Module: Dynamini::TypeHandler::ClassMethods

Defined in:
lib/dynamini/type_handler.rb

Instance Method Summary collapse

Instance Method Details

#define_handled_getter(column, format_class, _options = {}) ⇒ Object 



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# File 'lib/dynamini/type_handler.rb', line 41

def define_handled_getter(column, format_class, _options = {})
  proc = GETTER_PROCS[format_class]
  fail 'Unsupported data type: ' + format_class.to_s if proc.nil?

  define_method(column) do
    read_attribute(column)
  end
end

#define_handled_setter(column, format_class) ⇒ Object 



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# File 'lib/dynamini/type_handler.rb', line 50

def define_handled_setter(column, format_class)
  method_name = (column.to_s + '=')
  proc = SETTER_PROCS[format_class]
  fail 'Unsupported data type: ' + format_class.to_s if proc.nil?
  define_method(method_name) do |value|
    write_attribute(column, value)
  end
end

#format_default(format_class) ⇒ Object 



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# File 'lib/dynamini/type_handler.rb', line 59

def format_default(format_class)
  case format_class
    when :array
      []
    when :set
      Set.new
  end
end

#handle(column, format_class, options = {}) ⇒ Object 



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# File 'lib/dynamini/type_handler.rb', line 29

def handle(column, format_class, options = {})
  validate_handle(format_class, options)

  options[:default] ||= format_default(format_class)
  options[:default] ||= Set.new if format_class == :set

  self.handles = self.handles.merge(column => { format: format_class, options: options })

  define_handled_getter(column, format_class, options)
  define_handled_setter(column, format_class)
end

#validate_handle(format, options) ⇒ Object 



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# File 'lib/dynamini/type_handler.rb', line 68

def validate_handle(format, options)
  if format == :set
    if options[:of] && [:set, :array].include?(options[:of])
      raise ArgumentError, 'Invalid handle: cannot store non-primitive datatypes within a set.'
    end
  end
end