Changed structure of cpl-query

src/cpl_query/enumerable/ordered_enumerable_abc.py

@@ -0,0 +1,43 @@
+from abc import abstractmethod
+from collections.abc import Callable
+from typing import Iterable
+
+from cpl_query.enumerable.enumerable_abc import EnumerableABC
+
+
+class OrderedEnumerableABC(EnumerableABC):
+
+    @abstractmethod
+    def __init__(self, _t: type, _func: Callable = None, _values: Iterable = None):
+        EnumerableABC.__init__(self, _t, _values)
+        self._funcs: list[Callable] = []
+        if _func is not None:
+            self._funcs.append(_func)
+
+    @abstractmethod
+    def then_by(self, func: Callable) -> 'OrderedEnumerableABC':
+        r"""Sorts OrderedList in ascending order by function
+
+        Parameter
+        ---------
+            func: :class:`Callable`
+            
+        Returns
+        -------
+            list of :class:`cpl_query.extension.OrderedEnumerableABC`
+        """
+        pass
+
+    @abstractmethod
+    def then_by_descending(self, func: Callable) -> 'OrderedEnumerableABC':
+        r"""Sorts OrderedList in descending order by function
+
+        Parameter
+        ---------
+            func: :class:`Callable`
+            
+        Returns
+        -------
+            list of :class:`cpl_query.extension.OrderedEnumerableABC`
+        """
+        pass