mihailoale-db commented on code in PR #53036: URL: https://github.com/apache/spark/pull/53036#discussion_r2527581785
########## sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/SubqueryExpressionInLambdaOrHigherOrderFunctionValidator.scala: ########## @@ -0,0 +1,43 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.spark.sql.catalyst.analysis + +import org.apache.spark.sql.catalyst.analysis.ResolveLambdaVariables.conf +import org.apache.spark.sql.catalyst.expressions.Expression +import org.apache.spark.sql.catalyst.trees.TreePattern.PLAN_EXPRESSION +import org.apache.spark.sql.errors.QueryCompilationErrors +import org.apache.spark.sql.internal.SQLConf + +/** + * Object used to validate whether there are subquery expressions in [[LambdaFunction]] or + * [[HigherOrderFunction]]. + */ +object SubqueryExpressionInLambdaOrHigherOrderFunctionValidator { + + /** + * SPARK-47509: There is a correctness bug when subquery expressions appear within lambdas or + * higher-order functions. Here we check for that case and return an error if the corresponding + * configuration indicates to do so. + */ + def apply(expression: Expression): Unit = { Review Comment: it's `apply` for almost every other singleton object because we invoke it as `Object` instead of `Object.validate` or `Object. check` which is nicer IMO. If you have a strong preference we can rename it. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
