[GitHub] [spark] zhengruifeng commented on a diff in pull request #39035: [SPARK-41438][CONNECT][PYTHON] Implement `DataFrame.colRegex`

[GitBox <gi...@apache.org>]

zhengruifeng commented on code in PR #39035:
URL: https://github.com/apache/spark/pull/39035#discussion_r1047912193


##########
python/pyspark/sql/connect/column.py:
##########
@@ -452,6 +452,25 @@ def __repr__(self) -> str:
             return f"{self._name}({', '.join([str(arg) for arg in self._args])})"
 
 
+class UnresolvedRegex(Expression):
+    def __init__(
+        self,
+        col_name: str,
+    ) -> None:
+        super().__init__()
+
+        assert isinstance(col_name, str)
+        self.col_name = col_name
+
+    def to_plan(self, session: "SparkConnectClient") -> proto.Expression:
+        expr = proto.Expression()
+        expr.unresolved_regex.col_name = self.col_name
+        return expr
+
+    def __repr__(self) -> str:
+        return f"{self.col_name}"

Review Comment:
   ```suggestion
           return f"UnresolvedRegex({self.col_name})"
   ```



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