topic Checking generic data types in Application Development and Automation Discussions

Checking generic data types

gustavo_prado — Wed, 02 Apr 2014 12:47:33 GMT

Hi all,

In java, when we have a parameter/variable of a generic type, we can use the "type of" to check what is the correct type to make some attribution.

In abap, i have a function with generic table parameter, and in the function i want to check about what structure is the referencing parameter.

Somebody know how to check it?

Best regards,

Gustavo

Re: Checking generic data types

Former Member — Wed, 02 Apr 2014 13:00:02 GMT

Hi Gustavo,

you can find out using Field symbols.

1. Declare variable field-symbols : <fs_struct> type any.

2. Get reference of the Table parameter and assign to field symbol declared above.

ex: lt_table is table parameter then

ASSIGN lt_table->* TO <fs_struct>.

Now fs_struct will be pointing to structure of the Lt_table. Check structure in debug mode for more detail.

Regards,

Ravikiran.K

Re: Checking generic data types

Former Member — Wed, 02 Apr 2014 13:00:35 GMT

This message was moderated.

Re: Checking generic data types

gustavo_prado — Wed, 02 Apr 2014 13:18:28 GMT

Well,

The real situation is:

FM Table parameter:

IT_GEN TYPE STANDARD TABLE.

This IT_GEN can be structure ST_INVOICE or ST_SALESORD.

When the FM is called, i have to check about what structure is the parameter.

Thanks,

Gustavo

Re: Checking generic data types

RaymondGiuseppi — Wed, 02 Apr 2014 13:21:39 GMT

Look for RTTS class. (e.g. CL_ABAP_TABLEDESCR, CL_ABAP_STRUCTDESCR, etc.)

But with only two different structures available, coding (and maintenance) would be much easier with either two FMs (in same FG so sharing many code) or to optional parameters.

Regards,

Raymond

Re: Checking generic data types

former_member302911 — Wed, 02 Apr 2014 13:25:01 GMT

Hi Gustavo,

check this code:


DATA: lcl_typedescr     TYPE REF TO cl_abap_typedescr,
          lva_absolute_name TYPE abap_abstypename.


   lcl_typedescr            = cl_abap_typedescr=>describe_by_data( IT_GEN ).
   lva_absolute_name   = lcl_typedescr->absolute_name.

Regards,

Angelo.

Re: Checking generic data types

gustavo_prado — Wed, 02 Apr 2014 15:10:29 GMT

Thanks to all, with the cl_abap_tabledescr i did it.

Regards,

Gustavo