Module: Sequel::Plugins::StaticCache::ClassMethods

Defined in:
lib/sequel/plugins/static_cache.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#cache ⇒ Object (readonly)

A frozen ruby hash holding all of the model’s frozen instances, keyed by frozen primary key.



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# File 'lib/sequel/plugins/static_cache.rb', line 30

def cache
  @cache
end

Instance Method Details

#all ⇒ Object

An array of all of the model’s frozen instances, without issuing a database query.



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# File 'lib/sequel/plugins/static_cache.rb', line 34

def all
  @all.dup
end

#cache_get_pk(pk) ⇒ Object

Return the frozen object with the given pk, or nil if no such object exists in the cache, without issuing a database query.



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# File 'lib/sequel/plugins/static_cache.rb', line 40

def cache_get_pk(pk)
  cache[pk]
end

#each(&block) ⇒ Object

Yield each of the model’s frozen instances to the block, without issuing a database query.



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# File 'lib/sequel/plugins/static_cache.rb', line 46

def each(&block)
  @all.each(&block)
end

#map(*a) ⇒ Object

If no arguments are given, yield each of the model’s frozen instances to the block. and return a new array, without issuing a database query. If any arguments are given, use the default Sequel behavior.



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# File 'lib/sequel/plugins/static_cache.rb', line 53

def map(*a)
  if a.empty?
    @all.map(&(Proc.new if block_given?))
  else
    super
  end
end

#set_dataset ⇒ Object

Reload the cache when the dataset changes.



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# File 'lib/sequel/plugins/static_cache.rb', line 62

def set_dataset(*)
  s = super
  load_cache
  s
end

#to_hash(*a) ⇒ Object

If no arguments are given, yield an identity map for the model with frozen primary keys and instances, without issuing a database query. If any arguments are given, use the default Sequel behavior.



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# File 'lib/sequel/plugins/static_cache.rb', line 71

def to_hash(*a)
  if a.empty?
    cache.dup
  else
    super
  end
end