chore(hack?): move to private property

Author: Alc-Alc

advanced_alchemy/filters.py

@@ -7,7 +7,7 @@
 from dataclasses import dataclass
 from datetime import datetime  # noqa: TCH003
 from operator import attrgetter
-from typing import TYPE_CHECKING, Any, ClassVar, Generic, Literal, TypeVar, cast
+from typing import TYPE_CHECKING, Any, Generic, Literal, TypeVar, cast
 
 from sqlalchemy import BinaryExpression, and_, any_, or_, text
 
@@ -293,7 +293,9 @@ class SearchFilter(StatementFilter):
     ignore_case: bool | None = False
     """Should the search be case insensitive."""
 
-    _operator: ClassVar[Callable[..., ColumnElement[bool]]] = or_
+    @property
+    def _operator(self) -> Callable[..., ColumnElement[bool]]:
+        return or_
 
     @property
     def _func(self) -> attrgetter[Callable[[str], BinaryExpression[bool]]]:
@@ -333,7 +335,9 @@ def append_to_lambda_statement(
 class NotInSearchFilter(SearchFilter):
     """Data required to construct a ``WHERE field_name NOT LIKE '%' || :value || '%'`` clause."""
 
-    _operator: ClassVar[Callable[..., ColumnElement[bool]]] = and_
+    @property
+    def _operator(self) -> Callable[..., ColumnElement[bool]]:
+        return and_
 
     @property
     def _func(self) -> attrgetter[Callable[[str], BinaryExpression[bool]]]: