[m2e-dev] hasDelta, Scanner when plugin checks for stale already?

[Pino Silvaggio <pino.silvaggio@xxxxxxxxx>]

I am trying to port my xmlbeans connector directly into the codehaus 
xmlbeans plugin
using the build-api.

However, the plugin already looks for stale files before it builds.

My concern is, the buildContext hasDelta or the Scanner should still be used
in case the stale flag is false, as there still might be a chance there 
is a delta.
I guess, we shouldn't assume?

Anyways, my question, is there a way to check if the buildContext is the 
default
which always returns true for deltas or should I just use instanceof to 
verify this?

My logic would be, if it is not stale and it's not the default 
buildContext then use
the Scanner otherwise don't use the buildContext as it will always 
return true.

We could remove the check for stale but I'd have to discuss this...