| # 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. |
| |
| module Helper |
| module Readable |
| def read_table(input, type: :file) |
| if input.is_a?(Arrow::Buffer) |
| input_stream = Arrow::BufferIntputStream.new(input) |
| else |
| input_stream = Arrow::FileInputStream.new(input) |
| end |
| begin |
| if type == :file |
| reader = Arrow::RecordBatchFileReader.new(input_stream) |
| record_batches = [] |
| reader.n_record_batches.times do |i| |
| record_batches << reader.read_record_batch(i) |
| end |
| yield(Arrow::Table.new(record_batches[0].schema, record_batches)) |
| else |
| reader = Arrow::RecordBatchStreamReader.new(input_stream) |
| begin |
| yield(reader.read_all) |
| ensure |
| reader.close |
| end |
| end |
| ensure |
| input_stream.close |
| end |
| end |
| end |
| end |