Class: LanGrove::Behaviour::Assessable

Inherits:
LanGrove::Base show all
Defined in:
lib/langrove/behaviour/assessable.rb

Instance Attribute Summary

Attributes inherited from LanGrove::Base

#logger

Instance Method Summary collapse

Methods inherited from LanGrove::Base

#config_exception, #type

Constructor Details

#initialize(root, config, name) ⇒ Assessable

Assessable provides a second persistance for a ‘previous’ capsule, with a built in DELTA detector.



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# File 'lib/langrove/behaviour/assessable.rb', line 14

def initialize( root, config, name )
  
  @requires = {
    
    #
    # The Assessor plugin should contain an embedded Persistor plugin.
    #
    :assessor => {
      
      :actions => [
        
        #
        # Assessor should implement:
        # 
        # (In addition to having access to store() and fetch() from
        #  the nested Persistor)
        #
        # <Plugin>.assess( handler )
        #
        # - Should use the handler.key to collect from a 
        #   second persistance the 'previous' capsule 
        #   contents and - upon comparison with the supplied
        #   handler.capsule (the latest)
        # 
        #   -- emit Notifications on each DELTA
        #   -- store the new capsule as the 'new previous'
        # 
        # - Success assumed.
        # 
        # - (on failure) Should THROW
        #
        :assess
        
      ],
      
      :version => ASSESSABLE_VERSION
      
    }
    
  } if @requires.nil?
  
  super

end