org.apache.spark.sql.execution.datasources.InsertIntoDataSourceCommand.scala Maven / Gradle / Ivy
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* http://www.apache.org/licenses/LICENSE-2.0
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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.RunnableCommand
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 RunnableCommand {
override protected 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)
// Apply the schema of the existing table to the new data.
val df = sparkSession.internalCreateDataFrame(data.queryExecution.toRdd, logicalRelation.schema)
relation.insert(df, overwrite)
// Invalidate the cache.
sparkSession.sharedState.cacheManager.invalidateCache(logicalRelation)
Seq.empty[Row]
}
}