import quincy 17.2.0

[ceph.git] / ceph / src / arrow / ruby / red-parquet / lib / parquet / arrow-table-savable.rb

# 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
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# 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 Parquet
  module ArrowTableSavable
    private
    def save_as_parquet
      properties = WriterProperties.new
      @options.each do |key, value|
        next if value.nil?
        set_method_name = "set_#{key}"
        next unless properties.respond_to?(set_method_name)
        case value
        when ::Array, ::Hash
          value.each do |path, v|
            properties.__send__(set_method_name, v, path)
          end
        else
          properties.__send__(set_method_name, value)
        end
      end
      chunk_size = @options[:chunk_size] || @table.n_rows
      open_raw_output_stream do |output|
        ArrowFileWriter.open(@table.schema,
                             output,
                             properties) do |writer|
          writer.write_table(@table, chunk_size)
        end
      end
    end
  end
end

module Arrow
  class TableSaver
    include Parquet::ArrowTableSavable
  end
end