Class: MemoizeUntil::Store

Inherits:
Object
  • Object
show all
Defined in:
lib/memoize_until/store.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(kind) ⇒ Store

Returns a new instance of Store.



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# File 'lib/memoize_until/store.rb', line 7

def initialize(kind)
  @_store = {}
  @_kind = kind
  @_mutex = Mutex.new
end

Instance Attribute Details

#_kind ⇒ Object (readonly)

Returns the value of attribute _kind.



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# File 'lib/memoize_until/store.rb', line 5

def _kind
  @_kind
end

#_mutex ⇒ Object (readonly)

Returns the value of attribute _mutex.



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# File 'lib/memoize_until/store.rb', line 5

def _mutex
  @_mutex
end

#_store ⇒ Object (readonly)

Returns the value of attribute _store.



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# File 'lib/memoize_until/store.rb', line 5

def _store
  @_store
end

Instance Method Details

#add(key) ⇒ Object

add runtime keys



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# File 'lib/memoize_until/store.rb', line 29

def add(key)
  _mutex.synchronize do
    _store[key] ||= {}
  end
end

#clear_all(key) ⇒ Object

clears all previously memoized values for the given key only clears memory in the process that this code runs. added for supporting fetch and custom scripts



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# File 'lib/memoize_until/store.rb', line 38

def clear_all(key)
  _mutex.synchronize do
    _store[key] = {}
  end
end

#clear_now(key) ⇒ Object

clears previously memoized value for "now" for the given key only clears memory in the process that this code runs on. added for supporting custom scripts / test cases



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# File 'lib/memoize_until/store.rb', line 47

def clear_now(key)
  now = Time.now.public_send(_kind)
  set(key, now, nil)
end

#fetch(key) ⇒ Object

returns the value from memory if already memoized for "now" for the given key else evaluates the block and memoizes that caches nils too



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# File 'lib/memoize_until/store.rb', line 16

def fetch(key)
  now = Time.now.public_send(_kind)
  value = get(key, now)

  if value.nil?
    clear_all(key)
    value = set(key, now, set_nil(yield))
  end

  unset_nil(value)
end