spark InsertIntoDataSourceCommand 源码
spark InsertIntoDataSourceCommand 代码
文件路径：/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/InsertIntoDataSourceCommand.scala
/*
* 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.
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package org.apache.spark.sql.execution.datasources
import org.apache.spark.sql._
import org.apache.spark.sql.catalyst.plans.QueryPlan
import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
import org.apache.spark.sql.execution.command.LeafRunnableCommand
import org.apache.spark.sql.sources.InsertableRelation
/**
* Inserts the results of `query` in to a relation that extends [[InsertableRelation]].
*/
case class InsertIntoDataSourceCommand(
logicalRelation: LogicalRelation,
query: LogicalPlan,
overwrite: Boolean)
extends LeafRunnableCommand {
override def innerChildren: Seq[QueryPlan[_]] = Seq(query)
override def run(sparkSession: SparkSession): Seq[Row] = {
val relation = logicalRelation.relation.asInstanceOf[InsertableRelation]
val data = Dataset.ofRows(sparkSession, query)
// Data has been casted to the target relation's schema by the PreprocessTableInsertion rule.
relation.insert(data, overwrite)
// Re-cache all cached plans(including this relation itself, if it's cached) that refer to this
// data source relation.
sparkSession.sharedState.cacheManager.recacheByPlan(sparkSession, logicalRelation)
Seq.empty[Row]
}
}
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