In starting to make the samples a bit better, I tackled ObtainingDatagraphFromXML and added some infrastructure to allow making the other samples clearer [1]. I'd welcome any comments on this, and any offers of help to do similar things to the other samples.
Regards, Kelvin. [1] http://svn.apache.org/viewvc?view=rev&rev=546443<http://svn.apache.org/viewvc?view=rev&rev=546443>
