Module: ModelCache::ClassMethods

Defined in:
lib/model-cache.rb

Instance Method Summary collapse

Instance Method Details

#cache_method(*args) ⇒ Object 



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# File 'lib/model-cache.rb', line 56

def cache_method(*args)
  opts = args.extract_options!
  args.each do |sym|
    cache_method_for_time(sym, (opts[:time] || DEFAULT_TIME))
  end
end

#cache_method_for_time(sym, time) ⇒ Object 



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# File 'lib/model-cache.rb', line 63

def cache_method_for_time(sym, time)
  alias_method :"__noncached_#{sym}", sym
  define_method sym do |*args|
     if self.instance_variable_get(:@__invalidate_cache) 
       self.send(:"__noncached_#{sym}", *args)
     else
      ckey = [self.cache_key, sym, *args]
      ckey = ckey.hash.to_s(16)
      ModelCache.cache(ckey, time) do
         self.send(:"__noncached_#{sym}", *args)
      end
     end
  end    
  define_method :"__is_cached_#{sym}?" do |*args|
    ckey = [self.cache_key, sym, *args]
    ckey = ckey.hash.to_s(16)
     if CACHE.class.name == 'Memcached'
       begin
         result = CACHE.get(ckey.hash.to_s)
         cache_hit = true
       rescue Memcached::NotFound => e
       end
     elsif CACHE.class.name == 'MemCache' or CACHE.class.name == 'Dalli::Client'
       result = CACHE.get(ckey.hash.to_s)
       if result
         cache_hit = true
       end
       if result == NIL_OBJECT
         result = nil
       end
     else
       raise "CACHE object not configured #{CACHE.inspect}!"
     end
     cache_hit
  end
  define_method :"__flush_#{sym}" do |*args|
    ckey = [self.cache_key, sym, *args]
    ckey = ckey.hash.to_s(16)
    CACHE.delete(ckey)
  end
end