What does it do? In an ST program, the statement tt:call can be used to call a different ST program trafo, as follows: The ST program trafo must exist in the repository. trafo is not case-sensitive. The ST statement tt:with-root binds the data roots root1, root2, ... of the main template of the called transformation to the nodes node1, node2, ... of the current transformation, or passes the ABAP data objects that are currently bound to the specified nodes to these data roots. If ref is not specified, the current node of the calling transaction is used. If formal parameters are declared with tt:parameter in the called ST program, these can be linked to the actual parameters with the ST statement tt:with-parameter. As actual parameters, ref can be used to specify data roots, var can be used to specify variables, and val can be used to specify values. Depending on the type of formal parameter, the values of the specified actual parameters are either passed in the call or used when the called ST program ends.
ABAP_EXAMPLE_VX5 In the ST program DEMO_ST_CALL1 below, another ST program (here: DEMO_ST_APPLY1) is called in a tt:loop loop. TRNS DEMO_ST_CALL1 If the called ST program is implemented as shown in DEMO_ST_CALL2 below, the transformation has the same function as the example of transforming internal tables. TRNS DEMO_ST_CALL2 ABAP_EXAMPLE_END
