Module: Dynamoid::IdentityMap::ClassMethods

Defined in:
lib/dynamoid/identity_map.rb

Instance Method Summary collapse

Instance Method Details

#find_by_id(id, options = {}) ⇒ Object


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# File 'lib/dynamoid/identity_map.rb', line 34

def find_by_id(id, options = {})
  return super if identity_map_off?

  key = id.to_s

  if range_key = options[:range_key]
    key += "::#{range_key}"
  end

  identity_map[key] || super
end

#from_database(attrs = {}) ⇒ Object


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# File 'lib/dynamoid/identity_map.rb', line 17

def from_database(attrs = {})
  return super if identity_map_off?

  key = identity_map_key(attrs)
  document = identity_map[key]

  if document.nil?
    document = super
    identity_map[key] = document
  else
    document.load(attrs)
  end

  document
end

#identity_mapObject


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# File 'lib/dynamoid/identity_map.rb', line 12

def identity_map
  @identity_map ||= {}
end

#identity_map_key(attrs) ⇒ Object


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# File 'lib/dynamoid/identity_map.rb', line 47

def identity_map_key(attrs)
  key = attrs[hash_key].to_s
  key += "::#{attrs[range_key]}" if range_key
  key
end

#identity_map_off?Boolean

Returns:

  • (Boolean)

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# File 'lib/dynamoid/identity_map.rb', line 57

def identity_map_off?
  !identity_map_on?
end

#identity_map_on?Boolean

Returns:

  • (Boolean)

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# File 'lib/dynamoid/identity_map.rb', line 53

def identity_map_on?
  Dynamoid::Config.identity_map
end