syun64 commented on code in PR #728:
URL: https://github.com/apache/iceberg-python/pull/728#discussion_r1597761797


##########
pyiceberg/table/__init__.py:
##########
@@ -340,6 +340,34 @@ def set_properties(self, properties: Properties = 
EMPTY_DICT, **kwargs: Any) ->
         updates = properties or kwargs
         return self._apply((SetPropertiesUpdate(updates=updates),))
 
+    def set_ref_snapshot(
+        self,
+        snapshot_id: int,
+        parent_snapshot_id: Optional[int],
+        ref_name: str,
+        type: str,
+        max_age_ref_ms: Optional[int] = None,
+        max_snapshot_age_ms: Optional[int] = None,
+        min_snapshots_to_keep: Optional[int] = None,
+    ) -> Transaction:
+        """Update a ref to a snapshot.
+
+        Returns:
+            The transaction with the set-snapshot-ref staged
+        """
+        updates = SetSnapshotRefUpdate(
+            snapshot_id=snapshot_id,
+            parent_snapshot_id=parent_snapshot_id,
+            ref_name=ref_name,
+            type=type,
+            max_age_ref_ms=max_age_ref_ms,
+            max_snapshot_age_ms=max_snapshot_age_ms,
+            min_snapshots_to_keep=min_snapshots_to_keep,
+        )
+
+        requirements = AssertRefSnapshotId(snapshot_id=parent_snapshot_id, 
ref="main")

Review Comment:
   Could we add 
[AssertTableUUID](https://github.com/apache/iceberg-python/blob/main/pyiceberg/table/__init__.py#L1010)
 table requirement as well?



##########
pyiceberg/table/__init__.py:
##########
@@ -340,6 +340,34 @@ def set_properties(self, properties: Properties = 
EMPTY_DICT, **kwargs: Any) ->
         updates = properties or kwargs
         return self._apply((SetPropertiesUpdate(updates=updates),))
 
+    def set_ref_snapshot(
+        self,
+        snapshot_id: int,
+        parent_snapshot_id: Optional[int],
+        ref_name: str,
+        type: str,
+        max_age_ref_ms: Optional[int] = None,
+        max_snapshot_age_ms: Optional[int] = None,
+        min_snapshots_to_keep: Optional[int] = None,
+    ) -> Transaction:
+        """Update a ref to a snapshot.
+
+        Returns:
+            The transaction with the set-snapshot-ref staged
+        """
+        updates = SetSnapshotRefUpdate(
+            snapshot_id=snapshot_id,
+            parent_snapshot_id=parent_snapshot_id,
+            ref_name=ref_name,

Review Comment:
   I don't think we are expecting `parent_snapshot_id` in 
[SetSnapshotRefUpdate](https://github.com/apache/iceberg-python/blob/main/pyiceberg/table/__init__.py#L618-L625)
 
   
   ```suggestion
               snapshot_id=snapshot_id,
               ref_name=ref_name,
   ```



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