[dataimport, migration] silence find_entities / find_one_entity warning

Deprecate associated methods to unify the API

dataimport.py

@@ -620,11 +620,13 @@ class RQLObjectStore(ObjectStore):
         self.rql('SET X %s Y WHERE X eid %%(x)s, Y eid %%(y)s' % rtype,
                  {'x': int(eid_from), 'y': int(eid_to)})
 
+    @deprecated("[3.19] use session.find(*args, **kwargs).entities() instead")
     def find_entities(self, *args, **kwargs):
-        return self.session.find_entities(*args, **kwargs)
+        return self.session.find(*args, **kwargs).entities()
 
+    @deprecated("[3.19] use session.find(*args, **kwargs).one() instead")
     def find_one_entity(self, *args, **kwargs):
-        return self.session.find_one_entity(*args, **kwargs)
+        return self.session.find(*args, **kwargs).one()
 
 # the import controller ########################################################
 

server/migractions.py

@@ -1342,17 +1342,23 @@ class ServerMigrationHelper(MigrationHelper):
             self.commit()
         return entity
 
+    def cmd_find(self, etype, **kwargs):
+        """find entities of the given type and attribute values"""
+        return self.cnx.find(etype, **kwargs)
+
+    @deprecated("[3.19] use find(*args, **kwargs).entities() instead")
     def cmd_find_entities(self, etype, **kwargs):
         """find entities of the given type and attribute values"""
-        return self.cnx.find_entities(etype, **kwargs)
+        return self.cnx.find(etype, **kwargs).entities()
 
+    @deprecated("[3.19] use find(*args, **kwargs).one() instead")
     def cmd_find_one_entity(self, etype, **kwargs):
         """find one entity of the given type and attribute values.
 
         raise :exc:`cubicweb.req.FindEntityError` if can not return one and only
         one entity.
         """
-        return self.cnx.find_one_entity(etype, **kwargs)
+        return self.cnx.find(etype, **kwargs).one()
 
     def cmd_update_etype_fti_weight(self, etype, weight):
         if self.repo.system_source.dbdriver == 'postgres':

sobjects/cwxmlparser.py

@@ -467,7 +467,7 @@ class CWEntityXMLActionLink(CWEntityXMLActionCopy):
             self._clear_relation((ttype,))
 
     def _find_entities(self, item, kwargs):
-        return tuple(self._cw.find_entities(item['cwtype'], **kwargs))
+        return tuple(self._cw.find(item['cwtype'], **kwargs).entities())
 
 
 class CWEntityXMLActionLinkInState(CWEntityXMLActionLink):