The Java interfaces defining the allowed operations for Transformation and Aggregation are shared with the Groovy language.
As a result, all the operations present in Java are also available in Groovy. Specific shortcuts are however available in Groovy only:
• You can access all getters directly without specifying a method call and the get prefix. For example, you can rewrite it.getUri() as it.uri.
• You can also access the following properties with similar shorthands:
◦ it.metas: The document metadata. For example, it.metas.company_name returns a Groovy list of strings containing the meta values for the company_name meta. You can also specify the meta name between quotes. So you could write it.metas."company_name". It is even more interesting to make it dynamic by writing it.metas."$myVar", where the variable ''myVar'' would be defined with the assignment myVar = "company_name".
◦ it.directives: The document directives. Usage is similar to it.metas.
◦ it.parts: The document parts. Usage is similar to it.metas except that values are now instances of IDocumentPart as in Java.