org.apache.spark.sql.execution.datasources.parquet.ParquetRecordMaterializer.scala Maven / Gradle / Ivy
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* 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
*
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package org.apache.spark.sql.execution.datasources.parquet
import java.util.TimeZone
import org.apache.parquet.io.api.{GroupConverter, RecordMaterializer}
import org.apache.parquet.schema.MessageType
import org.apache.spark.sql.catalyst.expressions.UnsafeRow
import org.apache.spark.sql.types.StructType
/**
* A [[RecordMaterializer]] for Catalyst rows.
*
* @param parquetSchema Parquet schema of the records to be read
* @param catalystSchema Catalyst schema of the rows to be constructed
* @param schemaConverter A Parquet-Catalyst schema converter that helps initializing row converters
*/
private[parquet] class ParquetRecordMaterializer(
parquetSchema: MessageType,
catalystSchema: StructType,
schemaConverter: ParquetToSparkSchemaConverter,
convertTz: Option[TimeZone])
extends RecordMaterializer[UnsafeRow] {
private val rootConverter =
new ParquetRowConverter(schemaConverter, parquetSchema, catalystSchema, convertTz, NoopUpdater)
override def getCurrentRecord: UnsafeRow = rootConverter.currentRecord
override def getRootConverter: GroupConverter = rootConverter
}