spark WriteToStream 源码
spark WriteToStream 代码
文件路径：/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/streaming/WriteToStream.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.catalyst.streaming
import org.apache.spark.sql.catalyst.catalog.CatalogTable
import org.apache.spark.sql.catalyst.expressions.Attribute
import org.apache.spark.sql.catalyst.plans.logical.{LogicalPlan, UnaryNode}
import org.apache.spark.sql.connector.catalog.{Identifier, Table, TableCatalog}
import org.apache.spark.sql.streaming.OutputMode
/**
* Used to create a [[StreamExecution]].
*/
case class WriteToStream(
name: String,
resolvedCheckpointLocation: String,
sink: Table,
outputMode: OutputMode,
deleteCheckpointOnStop: Boolean,
inputQuery: LogicalPlan,
catalogAndIdent: Option[(TableCatalog, Identifier)] = None,
catalogTable: Option[CatalogTable]) extends UnaryNode {
override def isStreaming: Boolean = true
override def output: Seq[Attribute] = Nil
override def child: LogicalPlan = inputQuery
override protected def withNewChildInternal(newChild: LogicalPlan): WriteToStream =
copy(inputQuery = newChild)
}
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