Binding Nested Structures (Nodes) in to Context

[Former Member]

Hey, so i am having issues with binding nested Nodes to the context.

I.e. My context contains

    NODE - form interface

        L attribute - notif_no

        L node - addr

                    L attribute - STREET

                    L attribute - CITY

so my main node has 1 attributes and a nested node with two attributes..

I am Finding i can either bind the sub node, or the main node..

CODE BELLOW:

* GETS MY MAIN NODE

   lo_nd_form_interface = wd_context->get_child_node( name = wd_this->wdctx_form_interface ).

* get element via lead selection

   lo_el_form_interface = lo_nd_form_interface->get_element(  ).

* get all declared attributes

   lo_el_form_interface->get_static_attributes(

     IMPORTING

       static_attributes = ls_form_interface ).

*GETS THE NESTED NODE

* navigate from <FORM_INTERFACE> to <ADDR> via lead selection

   lo_nd_addr = lo_nd_form_interface->get_child_node( name = wd_this->wdctx_addr ).

* get element via lead selection

   lo_el_addr = lo_nd_addr->get_element(  ).

* get all declared attributes

   lo_el_addr->get_static_attributes(

     IMPORTING

       static_attributes = ls_addr ).

   lo_nd_form_interface     = wd_context->get_child_node(  wd_this->wdctx_form_interface ).

   lo_nd_addr = lo_nd_form_interface->get_child_node( wd_this->wdctx_addr ).

FILL THE NODES:

   ls_form_interface-notif_no = ls_params-notif_no.

   SELECT SINGLE *

     FROM zofr_hru_addr

     INTO ls_addr

    WHERE option_no = '1'

     AND begda <= sy-datum

     AND endda >= sy-datum.

HERE IS MY ISSUE:

   lo_nd_addr->bind_structure( ls_addr ).

   lo_nd_form_interface->bind_structure( ls_form_interface ).

If i just bind the addr structure i get the address info fine.

If i just bind the form_interface structure i get the form_interface info fine.

But i dont know how to bind them both, or how to bind the addr structure to the form_interface.

Any help would be great!!!

-Jason

[ashish_shah · Accepted solution]

If i understand right , your node structure is

Interface

|

__ Addr

Can you also specify the cardinality of both the nodes.

You need to keep this in mind when working with nested nodes.

"A Child node exists on a Parent Element"

To Bind data to a child node , you need to get access to your parent element.

e.g.

DATA lo_nd_interface TYPE REF TO if_wd_context_node.
   DATA lo_el_interface TYPE REF TO if_wd_context_element.
   DATA ls_interface TYPE wd_this->element_interface.
   DATA lo_nd_addr TYPE REF TO if_wd_context_node.
   DATA lo_el_addr TYPE REF TO if_wd_context_element.
   DATA ls_addr TYPE wd_this->element_addr.

* navigate from <CONTEXT> to <INTERFACE> via lead selection
   lo_nd_interface = wd_context->get_child_node( name = wd_this->wdctx_interface ).

* get element via lead selection
   lo_el_interface = lo_nd_interface->get_element( ).
* alternative access  via index
* lo_el_interface = lo_nd_interface->get_element( index = 1 ).

* get all declared attributes
   lo_el_interface->Set_static_attributes(
     EXPORTING
       static_attributes = ls_interface ).

   lo_nd_addr = lo_el_interface->GET_CHILD_NODE( NAME = 'ADDR'  ). "Understand how this reference if retrieved
* alternative navigation via index
* lo_nd_addr = wd_context->path_get_node( path = `INTERFACE.1.ADDR` ).

* get element via lead selection
   lo_el_addr = lo_nd_addr->get_element( ).

* set all declared attributes
   lo_el_addr->set_static_attributes(
      static_attributes = ls_addr ).

Regards,

Ashish Shah

[Former Member · Accepted solution]

On my initial read i didnt notice the SET_STATIC_ATTRIBUTES and was quite confused!!

Thank you very much! it works great now!

[bharath_k6]

Hi,

Also keep an eye on Singleton property of a node. Hope this must be suitable for your requirement.

Regards,

Bharath