simple_context2.rb

#
#   Simple Context Example:
#
$LOAD_PATH.unshift File.expand_path(File.join(File.dirname(__FILE__), "..", "lib"))

require 'hybrid_dci'

Foo = Struct.new(:name) do
  include HybridDCI::Data  
end

class SimpleContext
  include HybridDCI::Context

  role :greeter do
    contract :name

    def say_hi
      puts "Hello there! says #{name}"
    end
  end

  role :goodbye_guy do
    contract :name

    def say_bye
      puts "Goodbye! says #{name}"
    end
  end

  def initialize
    @a_foo = Foo.new("Arthur")
    @another_foo = Foo.new("Marvin")

    bind_roles(:greeter => @a_foo, :goodbye_guy=> @another_foo)
  end

  def execute
    in_context do
      greeter(:call).say_hi
      goodbye_guy(:call).say_bye  
    end
    
    greeter(:call).say_hi  ## Raises error as greeter not available in context
  end

end

context = SimpleContext.new
context.execute


# => 

# >> Hello there! says Arthur
# >> Goodbye! says Marvin

# ~>  Role:greeter is not available Current Context (RuntimeError)
# ~> 	from -:44:in `execute'
# ~> 	from -:50:in `<main>'