regards

Clemens

[Former Member]

My exact requirement is to send Data to dynamic proxy.

these are steps I dhould do:

step 1: select * from ztable into itab.

step 2: move-corresponding wa to record-row

step 3: append  record to output-mtXXX-records

step 4: export output using a method contained into proxy's SI.

actually, i have filled record-row using two field symbol as you advised me.

otherwise, i did same thing with output : <fs1> for output (without type)

                                                                <fs2> for mtXX   (without type)

                                                                <fs3> for records (type standard table)

i did: append record to <fs3>. it was ok.

now when i try to attach <fs3> to <fs2> it dump because <fs3> has no structured type.