How to node below at the node to read

[Former Member]

Hi Experts,

I want to read node below at the node. This is work a sample but I have got a problem.

That is my context struck.

http://img12.imageshack.us/i/78814932.jpg/

I fill below node with supply function.

When I want to read below node, I see this error "Access via 'NULL' object references not possible".

I use code wizard for read below node.

    DATA lo_nd_master TYPE REF TO if_wd_context_node.
    DATA lo_el_master TYPE REF TO if_wd_context_element.
    DATA lt_master TYPE wd_this->elements_master.
    DATA ls_master TYPE wd_this->element_master.
    DATA ls_martial TYPE wd_this->element_martial.
    DATA lv_martial LIKE ls_martial-medeni.

    lo_nd_master = wd_context->get_child_node( name = wd_this->wdctx_master ).

    IF lo_nd_master IS INITIAL.
    ENDIF.

    lo_el_master = lo_nd_master->get_element(  ).

    IF lo_el_master IS INITIAL.
    ENDIF.

    lo_nd_master->get_static_attributes_table(
      IMPORTING
        table = lt_master ).

    DATA lo_nd_martial TYPE REF TO if_wd_context_node.
    DATA lo_el_martial TYPE REF TO if_wd_context_element.
 
   lo_nd_master = wd_context->get_child_node( name = wd_this->wdctx_master ).

    IF lo_nd_master IS INITIAL.
    ENDIF.

   lo_nd_martial = lo_nd_master->get_child_node( name = wd_this->wdctx_martial ).

   IF lo_nd_martial IS INITIAL.
   ENDIF.

   lo_el_martial = lo_nd_martial->get_element(  ).

   IF lo_el_martial IS INITIAL.
   ENDIF.

   lo_el_martial->get_attribute(
      EXPORTING
        name =  `MARTIAL`
      IMPORTING
        value = lv_martial ).

In this line is going lo_nd_martial empty.

 lo_nd_martial = lo_nd_master->get_child_node( name = wd_this->wdctx_martial ). 

And then I read get_attribute compared with the error.

How do I fill lo_nd_martial?

Thanks in advance.

Izzeddin YILMAZ

[Former Member]

Thank you so much

[Former Member]

Hi,

I assume that marital node is below the master node right. what is the cardinality for the both the nodes.

If the cardinality of marital is 1:N or 0:N then you need to speicify the element index to get the get_elemnet mehtod.

DATA lo_nd_master TYPE REF TO if_wd_context_node.
    DATA lo_el_master TYPE REF TO if_wd_context_element.
    DATA lt_master TYPE wd_this->elements_master.
    DATA ls_master TYPE wd_this->element_master.
    DATA ls_martial TYPE wd_this->element_martial.
    DATA lv_martial LIKE ls_martial-medeni.
 
    lo_nd_master = wd_context->get_child_node( name = wd_this->wdctx_master ).
 
    IF lo_nd_master IS not INITIAL.
    lo_el_master = lo_nd_master->get_element(  ).  "speicfy index if carinality is 1:N or 0:N
    lo_nd_master->get_static_attributes_table(
      IMPORTING
        table = lt_master ).
    ENDIF.
 
 
    IF lo_el_master IS not INITIAL.
    ENDIF.
 

    DATA lo_nd_martial TYPE REF TO if_wd_context_node.
    DATA lo_el_martial TYPE REF TO if_wd_context_element.
 
   lo_nd_master = wd_context->get_child_node( name = wd_this->wdctx_master ).
 
    IF lo_nd_master IS not INITIAL.     "change
   lo_nd_martial = lo_nd_master->get_child_node( name = wd_this->wdctx_martial ).
    ENDIF.
 

   IF lo_nd_martial IS not INITIAL.
   lo_el_martial = lo_nd_martial->get_element(  ). "speicfy index if carinality is 1:N or 0:N
   ENDIF.
 

   IF lo_el_martial IS not  INITIAL.
    lo_el_martial->get_attribute(
      EXPORTING
        name =  `MARTIAL`
      IMPORTING
        value = lv_martial ).
   ENDIF.

Refer this link -

In both the nodes there should be some common field so that you can read the 2nd node element.

Regards,

Lekha.