parquet/record/record_reader.rs
// 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
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// KIND, either express or implied. See the License for the
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use super::super::errors::ParquetError;
use super::super::file::reader::RowGroupReader;
/// Read up to `num_records` records from `row_group_reader` into `self`.
///
/// The type parameter `T` is used to work around the rust orphan rule
/// when implementing on types such as `Vec<T>`.
pub trait RecordReader<T> {
/// Read up to `num_records` records from `row_group_reader` into `self`.
fn read_from_row_group(
&mut self,
row_group_reader: &mut dyn RowGroupReader,
num_records: usize,
) -> Result<(), ParquetError>;
}