Adding the atttributes to a node at runtime

[former_member282968]

I want to display an alv report for which the structure is binded with the node.

Now i have a requirement where i have to add some fields to that node dynamically in different scenarios. Please let me know how to about it.

Thanks in advance.

[Former Member · Accepted solution]

Along the same lines as Chris said, you can have a look at demo WD component DEMODYNAMIC present in package SWDP_DEMO. In this component assistance class you will find the code for dynamic adding attributes to a node.

[ChrisPaine]

First check if you can get away with just hiding/making visible some fields. This is much easier to do and also easier to understand when it comes to supporting your development.

Otherwise, I believe you will have dynamically create the entire node - using the IF_WD_CONTEXT_NODE_INFO method ADD_ATTRIBUTE results in dynamic attributes, which I think the ALV does not process.

Thomas Jung has once (at least) discussed how to do this:

You need to generate an RTTI Structure type using the cl_abap_structdescr=>create. You have to build up the internal table parameter p_components (type CL_ABAP_STRUCTDESCR=>COMPONENT_TABLE) for the individual components of the structure. 
So far none of this is really WDA specific. Just normal RTTS stuff to build a dynamic data object.
You cna then use the node info method ADD_NEW_CHILD_NODE. Use the static_element_rtti parameter to pass in the dynamic structure definition you just created.

[former_member282968]

Thanks Chris for the suggestion