Tuesday, June 10, 2008

WD_CONTEXT Reference Variable

WD_CONTEXT

The WD_CONTEXT attribute is a reference to the root node of the context of the controller. Regardless of the edited controller, it is always a reference variable of the type IF_WD_CONTEXT_NODE. You can use WD_CONTEXT and the interface methods to edit the content of a context node in your controller method.

This graphic is explained in the accompanying text Example

The controller context contains the MY_TABLE_NODE node. You can use the INVALIDATE_TABLE_NODE method to invalidate the values of the node elements.

method INVALIDATE_TABLE_NODE .

data: TABLE_NODE type ref to IF_WD_CONTEXT_NODE.

TABLE_NODE = WD_CONTEXT->GET_CHILD_NODE( 'MY_TABLE_NODE' ).

TABLE_NODE->INVALIDATE( ).

endmethod.

GET_CHILD_NODE and INVALIDATE are methods of the IF_WD_CONTEXT_NODE interface. Other frequently used methods are GET_ATTRIBUTE or BIND_ELEMENT, for example. For a complete list of methods and their functions, refer to the reference section of this documentation (see link above).

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