Dynamic Bapi call - Problem with field symbols (challenging)

Former Member — Fri, 25 May 2007 16:34:35 GMT

Hi guys, I'm trying to implement a method that calls a bapi dynamically.

I try to create a type structure using RTTS and them fill each field dinamically... unfortunaly when I assign a data reference to a field symbol, casting it, it keeps giving me an error that the field symbol has no structure.

Please see the code above and give me ideias.

method CALLBAPI.

type-pools ABAP.

DATA: l_exceptionsTable TYPE ABAP_FUNC_EXCPBIND_TAB,

L_ParameterType TYPE REF TO cl_abap_structdescr,

L_ParameterTab TYPE STANDARD TABLE OF REF TO cl_abap_structdescr,

L_CompTab TYPE cl_abap_structdescr=>component_table,

L_Component TYPE CHAR30.

DATA: dref TYPE REF TO DATA.

FIELD-SYMBOLS: <l_parametersTable> TYPE ABAP_FUNC_PARMBIND,

<L_Struct_Components> TYPE abap_componentdescr,

<fs> TYPE ANY.

Get exporting Structures

LOOP AT L_PARAMETERSTABLE ASSIGNING <l_parametersTable> WHERE kind =

abap_func_exporting.

L_ParameterType ?= cl_abap_typedescr=>describe_by_name(

<l_parametersTable>-name ).

L_CompTab = L_ParameterType->get_components( ).

CREATE DATA dref TYPE HANDLE L_ParameterType.

ASSIGN dref->* TO <fs> CASTING TYPE HANDLE L_ParameterType.

LOOP AT L_CompTab ASSIGNING <L_Struct_Components>.

L_Component = <L_Struct_Components>-name.

number '1' is for tests purpose.
****!!!!!!!!!*****!!!!!****THIS LINE GIVES AN ERROR:

*The data object "<FS>" has no structure and therefore no component

*called "" .

<fs>-(L_Component) = '1'.

ENDLOOP.

*... need some code here...

call function l_bapi_name

PARAMETER-TABLE

l_parametersTable

EXCEPTION-TABLE

l_exceptionsTable.

endmethod.

Message was edited by:

Luis Pereira

Message was edited by:

Luis Pereira

Message was edited by:

Luis Pereira

Re: Dynamic Bapi call - Problem with field symbols (challenging)

Former Member — Fri, 25 May 2007 17:08:05 GMT

try something like this..

field-symbols : <FS> type standard stable. " change the declaration.

data : l_value(20).

Field-symbols : <FS1> type any.

l_value = (L_Component).

Assign component l_value of structure <FS> to <FS1>.

<FS1> = '1'.

Re: Dynamic Bapi call - Problem with field symbols (challenging)

Former Member — Fri, 25 May 2007 17:11:47 GMT

The <FS> is defined TYPE ANY so you can't indicate the name of a possible field of <FS>, because the system see <FS> like a structure only at run time:

<b><fs>-(L_Component) = '1'. <----

</b>

Try to use another field-symbols:

ASSIGN COMPONENT L_COMPONENT OF STRUCTURE <FS> TO <COMP>.
IF SY-SUBRC = 0.
  <COMP> = '1'.
ENDIF.

Max

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Dynamic Bapi call - Problem with field symbols (challenging)

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Re: Dynamic Bapi call - Problem with field symbols (challenging)