cloud-fan commented on a change in pull request #32801:
URL: https://github.com/apache/spark/pull/32801#discussion_r727820746
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/misc.scala
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@@ -301,3 +306,105 @@ case class CurrentUser() extends LeafExpression with
Unevaluable {
override def prettyName: String = "current_user"
final override val nodePatterns: Seq[TreePattern] = Seq(CURRENT_LIKE)
}
+
+/**
+ * The concrete implementation for AES encryption and decryption.
+ */
+object AesImpl {
Review comment:
Can we write it in java? e.g. `class ExpressionImplUtils` under
`org.apache.spark.sql.catalyst.expressions`, and we can add more static methods
in the future when we add new expressions.
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