Data Pipeline‚Äôs query engine allows you to use XPath to query XML, JSON, and Java objects.  This walkthrough will show you how to query Java objects using XPath and save the results to a CSV file.  While the reading and writing will be done with the JavaBeanReader and CSVWriter classes, you can swap out the CSVWriter for any other endpoint or transformation that Data Pipeline supports.

Continue reading:  How to Query Java Objects with XPath