Class: Ree::LinkValidator

Inherits:
Object show all
Defined in:
lib/ree/core/link_validator.rb

Instance Method Summary collapse

Constructor Details

#initialize(packages_facade) ⇒ LinkValidator

Returns a new instance of LinkValidator.



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# File 'lib/ree/core/link_validator.rb', line 4

def initialize(packages_facade)
  @packages_facade = packages_facade
end

Instance Method Details

#call(object, link) ⇒ nil

Validates existance and uniqueness of linked object

Parameters:

Returns:

  • (nil) 


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# File 'lib/ree/core/link_validator.rb', line 12

def call(object, link)
  link_package = @packages_facade.get_package(link.package_name)
  link_object = link_package.get_object(link.object_name)

  if !link_object
    msg = <<~DOC
      object: :#{object.name}
      path: #{Ree::PathHelper.abs_object_path(object)}
      error: Unable to find  :#{link.object_name} in :#{link.package_name} package
    DOC

    raise Ree::Error.new(msg, :invalid_dsl_usage)
  end

  existing_link = link_object.links.detect do |inj|
    inj.object_name == link.object_name && inj.package_name == link.package_name
  end

  if existing_link
    msg = <<~DOC
      object: :#{object.name}
      path: #{Ree::PathHelper.abs_object_path(object)}
      error: Duplicate link :#{link.object_name}
    DOC

    raise Ree::Error.new(msg, :invalid_dsl_usage)
  end

  nil
end