ceph/src/arrow/c_glib/test/helper/readable.rb

   1 # Licensed to the Apache Software Foundation (ASF) under one
   2 # or more contributor license agreements.  See the NOTICE file
   3 # distributed with this work for additional information
   4 # regarding copyright ownership.  The ASF licenses this file
   5 # to you under the Apache License, Version 2.0 (the
   6 # "License"); you may not use this file except in compliance
   7 # with the License.  You may obtain a copy of the License at
   8 #
   9 #   http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing,
  12 # software distributed under the License is distributed on an
  13 # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  14 # KIND, either express or implied.  See the License for the
  15 # specific language governing permissions and limitations
  16 # under the License.
  17
  18 module Helper
  19   module Readable
  20     def read_table(input, type: :file)
  21       if input.is_a?(Arrow::Buffer)
  22         input_stream = Arrow::BufferIntputStream.new(input)
  23       else
  24         input_stream = Arrow::FileInputStream.new(input)
  25       end
  26       begin
  27         if type == :file
  28           reader = Arrow::RecordBatchFileReader.new(input_stream)
  29           record_batches = []
  30           reader.n_record_batches.times do |i|
  31             record_batches << reader.read_record_batch(i)
  32           end
  33           yield(Arrow::Table.new(record_batches[0].schema, record_batches))
  34         else
  35           reader = Arrow::RecordBatchStreamReader.new(input_stream)
  36           begin
  37             yield(reader.read_all)
  38           ensure
  39             reader.close
  40           end
  41         end
  42       ensure
  43         input_stream.close
  44       end
  45     end
  46   end
  47 end