Create dynamic data type in structure

[Former Member]

Hi Experts,

I am new to ABAP.

In my scenario data type is varying for the field. for that I need to create dynamic data type in structure, this structure I am using for internal table for OVS search input.

Please suggest the solution for this.

Advance thanks,

Regards,

BBC

[former_member222709]

Hi Achari,

If you are not defining the structure in the Data Dictionary (SE11) and only want to define a dynamic data type structure in the ABAP Editor (SE38), then you can use Field Symbols.

FIELD-SYMBOLS v_struc TYPE ANY.

Regards,

Pranav.

[Former Member]

Hi,

I need to create dynamic data type for field while declaring structure.

like this:

BEGIN OF lty_stru_input,

FIELD1 TYPE <dynamic data type>.

END OF lty_stru_input.

here <dynamic data type> is varying like either LIFNR or WERKS or etc.,

Please suggest the solution?

Regards,

BBC

Edited by: BBC Achari on Aug 30, 2011 10:53 AM

[former_member222709]

Hi,

If you can use a complete dynamic structure at requirement, then, Field Symbols can be used. It will adopt the complete structure from which data is passed.

FIELD-SYMBOLS <v_struc> TYPE ANY.

But, if you want only a single field amongst multiple fields within a structure, then, it is tricky.

Regards,

Pranav.

[Former Member]

Please refer to the [Link|;

[franois_henrotte]

just replace the call to method DESCRIBE_BY_DATA by a call to DESCRIBE_BY_NAME and provide paramater P_NAME with a table (or structure) and field name

example: P_NAME = 'T001-BUKRS' will create a field corresponding to company code

it is often easier to remember what a field is when you see where it comes from

[Former Member]

Hi,

Please can you explain more.

Regards,

BBC

[former_member222709]

You can refer the following links for detailed explanations with exampes.

[http://wiki.sdn.sap.com/wiki/display/ABAP/Workingwithdynamictablesusingfieldsymbols]

[http://wiki.sdn.sap.com/wiki/display/ABAP/DynamicInternaltable]

If you still have some doubt, then, do let us know.

Regards,

Pranav.

[Former Member]

Hi ,

I have declared like this.

TYPES:

BEGIN OF lty_stru_input,

• add fields for the display of your search input here

FIELD1 TYPE (dynamic data type),

END OF lty_stru_input.

same structure I am using in internal table.

DATA: ls_search_input TYPE lty_stru_input.

• pass the values to the OVS component

ovs_callback_object->set_input_structure(

input = ls_search_input ).

Here (dynamic data type) is the dynamic data type is required for me.

Please tell me a example for how to create dynamic data type?.

Regards,

BBC

,

[Sandra_Rossi]

Hi,

For instance:

 data:
ls_component type abap_componentdescr,
lt_component type abap_component_tab.

*... (1) define structure components :

clear ls_component.
ls_component-name = 'FIELD1'.
ls_component-type ?= cl_abap_typedescr=>describe_by_name( 'SFLIGHT-CARRID' ).
insert ls_component into table lt_component.

clear ls_component.
ls_component-name = 'FIELD2'.
ls_component-type ?= cl_abap_elemdescr=>get_n( 4 ).
insert ls_component into table lt_component.

*... (2) create structure
data lr_strucdescr type ref to cl_abap_structdescr.
data lr_data_struc type ref to data.

lr_strucdescr = cl_abap_structdescr=>create( lt_component ).
create data lr_data_struc type handle lr_strucdescr.

field-symbols <fs> TYPE any.
assign lr_data_struc->* to <fs>.

ovs_callback_object->set_input_structure(
input = <fs> ).

Sandra

[Former Member]

Hi Sandra,

Thanks for sending the logic.

Here I need to refer structure name to query parameter,

FIELD-SYMBOLS: <ls_query_params> TYPE <structure name>,

Please can you suggest how to refer the structure name.

Regards,

BBC

[Sandra_Rossi]

Hi,

what is <structure name> exactly? is it a DDic structure?

If so, then do like this (here DDic "structure" is SFLIGHT):

data lr_data_struc type ref to data.
create data lr_data_struc type ('SFLIGHT').
 
field-symbols <fs> TYPE any.
assign lr_data_struc->* to <fs>.
 
ovs_callback_object->set_input_structure(
input = <fs> ).

Sandra

[Former Member]

Thanks for your quick reply,

I used your logic like this.

data:

ls_component type abap_componentdescr,

lt_component type abap_component_tab.

*... (1) define structure components :

clear ls_component.

ls_component-name = 'NVALUE'.

ls_component-type ?= cl_abap_typedescr=>describe_by_name( <fs_seg_v>-fieldname ).

insert ls_component into table lt_component.

*... (2) create structure

data lr_strucdescr type ref to cl_abap_structdescr.

data lr_data_struc type ref to data.

lr_strucdescr = cl_abap_structdescr=>create( lt_component ).

create data lr_data_struc type handle lr_strucdescr.

field-symbols <fs> TYPE any.

assign lr_data_struc->* to <fs>.

your logic is working fine.

here I am getting feild name (<fs_seg_v>-fieldname) from internal table.

But I need to assign same field name structure to query parameter.

FIELD-SYMBOLS: <ls_query_params> TYPE lty_stru_input.

Please can you suggest how I can refer the field name structure?

Regards,

BBC

[Sandra_Rossi]

here I am getting feild name (<fs_seg_v>-fieldname) from internal table.
But I need to assign same field name structure to query parameter.
FIELD-SYMBOLS: <ls_query_params> TYPE lty_stru_input.
Please can you suggest how I can refer the field name structure?

I don'tunderstand what you want to do, could you please explain with an example?

[Former Member]

Hi Sandra,

Now it is working fine. Thanks your support.

Regards,

BBC