Jörn Kottmann wrote:
Is that the correct generification?
Class? extends AbstractCas getRequiredCasInterface();
Implementing classes can then specify the concrete return
type.
For example:
ClassJCas JCasAnnotator_ImplBase.getRequiredCasInterface()
ClassCAS CasAnnotator_ImplBase.getRequiredCasInterface()
I tried:
public static void tgrci(AnalysisComponent ac) {
ClassJCas x = ac.getRequiredCasInterface();
}
but it doesn't work, gives error:
// error, cannot convert from Classcapture#4-of ? extends AbstractCas
to ClassJCas
This is with the interface AnalysisComponent defining
getRequiredCasInterface as:
Class? extends AbstractCas getRequiredCasInterface();
This works:
public static void tgrci(AnalysisComponent ac) {
Class? extends AbstractCas x = ac.getRequiredCasInterface();
}
and this works too:
public static void tgrci(AnalysisComponent ac) {
ClassJCas x = ((JCasAnnotator_ImplBase)ac).getRequiredCasInterface();
}
So, I think we have the correct generification in the interface
AnalysisComponent, of return ? extends AbstractCAS.
-Marshall.
Jörn
