How technically Tutorial 1

Question

Hello Friends,
   I am new to ABAP web dynpro. I have done the toturial one and its work fine. I just pasted the coding from the tutorial in the method WDDOINIT.
navigate from <CONTEXT> to <SFLIGHT> via lead selection
NODE_SFLIGHT = WD_CONTEXT->GET_CHILD_NODE( NAME = `SFLIGHT_NODE` ).
bind internal table to context node <SFLIGHT>
NODE_SFLIGHT->BIND_TABLE( ITAB_SFLIGHT ).
I would like to know the above coding how does it work.
NODE_SFLIGHT is Ref to IF_WD_CONTEXT_NODE where method is GET_CHILD_NODE. but not able to see the coding inside the method how its works.
give me a brief explation how does the above coding works?
Thanks,
John.

Answer 1

Hi,
    see once when you create a view and add the context nodes and attibutes into it. then Webdynproframework creates a class of type view you created and methods will be created internally and you will not be able to see the code.
and the code works in the following way.
1. to display any values on the table(for ex the Sflight in your case) you need to create the refrence to the Node where you create in your case it is 'SFLIGHT_NODE'. but if you have two nodes 'NODE1' and 'NODE2' in that case you need to specify the Node name under which you will be having the Table UI element.
2. binding the Values form the internal table to the Context Attributes this concept is what is called as data binding
cheers