| /* |
| * 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.hive |
| |
| import org.apache.spark.sql.CarbonDatasourceHadoopRelation |
| import org.apache.spark.sql.catalyst.expressions.{Exists, In, ListQuery, ScalarSubquery} |
| import org.apache.spark.sql.catalyst.plans.logical.{Filter, LogicalPlan} |
| import org.apache.spark.sql.execution.datasources.LogicalRelation |
| |
| object CarbonOptimizerUtil { |
| def transformForScalarSubQuery(plan: LogicalPlan): LogicalPlan = { |
| // In case scalar subquery add flag in relation to skip the decoder plan in optimizer rule, And |
| // optimize whole plan at once. |
| val transFormedPlan = plan.transform { |
| case filter: Filter => |
| filter.transformExpressions { |
| case s: ScalarSubquery => |
| val tPlan = s.plan.transform { |
| case lr: LogicalRelation |
| if lr.relation.isInstanceOf[CarbonDatasourceHadoopRelation] => |
| lr.relation.asInstanceOf[CarbonDatasourceHadoopRelation].isSubquery += true |
| lr |
| } |
| ScalarSubquery(tPlan, s.children, s.exprId) |
| case e: Exists => |
| val tPlan = e.plan.transform { |
| case lr: LogicalRelation |
| if lr.relation.isInstanceOf[CarbonDatasourceHadoopRelation] => |
| lr.relation.asInstanceOf[CarbonDatasourceHadoopRelation].isSubquery += true |
| lr |
| } |
| Exists(tPlan, e.children.map(_.canonicalized), e.exprId) |
| |
| case In(value, Seq(l: ListQuery)) => |
| val tPlan = l.plan.transform { |
| case lr: LogicalRelation |
| if lr.relation.isInstanceOf[CarbonDatasourceHadoopRelation] => |
| lr.relation.asInstanceOf[CarbonDatasourceHadoopRelation].isSubquery += true |
| lr |
| } |
| In(value, Seq(ListQuery(tPlan, l.children, l.exprId))) |
| } |
| } |
| transFormedPlan |
| } |
| } |