topic Re: Retrieve instance( object ) from table in Application Development and Automation Discussions

Retrieve instance( object ) from table

Former Member — Tue, 02 Jun 2009 08:11:01 GMT

Hi All,

I have a table m_models which has two fields, model_id and instance. Model id is a string and instance is an instance of a class, it can be either workitem class - ZWorkitem, or invoice classs zinvoice class.

Now both of above classes are inherited from cl_bsp_controller2, and some of their data is different.

Now I want to retrieve instance of the class from table when model id is invoice, but i am not able to speficy the class type for the object that should store the instance, if i use cl_bsp_controller2 i miss some data and when i use zinvoice it gives me another error.

Can you please advise?

I can provide more details of the issue if you want.

Re: Retrieve instance( object ) from table

naimesh_patel — Tue, 02 Jun 2009 13:26:13 GMT

You can try like:


data: lo_cont type ref to cl_bsp_controller2,
      lo_inv type ref to zcl_invoice.
DATA: lo_type TYPE REF TO cl_abap_typedescr,
      lo_cast_error TYPE REF TO cx_sy_move_cast_error.

loop at t_models into la_models.
* Get the absolute name from object ref.
  lo_cont = la_models-object.
  lo_type = cl_abap_classdescr=>describe_by_object_ref( lo_cont ).

* attribute ABSOLUTE_NAME of the LO_TYPE will give you the exact type
* Use this attribute to get to know your actual class.
  try.
      lo_inv ?= lo_cont.
   CATCH cx_sy_move_cast_error INTO lo_cast_error.
  entry.
endloop.

Regards,

Naimesh Patel