Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/10527#discussion_r51175633
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/misc.scala
---
@@ -453,3 +455,131 @@ case class Murmur3Hash(children: Seq[Expression],
seed: Int) extends Expression
}
}
}
+
+/**
+ * A function that encrypts input using AES. Key lengths of 128, 192 or
256 bits can be used.
+ * 192 and 256 bits keys can be used if Java Cryptography Extension (JCE)
Unlimited Strength
+ * Jurisdiction Policy Files are installed. If either argument is NULL or
the key length is
+ * not one of the permitted values, the return value is NULL.
+ */
+@ExpressionDescription(
+ usage =
+ """_FUNC_(input, key) - Encrypts input using AES. Key lengths of 128,
192 or 256 bits can
+ be used. 192 and 256 bits keys can be used if Java Cryptography Extension
(JCE) Unlimited Strength
+ Jurisdiction Policy Files are installed. If either argument is NULL or
the key length is not one
+ of the permitted values, the return value is NULL.""",
+ extended = """> SELECT Base64(_FUNC_('ABC', '1234567890123456'));
--- End diff --
we should follow the style of other classes in this file, i.e. use double
quotation marks and `\n`
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