Contents

# frozen_string_literal: true

require_relative 'view'

module Scenic
  module Cascade
    # Represents a view dependency
    class Dependency
      attr_reader :from, :to

      def initialize(from:, to:)
        raise TypeError unless from.is_a?(Scenic::Cascade::View)
        raise TypeError unless to.is_a?(Scenic::Cascade::View)

        @from = from
        @to = to
      end

      def ==(other)
        from == other.from && to == other.to
      end

      # mermaid-like syntax
      def to_s
        "#{from.name}[#{from}] --> #{to.name}[#{to}]"
      end

      alias inspect to_s

      def self.from_hash(hash)
        from = Scenic::Cascade::View.new(name: hash['from'], materialized: hash['from_materialized'])
        to = Scenic::Cascade::View.new(name: hash['to'], materialized: hash['to_materialized'])
        new(from: from, to: to)
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
scenic-cascade-0.1.0	lib/scenic/cascade/dependency.rb