I need to invoke EnumSet#nonOf or EnumSet#allOf with an unknown type of class.
@Override
public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext) {
final EnumSetOfAll annotation = parameterContext.getParameter().getAnnotation(EnumSetOfAll.class);
final Class<?> value = annotation.value();
if (!value.isEnum()) {
throw new ParameterResolutionException("value(" + value + ") is not an enum");
}
// How can I return the result of EnumSet#(all|none)Of invoked with value?
}
First, change the type of your annotation's value()
to Class<? extends Enum>
.
Now you can do:
final Class<? extends Enum> value = annotation.value();
Now this can be passed to allOf
and noneOf
:
EnumSet<?> set = EnumSet.allOf(value);