Add example & prototype of factory aggregate

examples/providers/factory_aggregate/example.py

@@ -0,0 +1,27 @@
+"""`FactoryAggregate` providers example."""
+
+import sys
+
+from dependency_injector.providers import Factory
+
+from prototype import FactoryAggregate
+from games import Chess, Checkers, Ludo
+
+
+game_factory = FactoryAggregate(chess=Factory(Chess),
+                                checkers=Factory(Checkers),
+                                ludo=Factory(Ludo))
+
+if __name__ == '__main__':
+    game_type = sys.argv[1].lower()
+    selected_game = game_factory.create(game_type)
+    selected_game.play()
+
+    # $ python example.py chess
+    # Playing chess
+
+    # $ python example.py checkers
+    # Playing checkers
+
+    # $ python example.py ludo
+    # Playing ludo

examples/providers/factory_aggregate/games.py

@@ -0,0 +1,21 @@
+"""Example module."""
+
+
+class Game(object):
+    """Base game class."""
+
+    def play(self):
+        """Play game."""
+        print('Playing {0}'.format(self.__class__.__name__.lower()))
+
+
+class Chess(Game):
+    """Chess game."""
+
+
+class Checkers(Game):
+    """Checkers game."""
+
+
+class Ludo(Game):
+    """Ludo game."""

examples/providers/factory_aggregate/prototype.py

@@ -0,0 +1,24 @@
+"""FactoryAggregate provider prototype."""
+
+
+class FactoryAggregate(object):
+    """FactoryAggregate provider prototype."""
+
+    def __init__(self, **factories):
+        """Initializer."""
+        self._factories = factories
+
+    def __getattr__(self, factory_name):
+        """Return factory."""
+        if factory_name not in self._factories:
+            raise AttributeError('There is no such factory')
+        return self._factories[factory_name]
+
+    def create(self, factory_name, *args, **kwargs):
+        """Create object."""
+        if factory_name not in self._factories:
+            raise AttributeError('There is no such factory')
+
+        factory = self._factories[factory_name]
+
+        return factory(*args, **kwargs)