Comments
SAP ST TT CALL documentation, setup help and example usage
ARTICLE
ST - tt:call , Calling Transformations
Syntax
[ tt:with-root name="root1" [ref="node1"] /
tt:with-root name="root2" [ref="node2"] /
...]
[<(><<)>tt:with-parameter name="para1"
[ref="node1"|val="val1"|var="var1"] /
<(><<)>tt:with-parameter name="para2"
[ref="node2"|val="val2"|var="var2"] /
...]
/tt:call
Effect
In an ST program, you can use the tt:call statement to call a different ST program trafo , as follows: The ST
program trafo must exist actively in the repository.
trafo is not case-sensitive.
The ST command tt:with-root bind the
data roots root1 , root2 , ... of the main template of the called transformation to the nodes node1 ,
node2 , ... of the current transformation, that is, pass to these data roots the ABAP data objects that are currently bound to the specified nodes. 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 command
tt:with-parameter . As actual parameters, you can use ref to specify data roots, var to specify variables and val to specify values. Depending on the kind of formal parameter, the values of the specified actual parameters are either passed in the call or used when the called ST program ends.
Example
In the ST program below, another ST program is called in a
tt:loop loop .
xmlns:tt="http://www.sap.com/transformation-templates">
tt:root name="ROOT"/
<(><<)>tt:template>
<(><<)>tab1>
<(><<)>tt:loop ref="ROOT">
<(><<)>key>
tt:value ref="key" /
<(><<)>/key>
<(><<)>tt:call transformation="...">
tt:with-root name="ROOT" ref="values"/
<(><<)>/tt:call>
<(><<)>/tt:loop>
<(><<)>/tab1>
<(><<)>/tt:template>
/tt:transform
If the called ST program is implemented as shown below, the transformation has the same function as the example
of transforming internal tables.
xmlns:tt="http://www.sap.com/transformation-templates">
tt:root name="ROOT"/
<(><<)>tt:template>
<(><<)>tab2>
<(><<)>tt:loop ref="ROOT">
<(><<)>value>
tt:value/
<(><<)>/value>
<(><<)>/tt:loop>
<(><<)>/tab2>
<(><<)>/tt:template>
/tt:transform
Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved
