The input files that you use to test the transformation can exist in any Eclipse project.
The following example describes a transformation input model that contains a root element that has a mailFolder attribute and a mailing element. The mailing element contains two attributes and a JET file action. The attributes are called e-mail and firstName, and the JET action creates a file by evaluating a template called letter.html.jet:

<root mailFolder="output.data/letters"> <mailing email="jsmith@email.com" firstName="Jane"/> <mailing email="sjones@letters.org" firstName="Sam"/> </root>
When you run the JET transformation, the transformation generates two letters in the letters folder of the output.data project.