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[SPARK-48594][PYTHON][CONNECT] Rename parent field to child in ColumnAlias #46949

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[SPARK-48594][PYTHON][CONNECT] Rename parent field to child in ColumnAlias #46949

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10 changes: 5 additions & 5 deletions python/pyspark/sql/connect/expressions.py
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Original file line number Diff line number Diff line change
Expand Up @@ -153,18 +153,18 @@ def __repr__(self) -> str:


class ColumnAlias(Expression):
def __init__(self, parent: Expression, alias: Sequence[str], metadata: Any):
def __init__(self, child: Expression, alias: Sequence[str], metadata: Any):
super().__init__()

self._alias = alias
self._metadata = metadata
self._parent = parent
self._child = child

def to_plan(self, session: "SparkConnectClient") -> "proto.Expression":
if len(self._alias) == 1:
exp = proto.Expression()
exp.alias.name.append(self._alias[0])
exp.alias.expr.CopyFrom(self._parent.to_plan(session))
exp.alias.expr.CopyFrom(self._child.to_plan(session))

if self._metadata:
exp.alias.metadata = json.dumps(self._metadata)
Expand All @@ -177,11 +177,11 @@ def to_plan(self, session: "SparkConnectClient") -> "proto.Expression":
)
exp = proto.Expression()
exp.alias.name.extend(self._alias)
exp.alias.expr.CopyFrom(self._parent.to_plan(session))
exp.alias.expr.CopyFrom(self._child.to_plan(session))
return exp

def __repr__(self) -> str:
return f"{self._parent} AS {','.join(self._alias)}"
return f"{self._child} AS {','.join(self._alias)}"


class LiteralExpression(Expression):
Expand Down