1 files changed, 15 insertions, 1 deletions
diff --git a/bsfs/graph/ac/base.py b/bsfs/graph/ac/base.py
index 79b09e5..0b9f988 100644
--- a/bsfs/graph/ac/base.py
+++ b/bsfs/graph/ac/base.py
@@ -12,7 +12,7 @@ import typing
 from bsfs import schema
 from bsfs.query import ast
 from bsfs.triple_store import TripleStoreBase
-from bsfs.utils import URI
+from bsfs.utils import URI, typename
 
 # exports
 __all__: typing.Sequence[str] = (
@@ -44,6 +44,20 @@ class AccessControlBase(abc.ABC):
         self._backend = backend
         self._user = URI(user)
 
+    def __str__(self) -> str:
+        return f'{typename(self)}({self._user})'
+
+    def __repr__(self) -> str:
+        return f'{typename(self)}({self._user})'
+
+    def __eq__(self, other: typing.Any) -> bool:
+        return isinstance(other, type(self)) \
+           and self._backend == other._backend \
+           and self._user == other._user
+
+    def __hash__(self) -> int:
+        return hash((type(self), self._backend, self._user))
+
     @abc.abstractmethod
     def is_protected_predicate(self, pred: schema.Predicate) -> bool:
         """Return True if a predicate cannot be modified manually."""