cloud-fan commented on a change in pull request #31791:
URL: https://github.com/apache/spark/pull/31791#discussion_r608353136
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
##########
@@ -83,15 +85,94 @@ trait FunctionRegistry {
/** Clear all registered functions. */
def clear(): Unit
+}
- /** Create a copy of this registry with identical functions as this
registry. */
- override def clone(): FunctionRegistry = throw new
CloneNotSupportedException()
+object FunctionRegistryBase {
+
+ /**
+ * Return an expression info and a function builder for the function as
defined by
+ * T using the given name.
+ */
+ def build[T : ClassTag](name: String): (ExpressionInfo, Seq[Expression] =>
T) = {
Review comment:
You are right, I missed this part.
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