spark CreateTableExec 源码
spark CreateTableExec 代码
文件路径：/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/CreateTableExec.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.
*/
package org.apache.spark.sql.execution.datasources.v2
import scala.collection.JavaConverters._
import org.apache.spark.sql.catalyst.InternalRow
import org.apache.spark.sql.catalyst.analysis.TableAlreadyExistsException
import org.apache.spark.sql.catalyst.expressions.Attribute
import org.apache.spark.sql.catalyst.plans.logical.TableSpec
import org.apache.spark.sql.connector.catalog.{CatalogV2Util, Identifier, TableCatalog}
import org.apache.spark.sql.connector.expressions.Transform
import org.apache.spark.sql.errors.QueryCompilationErrors
import org.apache.spark.sql.types.StructType
case class CreateTableExec(
catalog: TableCatalog,
identifier: Identifier,
tableSchema: StructType,
partitioning: Seq[Transform],
tableSpec: TableSpec,
ignoreIfExists: Boolean) extends LeafV2CommandExec {
import org.apache.spark.sql.connector.catalog.CatalogV2Implicits._
val tableProperties = CatalogV2Util.convertTableProperties(tableSpec)
override protected def run(): Seq[InternalRow] = {
if (!catalog.tableExists(identifier)) {
try {
catalog.createTable(identifier, tableSchema, partitioning.toArray, tableProperties.asJava)
} catch {
case _: TableAlreadyExistsException if ignoreIfExists =>
logWarning(s"Table ${identifier.quoted} was created concurrently. Ignoring.")
}
} else if (!ignoreIfExists) {
throw QueryCompilationErrors.tableAlreadyExistsError(identifier)
}
Seq.empty
}
override def output: Seq[Attribute] = Seq.empty
}
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