jackylk commented on a change in pull request #3378: [CARBONDATA-3514] Support Spark 2.4.4 integration URL: https://github.com/apache/carbondata/pull/3378#discussion_r358112516
########## File path: integration/spark2/src/main/spark2.4/org/apache/spark/sql/CarbonToSparkAdapter.scala ########## @@ -0,0 +1,135 @@ +/* + * 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 + +import java.net.URI + +import org.apache.spark.SparkContext +import org.apache.spark.scheduler.{SparkListener, SparkListenerApplicationEnd} +import org.apache.spark.sql.catalyst.catalog.CatalogStorageFormat +import org.apache.spark.sql.catalyst.expressions.{Alias, AttributeReference, AttributeSet, ExprId, Expression, ExpressionSet, NamedExpression, ScalaUDF, SubqueryExpression} +import org.apache.spark.sql.catalyst.expressions.codegen._ +import org.apache.spark.sql.catalyst.expressions.codegen.Block._ +import org.apache.spark.sql.catalyst.plans.logical.{LogicalPlan, OneRowRelation} +import org.apache.spark.sql.catalyst.rules.Rule +import org.apache.spark.sql.execution.command.ExplainCommand +import org.apache.spark.sql.types.{DataType, Metadata} + +object CarbonToSparkAdapter { + + def addSparkListener(sparkContext: SparkContext) = { + sparkContext.addSparkListener(new SparkListener { + override def onApplicationEnd(applicationEnd: SparkListenerApplicationEnd): Unit = { + SparkSession.setDefaultSession(null) + } + }) + } + + def createAttributeReference( + name: String, + dataType: DataType, + nullable: Boolean, + metadata: Metadata, + exprId: ExprId, + qualifier: Option[String], + attrRef : NamedExpression = null): AttributeReference = { + val qf = if (qualifier.nonEmpty) Seq(qualifier.get) else Seq.empty + AttributeReference( + name, + dataType, + nullable, + metadata)(exprId, qf) + } + + def createAttributeReference( + name: String, + dataType: DataType, + nullable: Boolean, + metadata: Metadata, + exprId: ExprId, + qualifier: Seq[String]): AttributeReference = { + AttributeReference( + name, + dataType, + nullable, + metadata)(exprId, qualifier) + } + + def createScalaUDF(s: ScalaUDF, reference: AttributeReference) = { + ScalaUDF(s.function, s.dataType, Seq(reference), s.inputsNullSafe, s.inputTypes) + } + + def createExprCode(code: String, isNull: String, value: String, dataType: DataType) = { + ExprCode( + code"$code", + JavaCode.isNullVariable(isNull), + JavaCode.variable(value, dataType)) + } + + def createAliasRef( + child: Expression, + name: String, + exprId: ExprId = NamedExpression.newExprId, + qualifier: Seq[String] = Seq.empty, + explicitMetadata: Option[Metadata] = None, + namedExpr: Option[NamedExpression] = None) : Alias = { + Alias(child, name)(exprId, qualifier, explicitMetadata) + } + + def createAliasRef( + child: Expression, + name: String, + exprId: ExprId, + qualifier: Option[String]) : Alias = { + Alias(child, name)(exprId, + if (qualifier.isEmpty) Seq.empty else Seq(qualifier.get), + None) + } + + def getExplainCommandObj() : ExplainCommand = { + ExplainCommand(OneRowRelation()) + } + + /** + * As a part of SPARK-24085 Hive tables supports scala subquery for + * parition tables,so Carbon also needs to supports Review comment: fixed ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
