Short question: have you registered your valuetype factory on both sides?
Cheers,
Karel
--
Karel Gardas [EMAIL PROTECTED]
ObjectSecurity Ltd. http://www.objectsecurity.com
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On Tue, 29 Nov 2005, Bob Gunion wrote:
This may have more to do with my limited understanding of valuetypes than with
mico, but I've been banging my head against this for a couple of days and need
some more expert input (read: I'm almost out of aspirin). I ran this test on
three development environments, all with the same results:
- micoo 2.3.12RC2, gcc 3.4.4, RedHat Linux 9
- mico 2.3.7, gcc 3.2.1, RedHat Linux 7
- mico 2.3.11, VC++7, Win2k
I've attached my test code, but here's a summary of what's happening:
Using this idl:
module test {
valuetype testvalue {
public long ival;
long foo();
};
interface testinterface {
testvalue getValue();
any getAny();
long dofoo();
};
};
The server side is straightforward. I'm trying to do this on the client side:
(Get a CORBA::Object_var obj..)
testinterface_var intfc = testinterface::_narrow(obj);
if (CORBA::is_nil(intfc)) {
cerr << argv[0] << ": can't narrow testinterface" << endl;
return -1;
}
CORBA::Any_var any = intfc->getAny();
testvalue_impl * pCValue = new testvalue_impl(999);
test::testvalue_var tv = pCValue;
if (any >>= tv) { <<<<<<<<<<<<<<<<<<<<< ERROR!
printf("%s: Extracted the any. ival = %d, foo = %d\n",
argv[0],
pCValue->ival(),
pCValue->foo());
} else {
cerr << argv[0] << ": Failed to extract the any" << endl;
return -1;
}
return 0;
When I try to extract the testvalue from the any, I get a CORBA::Marshal
exception. I've tried using DynAny to parse the any, and that works but is
very clumsy. So I know the correct information is in the any but I can't
extract it.
Using gdb, I got a backtrace of the error. Everything looks fine up to this
point in the c++ code generated from idl:
::CORBA::Boolean _Marshaller_testvalue::demarshal( ::CORBA::DataDecoder &dc,
StaticValueType v ) const
{
::CORBA::ValueBase* vb = NULL;
if (!::CORBA::ValueBase::_demarshal (dc, vb, "IDL:testvalue:1.0")) { <<<<<<
ERROR!
return FALSE;
}
::CORBA::remove_ref (*(_MICO_T *)v);
*(_MICO_T *)v = ::testvalue::_downcast (vb);
if (vb && !*(_MICO_T *)v) {
::CORBA::remove_ref (vb);
return FALSE;
}
return TRUE;
}
The CORBA::ValueBase::_demarshal function takes a const std::string reference
as the third parameter. But according to gdb, the third parameter becomes a
reference to a null pointer. Is gdb lying to me, or is something else
happening here? I admit I have minimal experience with gdb, but I also tried
creating my own test function like this:
long strtestfn(const std::string& str) {
printf("In strtestfn: %s\n", str.c_str());
return 42;
}
int main(int argc, char * argv[]) {
long result = strtestfn("Hello");
}
.. and this worked without problems. So I'm stumped. Please help!
(Note: Here's the big picture: I'd like to deliver valuetypes using the event
service, so I could have all the data passed like a struct, and in rare cases
also have functions I could call to get more info from the server. Maybe I
could accomplish the same thing by having an object reference in my struct, and
only call methods on that object in those rare cases. Thoughts?)
Thanks, and keep up the great work on mico!
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