Preconditions (SAP Library - Simple Transformations)

Preconditions

For the content precond of attribute using of an element tt:cond, you can specify the following preconditions. The operand of the precondition can be a data node specified in the form dnode.

State Queries

Precondition	Description
exist(dnode)	Met if an ABAP data object is bound to the node
type-C(dnode)	Met if an ABAP data object is bound to the node, which is of type c
type-D(dnode)	Met if an ABAP data object is bound to the node, which is of type d
type-F(dnode)	Met if an ABAP data object is bound to the node, which is of type f
type-I(dnode)	Met if an ABAP data object is bound to the node, which is of type i
type-N(dnode)	Met if an ABAP data object is bound to the node, which is of type n
type-P(dnode)	Met if an ABAP data object is bound to the node, which is of type p
type-T(dnode)	Met if an ABAP data object is bound to the node, which is of type t
type-X(dnode)	Met if an ABAP data object is bound to the node, which is of type x

Example

The element X is considered during a serialization only if the ABAP data object bound to ROOTis of type c.

<tt:transform xmlns:tt="http://www.sap.com/transformation-templates">

<tt:root name="ROOT"/>

<tt:template>
    <tt:s-cond using="type-C(ref('ROOT'))">
      <X>
        ...
      </X>
    </tt:s-cond>
</tt:template>

</tt:transform>

Instead of "type-C(ref('ROOT'))" you could also write "type-C(ROOT)".

Linking Several Preconditions

You can specify a precondition as a list of several of the above preconditions, separated by commas. Such a precondition is met if all preconditions in the list are met. Within the list, every data node may appear only once.

Example

The element X is considered during a serialization only if the ABAP data object bound to ROOT1is of type i and the ABAP data object bound to ROOT2 is of type f.

<tt:transform xmlns:tt="http://www.sap.com/transformation-templates">

<tt:root name="ROOT1"/>
<tt:root name="ROOT2"/>

<tt:template>
    <tt:s-cond using="type-I(ROOT1), type-F(ROOT2)">
      <X>
        ...
      </X>
    </tt:s-cond>
</tt:template>

</tt:transform>