Creating and accessing a node under the node (Context)

[Former Member]

Hi all,

I need your help on designing context nodes.

What I need is

     NodeA(o..n)

               --------child1(0...n)

               --------child2(1..1)

             -----childattribute (String)

Iam unable to figure out how to fill values and access the child nodes (child 1 and child 2).

Any code snippets would be helpfull.

I tried retrieving the child1 using get_child_node of nodeA reference but it is not working when nodeA is 0..n (It works when nodeA is 1..1).

Thanks and regards

M Karthiheyan

[Former Member · Accepted solution]

Hi all,

Thanks for your answers ..

I have solved the problem.

Initially the entire node was empty.

So to bind values to subnode I need reference of the element referring to the current instance.

When I bind a structure to the parent node , it returns me the reference as element for that instance with which I can get the child nodes and bind table values .

Code Snippet

          le_parent = ln_parent->bind_structure( new_item = ls_parent     set_initial_elements = abap_false ).

          ln_child= le_parent->get_child_node( 'child' ).

        ln_child->bind_structure( new_item = ls_child
                                             set_initial_elements = abap_false ).

Thanks and regards,

Karthiheyan M

[ashish_shah]

Check this thread.

http://scn.sap.com/thread/3156362

Key is to understand "A Child node exists on a Parent Element"

Regards,

Ashish Shah

[Former Member]

Hello Karthikeyan ,

DATA : LT_Contextnode_elements(0..N)  TYPE wdr_context_element_set,

LT_Contextnode_elements  TYPE REF TO if_wd_context_element,

lt_child_node_table type table of wd_this->elements_child_table ,

Lo_Child_node  TYPE REF TO if_wd_context_node.

* Get the refence of all the parentnode elements

LT_Contextnode_elements  = lo_node->get_elements( ).

* Loop at the elements for indiviual refence and set the subnode of *0..n * Cardinality

LOOP AT LT_Contextnode_elements INTO LS_Contextnode_elements.

*Get Refence of child node

Lo_Child_node =LS_Contextnode_elements->get_child_node( name = ‘CHILD_NODE’ ).

Lo_Child_node->bind_table( new_items = lt_child_node_table set_initial_elements = abap_true ).

ENDLOOP .

Thanks ,

Venkat ratnam naidu

[Sharathmg]

Hello Karthikeyan,

Here is the algorithm to fill the context nodes in WD ABAP:

1. Declare variable referring to the context node:  

MY_NODE type ref to IF_WD_CONTEXT_NODE.

2. Obtain the reference to the actual context node:

MY_NODE = WD_CONTEXT->GET_CHILD_NODE( ' <Name of the node> ' ).

3. Obtain the values in an internal table which is related to the type of the node

4. Bind the values to the node

MY_NODE->BIND_ELEMENTS ( <Value table> ).

Use the code wizard initally for understanding.

Regards,

Sharath

[former_member184578]

Hi,

Use Web Dynpro  Code wizard ( magic stick button, beside pattern button in the toolbar ) and select the node and use read or set. It will automatically generate the code.

Else if you want to access attributes inside child node, write like this,

  lo_nd_nodeb = wd_context->path_get_node( path = `NODEA.NODEB` ).

where nodeb is child of nodea.

Use code wizard, which generates the required code automatically.

Hope this helps u,

Thanks & Regards,

Kiran.