Lee-W commented on code in PR #60204:
URL: https://github.com/apache/airflow/pull/60204#discussion_r2690757833
##########
airflow-core/src/airflow/serialization/helpers.py:
##########
@@ -133,3 +134,29 @@ def find_registered_custom_timetable(importable_string:
str) -> type[CoreTimetab
def is_core_timetable_import_path(importable_string: str) -> bool:
"""Whether an importable string points to a core timetable class."""
return importable_string.startswith("airflow.timetables.")
+
+
+class PartitionMapperNotFound(ValueError):
+ """Raise when a PartitionMapper cannot be found."""
+
+ def __init__(self, type_string: str) -> None:
+ self.type_string = type_string
+
+ def __str__(self) -> str:
+ return (
+ f"PartitionMapper class {self.type_string!r} could not be imported
or "
+ "you have a top level database access that disrupted the session. "
+ "Please check the airflow best practices documentation."
+ )
+
+
+def is_core_partition_mapper_import_path(importable_string: str) -> bool:
+ """Whether an importable string points to a core partition mapper class."""
+ return importable_string.startswith("airflow.timetables.")
Review Comment:
I also feel it's better this way. `airflow.partition_mapper` maybe?
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