ARTICLE
ST - Addressing the Current Node
In all ST commands in which the name of a node can be specified,
the current node can be addressed explicitly with
$ref . An alias name can be also be defined for $ref in
tt:loop loops where internal tables are
transformed. If specification of the node is optional, ST
commands use the current node by default.
Note
If the current node is undefined, it cannot be addressed using
$ref
and ST commands that work implicitly with the current node
cannot be executed.
Example
The following ST program can be used to serialize a nested ABAP
structure:
<(><<)>tt:transform
xmlns:tt="http://www.sap.com/transformation-templates">
tt:root name="ROOT"/
<(><<)>tt:template>
<(><<)>X tt:ref="ROOT">
<(><<)>X1 tt:ref="$ref.COL1">
tt:value ref="$ref" /
<(><<)>/X1>
<(><<)>X2 tt:ref="$ref.COL2">
tt:value ref="$ref" /
<(><<)>/X2>
<(><<)>X3 tt:ref="STRUC2">
<(><<)>X1 tt:ref="COL1">
tt:value/
<(><<)>/X1>
<(><<)>X2 tt:ref="COL2">
tt:value/
<(><<)>/X2>
<(><<)>/X3>
<(><<)>/X>
<(><<)>/tt:template>
/tt:transform
In the example, subnodes COL1 and COL2 are set as the
current node in the surrounding elements of the tt:value commands
with ROOT and STRUC2 , respectively. In the first two
elements, the current node is addressed explicitly using $ref for
demonstration purposes. The current node is also specified using
$ref in the first two tt:value commands, while specification
is implicit in the other two tt:value commands.
Also see the example for calling a transformation in the
tt:value , Structures section.
Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved