auroflow commented on code in PR #28843:
URL: https://github.com/apache/flink/pull/28843#discussion_r3701029336
##########
flink-python/pyflink/dataframe/datatype.py:
##########
@@ -49,7 +76,55 @@ def __eq__(self, other: object) -> bool:
@PublicEvolving()
def __hash__(self) -> int:
- return hash(str(self._table_data_type))
+ return hash(repr(self._table_data_type))
+
+ @PublicEvolving()
+ def not_null(self) -> "DataType":
+ """
+ Return a non-nullable version of this data type.
+
+ .. versionadded:: 2.4.0
+ """
+ return DataType(self._table_data_type.not_null())
+
+ @PublicEvolving()
+ def nullable(self) -> "DataType":
+ """
+ Return a nullable version of this data type.
+
+ .. versionadded:: 2.4.0
+ """
+ return DataType(self._table_data_type.nullable())
+
+ @classmethod
+ @PublicEvolving()
+ def int8(cls) -> "DataType":
Review Comment:
Created at
[FLINK-40300](https://issues.apache.org/jira/projects/FLINK/issues/FLINK-40300).
I'll be working on a PR soon.
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