I'm not sure how well it matches your use case, but you might want to look at http://xml.apache.org/xalan-j/usagepatterns.html#debugging
- Xalan progress indication Vries, Michiel de
- Re: Xalan progress indication Bruno Verachten
- RE: Xalan progress indication Vries, Michiel de
- Re: Xalan progress indication Phil Friedman
- Re: Xalan progress indication Joseph Kesselman/CAM/Lotus
- Re: Xalan progress indication David Marston/Cambridge/IBM
