TfType
UsdMayaAdaptor::GetUsdType() const
{
if (!*this) {
return TfType();
}
MObject object = _handle.object();
MFnDependencyNode depNode(object);
// The adaptor type mapping might be registered externally in a prim writer
// plugin. This simply pokes the prim writer registry to load the prim
// writer plugin in order to pull in the adaptor mapping.
UsdMayaPrimWriterRegistry::Find(depNode.typeName().asChar());
TfRegistryManager::GetInstance().SubscribeTo<UsdMayaAdaptor>();
const auto iter = _schemaLookup.find(depNode.typeName().asChar());
if (iter != _schemaLookup.end()) {
return iter->second;
}
else {
return TfType();
}
}
TfType
SdfPropertySpec::GetValueType() const
{
// The value type of an attribute is specified by the user when it is
// constructed, while the value type of a relationship is always SdfPath.
// Normally, one would use virtual functions to encapsulate this difference;
// however we don't want to use virtuals as SdfSpec and its subclasses are
// intended to be simple value types that are merely wrappers around
// a layer. So, we have this hacky 'virtual' function.
switch (GetSpecType()) {
case SdfSpecTypeAttribute:
return GetSchema().FindType(_GetAttributeValueTypeName()).GetType();
case SdfSpecTypeRelationship: {
static const TfType type = TfType::Find<SdfPath>();
return type;
}
default:
TF_CODING_ERROR("Unrecognized subclass of SdfPropertySpec on <%s>",
GetPath().GetText());
return TfType();
}
}
