getViewIterator in CASImpl is written with the signature:
Iterator<CAS> getViewIterator()
If you are working with things needing CASImpl objects, you would write:
Iterator<CAS> s = aCas.getViewIterator();
while (s.hasNext()) {
CASImpl ci = (CASImpl) s.next();
... code using ci...
}
If we changed the signature to:
Iterator<T extends CAS> getViewIterator()
then you would write:
Iterator<CASImpl> s = aCas.getViewIterator(); // cast done inside the
support code, not here
while (s.hasNext()) {
CASImpl ci = s.next(); // works OK without casting
... code using ci...
}
Would it be better to have that form of the signature?
-Marshall
