Class: ArrowFormat::Field

Inherits:
Object
  • Object
show all
Defined in:
lib/arrow-format/field.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, type, nullable: true, metadata: nil) ⇒ Field

Returns a new instance of Field.



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# File 'lib/arrow-format/field.rb', line 22

def initialize(name,
               type,
               nullable: true,
               metadata: nil)
  @name = name
  @type = type
  @nullable = nullable
  @metadata = metadata
end

Instance Attribute Details

#metadata ⇒ Object (readonly)

Returns the value of attribute metadata.



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# File 'lib/arrow-format/field.rb', line 21

def metadata
  @metadata
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/arrow-format/field.rb', line 19

def name
  @name
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/arrow-format/field.rb', line 20

def type
  @type
end

Instance Method Details

#nullable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/arrow-format/field.rb', line 32

def nullable?
  @nullable
end

#to_flatbuffers ⇒ Object 



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# File 'lib/arrow-format/field.rb', line 36

def to_flatbuffers
  fb_field = FB::Field::Data.new
  fb_field.name = @name
  fb_field.nullable = @nullable
  if @type.respond_to?(:build_fb_field)
    @type.build_fb_field(fb_field)
  else
    fb_field.type = @type.to_flatbuffers
  end
  if @type.respond_to?(:child)
    fb_field.children = [@type.child.to_flatbuffers]
  elsif @type.respond_to?(:children)
    fb_field.children = @type.children.collect(&:to_flatbuffers)
  end
  fb_field.custom_metadata = FB.build_custom_metadata(@metadata)
  fb_field
end