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

Example

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

Syntax Syntax

<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>
```
```
 
```

End of the code.

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 serialization only if the ABAP data object bound to ROOT1 is of type i and the ABAP data object bound to ROOT2 is of type f.

Syntax Syntax

```
 
```

<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>
```

End of the code.