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author's profile photo Former Member
Former Member

Adding dynamic Field names to an Extract Structure

I am having a requirement where I need to read the Characteristics values from the Infocube. This Infocube is having multiple dimensions.

I am getting the Dimension table structure into a field-symbol.The fieldnames are coming dynamically into a field-symbol.The Field-symbol will have different structures at different moment( i.e. for the differenet dimensions). But Finally I need all the Characteristics values for the dimensions into some internal table kind of structure.Hence I store the data in the Field-symbol into some table structure( Here I am using Field Groups) as the next time the Field-symbol will have a different structure.

Is there any way where I can transfer the Fieldnames into this Field-group. I am not able to get the fieldnames as they are coming dynamically.

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  • author's profile photo Former Member
    Former Member
    Posted on Aug 04, 2004 at 01:09 PM


    I didn't actually get the whole picture of what you're doing, but if you need to get fieldnames of anything that can be assigned to a field symbol, you should use class CL_ABAP_TYPEDESCR and it's subclasses. You can get details by pressing F1 on DESCRIBE FIELD command and pressing "RTTI system" link.

    For example, this is how I'm getting the fieldnames of a table field symbol:

    DATA: o_table_desc TYPE REF TO cl_abap_tabledescr,

    o_struc_desc TYPE REF TO cl_abap_structdescr,

    t_components TYPE ABAP_COMPDESCR_TAB.

    o_table_desc ?= cl_abap_typedescr=>describe_by_data( <fs> ).

    o_struc_desc ?= o_table_desc->get_table_line_type( ).

    t_components = o_struc_desc->components.

    You'd have to add type checks before casting operators "?=", otherwise you might get dumps.

    On the other hand, if you're trying to make a dynamical internal table, you can use method CL_ALV_TABLE_CREATE=>CREATE_DYNAMIC_TABLE

    on 4.6c. I've seen on this forum that higher SAP releases have statement


    Hope this helps!

    Kind regards,

    Igor Barbaric

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    • Former Member


      Actually I need to read the values of the characteristics of the BW infocube depending on some key characteristics.

      Now these characteristics are present in the dimensions of the Cube. I have already worked out the way of retrieveing the values but that is working for one dimensional Cube. But as the Cubes can have multidimensions so I was thinking of extracts. As the structure of the Dimension differ in the various cubes.

      I cannot use ListCube or rsbo Transaction. And the output is needed to be stored in an Internal Table.

      But the problem I am facing is regarding the storage of the varying structures in the Extract.

      Hope I have cleared the scenerio.

      Or is there any other function module or program to retieve the value of the characteristics from a multidimensional Cube.