Configuration Key 

The key that you assign to the structure must fulfill the following conditions:

●     It identifies the application in which the ALV output is displayed.

You can use the field USAGE_PATH from S_PARAM_OUT for this purpose, for example.

●     It identifies the ALV output within the application.

If multiple ALV outputs are displayed in the application, you must be able to distinguish them from one another. To do this, you can use the field ALV_COMPONENT_USAGE, for example, which returns the component usage for the individual ALV outputs.

●     It identifies the structure that is displayed in the ALV output with SET_DATA .

To do this you can use any unique character string.

If you connect three components to one another, you generate a key that identifies a structure sufficiently. In this way, a view can be assigned uniquely.

The following example shows the steps in a method SET_ALV_CONFIG_ID that are required for generating and assigning the configuration key.

 

method SET_ALV_CONFIG_ID.
[ ... ]

  data:
    l_ref_if_controller type ref to iwci_salv_wd_table,
    lr_node             type ref to if_wd_context_node,
    own_key             type string.

*... Get RELEVANT NODE of the APPLICATION CONTEXT
  lr_node = WD_THIS->APPL_get_data_node( ).

 

*... Determine name for KEy dependING on THE APPLICATION CONTEXT

  OWN_KEY = ‘ALV1’.

 

*... SET NODE of THE APPLICATION CONTEXT
  l_ref_if_controller->set_data( r_node_data = lr_node ).

[ ... ]

*... create configuration key consisting of
*    usage path, component usage, own key
  data:
    ls_param_out type if_salv_wd_table=>s_type_param_config_out,
    ls_param_in  type if_salv_wd_table=>s_type_param_config_in,
    l_key        type string,
    l_key_32     type string.

  ls_param_in-action = if_salv_wd_table=>key.
  ls_param_out = l_ref_if_controller->get_config_data( ls_param_in ).

  concatenate
    ls_param_out-usage_path
    ls_param_out-alv_component_usage
    own_key
  into
    l_key
  separated by '&'.

*... Hash configuration key to unique key of 32 chars length
  try.
    l_key_32 = cl_rsmds_hash_utilities=>to_hash_c32( l_key ).
    catch cx_rsmds_input_invalid cx_rsmds_input_invalid_type.
  endtry.

[ ... ]

*... set new configuration key
  ls_param_in-action                 = if_salv_wd_table=>set.
  ls_param_in-config_key-config_type = '08'. 
  ls_param_in-config_key-config_id   = l_key_32.

  l_ref_if_controller ->get_config_data( ls_param_in ).