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Class: ActiveRecord::Type::HashLookupTypeMap

Do not use. This class is for internal use only.
Relationships & Source Files
Inherits: Object
Defined in: activerecord/lib/active_record/type/hash_lookup_type_map.rb

Class Method Summary

Instance Method Summary

Constructor Details

.new(parent = nil) ⇒ HashLookupTypeMap

[ GitHub ] 

  


# File 'activerecord/lib/active_record/type/hash_lookup_type_map.rb', line 6



def initialize(parent = nil)
  @mapping = {}
  @cache = Concurrent::Map.new do |h, key|
    h.fetch_or_store(key, Concurrent::Map.new)
  end
end


  







Instance Method Details



  

    #alias_type(type, alias_type)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/type/hash_lookup_type_map.rb', line 39



def alias_type(type, alias_type)
  register_type(type) { |_, *args| lookup(alias_type, *args) }
end


  








  

    #clear  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/type/hash_lookup_type_map.rb', line 34



def clear
  @mapping.clear
  @cache.clear
end


  








  

    #fetch(lookup_key, *args, &block)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/type/hash_lookup_type_map.rb', line 17



def fetch(lookup_key, *args, &block)
  @cache[lookup_key].fetch_or_store(args) do
    perform_fetch(lookup_key, *args, &block)
  end
end


  








  

    #key?(key)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/type/hash_lookup_type_map.rb', line 43



def key?(key)
  @mapping.key?(key)
end


  








  

    #keys  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/type/hash_lookup_type_map.rb', line 47



def keys
  @mapping.keys
end


  








  

    #lookup(lookup_key, *args)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/type/hash_lookup_type_map.rb', line 13



def lookup(lookup_key, *args)
  fetch(lookup_key, *args) { Type.default_value }
end


  








  

    #perform_fetch(type, *args, &block)   (private)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/type/hash_lookup_type_map.rb', line 52



def perform_fetch(type, *args, &block)
  @mapping.fetch(type, block).call(type, *args)
end


  








  

    #register_type(key, value = nil, &block)  
  



  

    
  





  
Raises:


    
  
  • 
    (::ArgumentError)
  
    • 





  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/type/hash_lookup_type_map.rb', line 23



def register_type(key, value = nil, &block)
  raise ::ArgumentError unless value || block

  if block
    @mapping[key] = block
  else
    @mapping[key] = proc { value }
  end
  @cache.clear
end