About SOM expressions

The XFA Scripting Object Model (SOM) is a model for referencing values, properties and methods within a particular Document Object Model (DOM). A DOM structures objects and properties as a tree hierarchy. XFA SOM expressions provide easy access to these objects and properties through a straightforward object reference syntax.

The SOM specification is described in detail in the XML Forms Architecture (XFA) Specification.

To find out what the SOM expression to a particular XFA object is, use the somExpression scripting property. By using this, the full expression to the object can be extracted.

Example 10

ECMA-script example

this.rawValue = this.somExperssion;

If you place this script on the object for which you want the SOM expression, you will get the SOM expression assigned to the value of that object and the string will be printed in the output document.

 

For more information about SOM expressions, see Adobe Digital Enterprise Platform Document Services – Designer 10.0 Scripting Basics.