Github user sunjincheng121 commented on a diff in the pull request: https://github.com/apache/flink/pull/2653#discussion_r86649434 --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/TableEnvironment.scala --- @@ -152,21 +153,40 @@ abstract class TableEnvironment(val config: TableConfig) { protected def getBuiltInRuleSet: RuleSet /** - * Registers a [[UserDefinedFunction]] under a unique name. Replaces already existing + * Registers a [[ScalarFunction]] under a unique name. Replaces already existing * user-defined functions under this name. */ - def registerFunction(name: String, function: UserDefinedFunction): Unit = { - function match { - case sf: ScalarFunction => - // register in Table API - functionCatalog.registerFunction(name, function.getClass) + def registerFunction(name: String, function: ScalarFunction): Unit = { + // register in Table API + functionCatalog.registerFunction(name, function.getClass) - // register in SQL API - functionCatalog.registerSqlFunction(sf.getSqlFunction(name, typeFactory)) + // register in SQL API + functionCatalog.registerSqlFunction(function.getSqlFunction(name, typeFactory)) --- End diff -- "At here, function.getSqlFunction (name, typeFactory)" the "name" is user input,but at ScalarFunctionCall I see "scalarFunction.getSqlFunction (scalarFunction.toString, typeFactory)", which may not be we expect Right?
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