spark SetCatalogAndNamespaceExec 源码
spark SetCatalogAndNamespaceExec 代码
文件路径：/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/SetCatalogAndNamespaceExec.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.
* See the License for the specific language governing permissions and
* limitations under the License.
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package org.apache.spark.sql.execution.datasources.v2
import org.apache.spark.sql.catalyst.InternalRow
import org.apache.spark.sql.catalyst.expressions.Attribute
import org.apache.spark.sql.connector.catalog.CatalogManager
/**
* Physical plan node for setting the current catalog and/or namespace.
*/
case class SetCatalogAndNamespaceExec(
catalogManager: CatalogManager,
catalogName: Option[String],
namespace: Option[Seq[String]])
extends LeafV2CommandExec {
override protected def run(): Seq[InternalRow] = {
// The catalog is updated first because CatalogManager resets the current namespace
// when the current catalog is set.
catalogName.foreach(catalogManager.setCurrentCatalog)
namespace.foreach(ns => catalogManager.setCurrentNamespace(ns.toArray))
Seq.empty
}
override def output: Seq[Attribute] = Seq.empty
}
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