Can FOP work backwards?

[Eric Douglas]

I know the intention of FOP is to create PDF, but since FOP did create
the PDF the code should be there to read the PDF.
I want to take a PDF (generated by FOP) and read it back in, to be able
to print it, or to display it in a Swing component.  I already have a
Swing component, if FOP can tell me enough information about what it put
in the PDF and where.