chenghuichen commented on code in PR #6419:
URL: https://github.com/apache/paimon/pull/6419#discussion_r2438049269
##########
paimon-python/pypaimon/read/push_down_utils.py:
##########
@@ -21,6 +21,50 @@
from pypaimon.common.predicate import Predicate
+def to_partition_predicate(input_predicate: 'Predicate', all_fields:
List[str], partition_keys: List[str]):
+ if not input_predicate or not partition_keys:
+ return None
+
+ predicates: list['Predicate'] = split_and(input_predicate)
+ predicates = [element for element in predicates if
_get_all_fields(element).issubset(partition_keys)]
+ new_predicate = Predicate(
+ method='and',
+ index=None,
+ field=None,
+ literals=predicates
+ )
+
+ part_to_index = {element: idx for idx, element in
enumerate(partition_keys)}
+ mapping: Dict[int, int] = {
+ i: part_to_index.get(all_fields[i], -1)
+ for i in range(len(all_fields))
+ }
+
+ return change_index(new_predicate, mapping)
+
+
+def split_and(input_predicate: 'Predicate'):
Review Comment:
Consider making `split_and` and `change_index` private — they’re not part of
push_down_utils’ public API.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
