Class: Arrow::TableLoader

Inherits:
Object
  • Object
show all
Defined in:
lib/arrow/table-loader.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(input, options = {}) ⇒ TableLoader

Returns a new instance of TableLoader.



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# File 'lib/arrow/table-loader.rb', line 28

def initialize(input, options={})
  input = input.to_path if input.respond_to?(:to_path)
  @input = input
  @options = options
  fill_options
end

Class Method Details

.load(input, options = {}) ⇒ Object 



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# File 'lib/arrow/table-loader.rb', line 23

def load(input, options={})
  new(input, options).load
end

Instance Method Details

#load ⇒ Object 



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# File 'lib/arrow/table-loader.rb', line 35

def load
  if @input.is_a?(URI)
    custom_load_method = "load_from_uri"
  elsif @input.is_a?(String) and ::File.directory?(@input)
    custom_load_method = "load_from_directory"
  else
    custom_load_method = "load_from_file"
  end
  unless respond_to?(custom_load_method, true)
    available_schemes = []
    (methods(true) | private_methods(true)).each do |name|
      match_data = /\Aload_from_/.match(name.to_s)
      if match_data
        available_schemes << match_data.post_match
      end
    end
    message = "Arrow::Table load source must be one of ["
    message << available_schemes.join(", ")
    message << "]: #{@input.inspect}"
    raise ArgumentError, message
  end
  __send__(custom_load_method)
end