Re: [xmlvm-users] NSObject dispatchObject

[Panayotis K. <pan...@pa...>]

On May 20, 2011, at 9:56 AM, Arno Puder wrote:
> 
> hmm. Do you want to be able to call arbitrary *methods* or a certain 
> method on arbitrary *objects*? For the former you need reflected, for 
> the latter not. Actually, take a look at [DispatcherObject run] (in 
> NSObject.m) to get an idea how you can invoke a Java method from C code.


certain method, arbitrary objects.
I did, I actually found these two parts:
java_lang_reflect_Method* method = (*(JAVA_OBJECT (*)(JAVA_OBJECT, JAVA_OBJECT, JAVA_OBJECT)) targetClass->tib->vtable[XMLVM_VTABLE_IDX_java_lang_Class_getMethod___java_lang_String_java_lang_Class_1ARRAY])(targetClass, methodName, paramTypes);
and
 (*(JAVA_OBJECT (*)(JAVA_OBJECT, JAVA_OBJECT, JAVA_OBJECT)) method->tib->vtable[XMLVM_VTABLE_IDX_java_lang_reflect_Method_invoke___java_lang_Object_java_lang_Object_1ARRAY])(method, target, params);
but I am a bit confused how to decode it.
Moreover it seems that they use reflection - that's why I asked.


>> And a last probably silly question:
>> How do I convert an ObjC String to java_lang_String ?
>> (and for completeness and back?)
> 
> NSString* toNSString(JAVA_OBJECT o)
> JAVA_OBJECT toJavaString(NSString* str)
> 
> both defined in NSString.m
> 

Oh , I missed that part - I was looking under java_lang_String :)