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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 ArrowDataset
module ArrowTableLoadable
private
def path_to_uri(path)
absolute_path = ::File.expand_path(path)
if absolute_path.start_with?("/")
URI("file://#{absolute_path}")
else
URI("file:///#{absolute_path}")
end
end
def load_from_directory
internal_load_from_uri(path_to_uri(@input))
end
def load_from_uri
internal_load_from_uri(@input)
end
def internal_load_from_uri(uri)
format = FileFormat.resolve(@options[:format])
dataset = FileSystemDataset.build(format) do |factory|
factory.file_system_uri = uri
end
scanner_builder = dataset.begin_scan
@options.each do |key, value|
next if key == :format
next if value.nil?
setter = "#{key}="
next unless scanner_builder.respond_to?(setter)
scanner_builder.public_send(setter, value)
end
scanner = scanner_builder.finish
scanner.to_table
end
end
end
module Arrow
class TableLoader
include ArrowDataset::ArrowTableLoadable
end
end
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