| /* |
| * 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.csv |
| |
| import org.apache.spark.sql.SparkSession |
| import org.apache.spark.sql.catalyst.StructFilters |
| import org.apache.spark.sql.connector.read.{Scan, SupportsPushDownFilters} |
| import org.apache.spark.sql.execution.datasources.PartitioningAwareFileIndex |
| import org.apache.spark.sql.execution.datasources.v2.FileScanBuilder |
| import org.apache.spark.sql.sources.Filter |
| import org.apache.spark.sql.types.StructType |
| import org.apache.spark.sql.util.CaseInsensitiveStringMap |
| |
| case class CSVScanBuilder( |
| sparkSession: SparkSession, |
| fileIndex: PartitioningAwareFileIndex, |
| schema: StructType, |
| dataSchema: StructType, |
| options: CaseInsensitiveStringMap) |
| extends FileScanBuilder(sparkSession, fileIndex, dataSchema) with SupportsPushDownFilters { |
| |
| override def build(): Scan = { |
| CSVScan( |
| sparkSession, |
| fileIndex, |
| dataSchema, |
| readDataSchema(), |
| readPartitionSchema(), |
| options, |
| pushedFilters()) |
| } |
| |
| private var _pushedFilters: Array[Filter] = Array.empty |
| |
| override def pushFilters(filters: Array[Filter]): Array[Filter] = { |
| if (sparkSession.sessionState.conf.csvFilterPushDown) { |
| _pushedFilters = StructFilters.pushedFilters(filters, dataSchema) |
| } |
| filters |
| } |
| |
| override def pushedFilters(): Array[Filter] = _pushedFilters |
| } |