Defining the Transformation Direction

You can use the following ST commands to limit parts of templates for execution during serialization or deserialization:

Syntax Syntax

```
<tt:serialize>
```
```
  ...
```
```
</tt:serialize>
```
```
<tt:deserialize>
```
```
  ...
```
```
</tt:deserialize>
```

End of the code.

All the template elements listed within the tt:serialize element are only considered during serialization. All the template elements listed within the tt:deserialize element are only considered during deserialization.

Example

The following Simple Transformation serializes a structure and deserializes to an internal table:

Syntax Syntax

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

```
  <tt:root name="ROOT1"/>
```
```
  <tt:root name="ROOT2"/>
```
```
  <tt:template>
```
```
    <X>
```
```
      <tt:serialize>
```
```
        <Y>
```

          <tt:value ref=".ROOT1.COL1" />

```
        </Y>
```
```
        <Y>
```

          <tt:value ref=".ROOT1.COL2" />

```
        </Y>
```
```
        <Y>
```

          <tt:value ref=".ROOT1.COL3" />

```
        </Y>
```
```
      </tt:serialize>
```
```
      <tt:deserialize>
```
```
        <tt:loop ref=".ROOT2">
```
```
          <Y>
```
```
            <tt:value />
```
```
          </Y>
```
```
        </tt:loop>
```
```
      </tt:deserialize>
```
```
    </X>
```
```
  </tt:template>
```
```
</tt:transform>
```

End of the code.

The following ABAP program can call the transformation:

Syntax Syntax

```
DATA xml_string TYPE string.
```
```
DATA: BEGIN OF struc,
```
```
        col1 TYPE i VALUE 1,
```
```
        col2 TYPE i VALUE 2,
```
```
        col3 TYPE i VALUE 3,
```
```
      END OF struc.
```
```
DATA itab TYPE TABLE OF i.
```
```
CALL TRANSFORMATION ...
```
```
  SOURCE root1 = struc
```
```
  RESULT XML xml_string.
```
```
CALL TRANSFORMATION ...
```
```
  SOURCE XML xml_string
```
```
  RESULT root2 = itab.
```

End of the code.

After deserialization, the internal table contains three rows with the values of the structure components.