| /* |
| * 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 org.apache.spark.rdd.RDD |
| import org.apache.spark.sql.catalyst.InternalRow |
| import org.apache.spark.sql.catalyst.expressions.Attribute |
| import org.apache.spark.sql.connector.read.{InputPartition, PartitionReaderFactory, Scan} |
| import org.apache.spark.sql.connector.read.streaming.{MicroBatchStream, Offset} |
| |
| /** |
| * Physical plan node for scanning a micro-batch of data from a data source. |
| */ |
| case class MicroBatchScanExec( |
| output: Seq[Attribute], |
| @transient scan: Scan, |
| @transient stream: MicroBatchStream, |
| @transient start: Offset, |
| @transient end: Offset) extends DataSourceV2ScanExecBase { |
| |
| // TODO: unify the equal/hashCode implementation for all data source v2 query plans. |
| override def equals(other: Any): Boolean = other match { |
| case other: MicroBatchScanExec => this.stream == other.stream |
| case _ => false |
| } |
| |
| override def hashCode(): Int = stream.hashCode() |
| |
| override lazy val partitions: Seq[InputPartition] = stream.planInputPartitions(start, end) |
| |
| override lazy val readerFactory: PartitionReaderFactory = stream.createReaderFactory() |
| |
| override lazy val inputRDD: RDD[InternalRow] = { |
| new DataSourceRDD(sparkContext, partitions, readerFactory, supportsColumnar, customMetrics) |
| } |
| } |