From 51c0cff6970c3f94f28403978c13c302a1779396 Mon Sep 17 00:00:00 2001
From: zhsu <suzhihong.szh@antgroup.com>
Date: Wed, 3 Jun 2026 19:41:07 +0800
Subject: [PATCH 1/2] feat(store): expose public root_path and persistent
 properties on StoreBackend/ObjectStore

---
 mplang/runtime/object_store.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/mplang/runtime/object_store.py b/mplang/runtime/object_store.py
index 3d10579e..321ae600 100644
--- a/mplang/runtime/object_store.py
+++ b/mplang/runtime/object_store.py
@@ -55,6 +55,16 @@ class StoreBackend(ABC):
     def __init__(self, root_path: str | None = None) -> None:
         self._root_path: str | None = root_path
 
+    @property
+    def root_path(self) -> str | None:
+        """Base path for all storage operations.
+
+        Returns the configured root directory (local path, S3 prefix, etc.)
+        under which all keys are resolved.  May be ``None`` for backends
+        that do not use a root path (e.g. in-memory).
+        """
+        return self._root_path
+
     @property
     @abstractmethod
     def scheme(self) -> str:
@@ -356,6 +366,11 @@ def __init__(self, persistent: StoreBackend | None = None) -> None:
                 )
             self._backends[persistent.scheme] = persistent
 
+    @property
+    def persistent(self) -> StoreBackend | None:
+        """The persistent storage backend, or ``None`` if not configured."""
+        return self._persistent
+
     # ------------------------------------------------------------------
     # URI helpers
     # ------------------------------------------------------------------

From 5288988fddda3e8467269a8b42c6b96871a8174a Mon Sep 17 00:00:00 2001
From: zhsu <suzhihong.szh@antgroup.com>
Date: Thu, 4 Jun 2026 20:29:18 +0800
Subject: [PATCH 2/2] chore: remove duplicate persistent property in
 ObjectStore

Addresses PR #413 review: the `persistent` property was defined twice;
removed the redundant earlier definition and kept the one in the
Convenience section.
---
 mplang/runtime/object_store.py | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/mplang/runtime/object_store.py b/mplang/runtime/object_store.py
index 321ae600..5630a139 100644
--- a/mplang/runtime/object_store.py
+++ b/mplang/runtime/object_store.py
@@ -366,11 +366,6 @@ def __init__(self, persistent: StoreBackend | None = None) -> None:
                 )
             self._backends[persistent.scheme] = persistent
 
-    @property
-    def persistent(self) -> StoreBackend | None:
-        """The persistent storage backend, or ``None`` if not configured."""
-        return self._persistent
-
     # ------------------------------------------------------------------
     # URI helpers
     # ------------------------------------------------------------------