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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
#
# 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::BufferInputStream.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
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