Fixed memory() and RET usage

src/core/sheerka/services/SheerkaSetsManager.py

@@ -59,10 +59,6 @@ class SheerkaSetsManager(BaseService):
 
         res = self.add_concept_to_set(context, concept, concept_set)
 
-        # update concept_set references
-        self.sheerka.services[SheerkaModifyConcept.NAME].update_references(context, concept_set)
-        self.concepts_in_set.delete(concept_set.id)
-
         return res
 
     def add_concept_to_set(self, context, concept, concept_set):
@@ -85,11 +81,21 @@ class SheerkaSetsManager(BaseService):
                 self.sheerka.new(BuiltinConcepts.CONCEPT_ALREADY_IN_SET, body=concept, concept_set=concept_set))
 
         self.sets.put(concept_set.id, concept.id)
+
+        # invalidate the cache of what contains concept_set
         self.concepts_in_set.delete(concept_set.id)
+
+        # update concept_set references
+        self.sheerka.services[SheerkaModifyConcept.NAME].update_references(context, concept_set)
+
         return self.sheerka.ret(self.NAME, True, self.sheerka.new(BuiltinConcepts.SUCCESS))
 
     def add_concepts_to_set(self, context, concepts, concept_set):
-        """Adding multiple concepts at the same time"""
+        """
+        Adding multiple concepts at the same time
+        ******** THIS METHOD IS FOR TEST ONLY *************
+        As it is not optimized. It needs to be rewritten in case of production usage
+        """
 
         context.log(f"Adding concepts {concepts} to set {concept_set}", who=self.NAME)
         ensure_concept(concept_set)