// Get the value of the OMObjectVector at position index.
AAFRESULT STDMETHODCALLTYPE ImplAAFRefArrayValue::GetElementAt(
aafUInt32 index,
ImplAAFPropertyValue** ppPropertyValue) const
{
AAFRESULT result = AAFRESULT_SUCCESS;
if (NULL == ppPropertyValue)
return AAFRESULT_NULL_PARAM;
*ppPropertyValue = NULL;
ImplAAFStorableSP pObject;
result = GetObjectAt(index, &pObject);
if (AAFRESULT_FAILED(result))
return result;
ImplAAFTypeDefObjectRef *pElementType = GetElementType();
ASSERTU(NULL != pElementType);
if (NULL == pElementType)
return AAFRESULT_INVALID_OBJ;
result = pElementType->CreateValue((ImplAAFStorable *)pObject, ppPropertyValue);
if (AAFRESULT_FAILED(result))
return result;
return result;
}
HRESULT STDMETHODCALLTYPE
CAAFTypeDefObjectRef::CreateValue (IUnknown * pObj,
IAAFPropertyValue ** ppPropVal)
{
HRESULT hr;
ImplAAFTypeDefObjectRef * ptr;
ImplAAFRoot * pO;
pO = GetRepObject ();
assert (pO);
ptr = static_cast<ImplAAFTypeDefObjectRef*> (pO);
assert (ptr);
//
// set up for pObj
//
ImplAAFRoot * internalpObj = NULL;
if (pObj)
{
HRESULT hStat;
IAAFRoot * iObj;
ImplAAFRoot *arg;
hStat = pObj->QueryInterface (IID_IAAFRoot, (void **)&iObj);
if (FAILED(hStat))
{
// If input IUnknown argument MUST supprt our private IAAFRoot interface.
// If it does not than the argument is not one of our implementation objects!
assert(E_NOINTERFACE == hStat);
if (E_NOINTERFACE == hStat)
return AAFRESULT_INVALID_PARAM;
else
return hStat;
}
assert (iObj);
hStat = iObj->GetImplRep((void **)&arg);
assert (SUCCEEDED (hStat));
iObj->Release(); // we are through with this interface pointer.
internalpObj = static_cast<ImplAAFRoot*>(arg);
assert (internalpObj);
}
//
// set up for ppPropVal
//
ImplAAFPropertyValue * internalppPropVal = NULL;
ImplAAFPropertyValue ** pinternalppPropVal = NULL;
if (ppPropVal)
{
pinternalppPropVal = &internalppPropVal;
}
try
{
hr = ptr->CreateValue
(internalpObj,
pinternalppPropVal);
}
catch (OMException& e)
{
// OMExceptions should be handled by the impl code. However, if an
// unhandled OMException occurs, control reaches here. We must not
// allow the unhandled exception to reach the client code, so we
// turn it into a failure status code.
//
// If the OMException contains an HRESULT, it is returned to the
// client, if not, AAFRESULT_UHANDLED_EXCEPTION is returned.
//
hr = OMExceptionToResult(e, AAFRESULT_UNHANDLED_EXCEPTION);
}
catch (OMAssertionViolation &)
{
// Control reaches here if there is a programming error in the
// impl code that was detected by an assertion violation.
// We must not allow the assertion to reach the client code so
// here we turn it into a failure status code.
//
hr = AAFRESULT_ASSERTION_VIOLATION;
}
catch (...)
{
// We CANNOT throw an exception out of a COM interface method!
// Return a reasonable exception code.
//
hr = AAFRESULT_UNEXPECTED_EXCEPTION;
}
//
// no cleanup necessary for pObj
//
//
// cleanup for ppPropVal
//
if (SUCCEEDED(hr))
{
IUnknown *pUnknown;
HRESULT hStat;
if (internalppPropVal)
{
pUnknown = static_cast<IUnknown *> (internalppPropVal->GetContainer());
hStat = pUnknown->QueryInterface(IID_IAAFPropertyValue, (void **)ppPropVal);
assert (SUCCEEDED (hStat));
//pUnknown->Release();
internalppPropVal->ReleaseReference(); // We are through with this pointer.
}
}
return hr;
}