Now that you know what a Pentaho transformation is, and the basics around its development, let's see a concrete example, defining an easy ETL generating the PDF output of the well known my_first_report.prpt file. The first task to do is to copy the my_first_report.prpt file into the data-integration folder of your Pentaho Data Integration installation. This is required because it will be used as the current path during the execution of the transformation. If you don't have the my_first_report.prpt file available, you can download it from the https://github.com/fcorti/pentaho-8-reporting-for-java-developers repository, specifically, from the Chapter 15 - Using reports in Pentaho Business Analytics Platform/my_reports folder.
As a first step, let's run the Spoon GUI to start the...