I figured out the what you mention. The part that confuses me is how to put the data from the xml file in a desired location. For example if I have the xml document:
...
<vehicle>
<id>1</id>
<lon>-128.553223</lon>
<lat>54.233123</lat>
</vehicle>
...
How does id, lon, lat initialize the variables int id, double lon, double lat?
You would have the callbacks in your visitor take care of it, but it's a bit of work the first time. Why not just use the property-tree code instead?
All the best,
David
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