Dagnabit C0 Coverage Information - RCov

     #

     # Adds named scopes to Link models.

     #

     # This module provides two named scopes for finding links scoped by

     # ancestor and descendant type.  They were designed as support for node

     # neighbor queries such as ancestors_of_type and descendants_as_type, but

     # can be used on their own.

     #

     # These links are imported into the generated transitive closure link model.

     # See Dagnabit::Link::TransitiveClosureLinkModel for more information.

     #

     # == Supplied scopes

     #

     # [ancestor_type]

     #   Returns all links having a specified ancestor type.

     #

     # [descendant_type]

     #   Returns all links having a specified descendant type.

     #

     # == A note on type matching

     #

     # Types are stored in links using ActiveRecord's polymorphic association

     # typing logic, and are matched using string matching.  Therefore, subclass

     # matching and namespacing aren't provided.

     #

     # To elaborate on this, let's say you have the following model structure:

     #

     #   class Link < ActiveRecord::Base

     #     acts_as_dag_link

     #   end

     #

     #   module Foo

     #     class Bar < ActiveRecord::Base

     #       ...

     #     end

     #   end

     #

     # A link linking Foo::Bars will record Foo::Bar as ancestor or descendant

     # type, not just 'Bar'.  The following will therefore not work:

     #

     #   Link.ancestor_type('Bar')

     #

     # You have to do:

     #

     #   Link.ancestor_type('Foo::Bar')

     #

     # or, if you'd like to hide the details of deriving a full class name:

     #

     #   Link.ancestor_type(Bar.name)

     #

                   :ancestor_type,

                   :descendant_type,

       end

     end

   end

 end