ARTICLE
ST - Tree Structure of the Data Nodes
The starting points of any addressing of ABAP data in an ST
program are the data roots of the main
template declared using tt:root at
transformation level. These data roots are the interfaces from the
ST program to the calling ABAP program. When a simple transformation
is called, any ABAP data object (reference variables or data objects
that have reference variables as components are currently excluded) can
be bound to any data root.
Each data root has its own tree structure, which can be used to address
the components of the bound data object. Addressing subnodes of a data
root is equivalent to referring to the components of the data object
bound to the data root. The tree structures of the individual data roots
are independent of one another.
The addressing of data nodes in the individual tree structures always
starts at the data roots.
Note
Each template uses its own tree structures. Only the main template uses
the data roots declared at transformation level that are bound directly
to the ABAP data objects during transformation. When
subtemplates are called, local data roots
are bound to current data nodes of the caller.
Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved