cloud-fan commented on a change in pull request #34473:
URL: https://github.com/apache/spark/pull/34473#discussion_r742112070
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
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@@ -297,6 +297,19 @@ class SimpleFunctionRegistry
extends SimpleFunctionRegistryBase[Expression]
with FunctionRegistry {
+ override def registerFunction(
+ name: FunctionIdentifier,
+ info: ExpressionInfo,
+ builder: FunctionBuilder): Unit = {
+ // We wrap all the functions to `RegisteredFunction`, so that during the
analysis,
+ // we can identify the functions among the expressions. It will get
replaced at
+ // runtime (currently by the optimizer) to the actual function.
+ def wrappedBuilder: FunctionBuilder = (e: Seq[Expression]) => {
+ RegisteredSimpleFunction(name, builder(e))
Review comment:
I would just call it `RegisteredFunction`
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