class Geocoder::Cache

def [](url)


Read from the Cache.
# 
def [](url)
  interpret store_service.read(url)
rescue => e
  Geocoder.log(:warn, "Geocoder cache read error: #{e}")
end

def []=(url, value)


Write to the Cache.
# 
def []=(url, value)
  store_service.write(url, value)
rescue => e
  Geocoder.log(:warn, "Geocoder cache write error: #{e}")
end

def expire(url)


or pass :all to clear all URLs.
Delete cache entry for given URL,
# 
def expire(url)
  if url == :all
    if store_service.respond_to?(:keys)
      urls.each{ |u| expire(u) }
    else
      raise(NoMethodError, "The Geocoder cache store must implement `#keys` for `expire(:all)` to work")
    end
  else
    expire_single_url(url)
  end
end

def expire_single_url(url) 

def expire_single_url(url)
  store_service.remove(url)
end

def initialize(store, config) 

def initialize(store, config)
  @class = (Geocoder::CacheStore.const_get("#{store.class}", false) rescue Geocoder::CacheStore::Generic)
  @store_service = @class.new(store, config)
end

def interpret(value)


(Some key/value stores return empty string instead of nil.)
Clean up value before returning. Namely, convert empty string to nil.
# 
def interpret(value)
  value == "" ? nil : value
end

def keys


that have non-nil values.
Array of keys with the currently configured prefix
# 
def keys
  store_service.keys
end

def store_service; @store_service; end 

def store_service; @store_service; end

def urls


Array of cached URLs.
# 
def urls
  store_service.urls
end