The problem can be easily reproduced using this: > MethodType type = MethodType.methodType(Constructor.class, > Class[].class); > MethodHandle mh = MethodHandles.lookup().findVirtual(Class.class, > "getDeclaredConstructor", type); > MethodType target = MethodType.methodType(Object.class, Object.class, > Object.class); > mh = mh.asType(target); > mh.invokeWithArguments(Class.class,new Class[0]);
can someone tell me the mistake? bye Jochen Am 07.02.2012 17:04, schrieb Jochen Theodorou: > Hi all, > > maybe someone can explain to me why method handles behave this way in my > case. > > Bascially I have a handle for Class#getDeclaredConstructor(Class...) I > created via unreflect. > > http://docs.oracle.com/javase/7/docs/api/java/lang/Class.html#getDeclaredConstructor%28java.lang.Class...%29 > > this handle is then created as a AdapterMethodHandle$AsVargsCollector. > My targetType is Object(Object,Object) and the arguments to the call are > the Class, and an empty Class[]. So the next steps are asType with the > target type, adding a guard with catch, then my guards for the arguments > and last I do an invokeWithArguments. > > What I get now is a ClassCastException with the message required class > java.lang.Class but encountered class [Ljava.lang.Class; > > The guards are unrelated to the problem, since it happens without them > as well. > > Now can anyone explain me why I get that exception? It doesn't really > make sense to me atm. > > bye Jochen > -- Jochen "blackdrag" Theodorou - Groovy Project Tech Lead blog: http://blackdragsview.blogspot.com/ german groovy discussion newsgroup: de.comp.lang.misc For Groovy programming sources visit http://groovy-lang.org _______________________________________________ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
