DTL <transform> - Business Process and Data Transformation Language Reference

Attribute	Description	Value
sourceClass	Required. The class name of the input object for the data transformation.	The name of a valid object and property.
targetClass	Required. The class name of the output object for the data transformation.	The name of a valid object and property.
sourceDocType	Optional. When the input object is a virtual document such as an HL7 message, this string identifies its DocType.	A string.
targetDocType	Optional. When the output object is a virtual document such as an HL7 message, this string identifies its DocType.	A string.
language	Optional. The name of the language used for expressions and code blocks within this data transformation. Any expressions found in the business process, as well as lines of code within <code> elements, must use the specified language. If the <transform> does not specify a language, the default is ObjectScript. MVBasic is not supported.	The name of a language: basic or objectscript.
create	Optional. The create option desired for the target object. If not specified, the default is new.	This can take one of the following values: new, copy, or existing as detailed in the following description.

Element	Purpose
<annotation>	Optional. A text string that describes the <transform> element.
Most activities	Optional. <transform> may contain zero or more of the following elements in any combination: <assign>, <code>, <foreach>, <if>, <sql>, <subtransform>, or <trace>.

The <transform> element is the outermost element for a DTL document. All the other DTL elements are contained within a <transform> element. Within the <transform>, the two objects have the names source and target, respectively. For example:

<transform targetClass='Demo.DTL.ExampleTarget'
           sourceClass='Demo.DTL.ExampleSource'
           create='new'
           language='objectscript'>

       <trace value='"Convert from lowercase to uppercase"'/>
       <assign property='target.UpperCase'
          value='$ZCONVERT(source.LowerCase,"U")'
          action='set'/>

</transform>

Alternatively, the sourceClass and targetClass may identify virtual documents such as HL7 messages. In this case the sourceDocType and targetDocType attributes are needed to tell Ensemble which message structure to expect in the virtual document.