.

wcfs/zodb.go

@@ -359,20 +359,35 @@ func (conn *Connection) newGhost(pyclass pickle.Class, oid zodb.Oid) PyObject {
 	pyobj := &pyObject{
 		object:  object{jar: conn, oid: oid, serial: 0},
 		pyclass: pyclass,
-		//instance: nil,
 	}
 
 	// switch on pyclass and transform e.g. "zodb.BTree.Bucket" -> *ZBucket
 	classNew := classTab[pyclass.Module + "." + pyclass.Name]
-	if classNew == nil {
-		return pyobj	// XXX or return error here?
+	var instance PyObject
+	if classNew != nil {
+		instance = classNew(pyobj)
+	} else {
+		instance = &dummyPyInstance{pyObject: pyobj}
 	}
 
-	obj := classNew(pyobj)
-	pyobj.instance = obj
-	return obj
+	pyobj.instance = instance
+	return instance
+}
+
+// dummyPyInstance is used for python classes that were not registered.
+type dummyPyInstance struct {
+	*pyObject
+	pystate interface{}
 }
 
+func (d *dummyPyInstance) DropState() {
+	d.pystate = nil
+}
+
+func (d *dummyPyInstance) PySetState(pystate interface{}) error	{
+	d.pystate = pystate
+	return nil
+}
 
 
 // ----------------------------------------