Contents

module ROM

  # @api private
  class ReaderBuilder
    DEFAULT_OPTIONS = { inherit_header: true }.freeze

    attr_reader :relations, :readers

    # @api private
    def initialize(relations)
      @relations = relations
      @readers = {}
    end

    # @api private
    def call(name, input_options = {}, &block)
      with_options(input_options) do |options|
        parent = relations[options.fetch(:parent) { name }]

        builder = MapperBuilder.new(name, parent, options)
        builder.instance_exec(&block) if block
        mapper = builder.call

        mappers = options[:parent] ? readers.fetch(parent.name).mappers : {}

        mappers[name] = mapper
        readers[name] = Reader.new(name, parent, mappers) unless options[:parent]
      end
    end

    private

    def with_options(options)
      yield(DEFAULT_OPTIONS.merge(options))
    end

  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
rom-0.4.2	lib/rom/reader_builder.rb
rom-0.4.1	lib/rom/reader_builder.rb