Small query in ABAP dynpro

Hi Experts,
I am new to ABAP webdynpro. I have created a sample application following the example provided in the SAP help. In one of "supply function" I have used the below code for getting the node in a context
datanode = wd_context->get_child_node( name = 'DATA' ).
wd_context refers to the interface IF_WD_CONTEXT_NODE. I went to this interface and identified the method get_child_node. But when I double click on the method nothing happens. I want to see the coding , how the system gets the node using this method.
thanks
sankar

Hi Sankar,
IF_WD_CONTEXT_NODE is an interface and hence has no code in it. You need to find the code inside a class which implements this interface. In this case, you need to go to class CL_WDR_CONTEXT_NODE.
Again, CL_WDR_CONTEXT_NODE is an abstract class. So you need to find the implementation inside a subclass. In this case, the subclasses are CL_WDR_CONTEXT_NODE_MAP and CL_WDR_CONTEXT_NODE_VAL. Both implement the method we are talking about.
These are general OOPS concepts.
The hierarchy of classes and interfaces can be very easily found by using the 'Object List' tool for the selected object (Short cut ctrlshiftf5)
Hope this helps.
Regards,
Neha
Message was edited by:
Neha Agrawal

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