avoid using RulesRegistry.search() since it's slow

scrapinghub · Jan 10, 2023 · 3c6fdae · 3c6fdae
1 parent 7bd6783
commit 3c6fdae
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/scrapy_poet/page_input_providers.py b/scrapy_poet/page_input_providers.py
@@ -301,7 +301,8 @@ def provided_classes(self, cls):
         """If the item is in any of the ``to_return`` in the rules, then it can
         definitely provide by using the corresponding page object in ``use``.
         """
-        return isclass(cls) and self.registry.search(to_return=cls)
+        # avoid using ``web_poet.RulesRegistry.search()`` since it's O(N)
+        return isclass(cls) and self.registry._item_matchers.get(cls)
 
     def update_cache(self, request: Request, mapping: Dict[Type, Any]) -> None:
         if request not in self._cached_instances: