dongjoon-hyun commented on code in PR #57759:
URL: https://github.com/apache/spark/pull/57759#discussion_r3714476298
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sql/api/src/main/scala/org/apache/spark/sql/Column.scala:
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@@ -30,11 +30,17 @@ import org.apache.spark.sql.internal.{ColumnNode,
TableValuedFunctionArgument}
import org.apache.spark.sql.types._
import org.apache.spark.util.ArrayImplicits._
-private[spark] object Column {
+/**
+ * The companion object is public so that extension developers can reference
the `Column` type as
+ * a value, which is what makes the `Column(expression)` factory provided by
+ * `org.apache.spark.sql.classic.ClassicConversions.ColumnConstructorExt`
usable outside of the
Review Comment:
This new documentation might be misleading to the `Spark Connect` users
because `org.apache.spark.sql.classic.*` is a classic-specific API.
When a `Spark Connect` user traverses API doc, he/she reaches this `object
Column` doc and will see this. Can we revise this doc into more nuetural way?
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