Class: VinExploder::Cache::SequelCacheStore

Inherits:
Store
  • Object
show all
Defined in:
lib/vin_exploder/cache/sequel_cache_store.rb

Overview

A VinExploder cache adapter using Sequel for saving the decoded vin attributes.

this store assumes there are 2 columns on the table:

  • key: the first 8, 10th and 11th characters of the vin

  • data: A hash of the decoded vin attributes

Instance Attribute Summary

Attributes inherited from Store

#connection

Instance Method Summary collapse

Methods inherited from Store

#fetch

Constructor Details

#initialize(options = {}) ⇒ SequelCacheStore

Returns a new instance of SequelCacheStore.



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# File 'lib/vin_exploder/cache/sequel_cache_store.rb', line 14

def initialize(options = {})
  super
  @connection = Sequel.connect(options)
end

Instance Method Details

#delete(vin) ⇒ Object 



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# File 'lib/vin_exploder/cache/sequel_cache_store.rb', line 31

def delete(vin)
  key = make_vin_cache_key(vin)
  result = @connection[:vins].where(:key => key).delete
  result > 0
end

#read(vin) ⇒ Object 



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# File 'lib/vin_exploder/cache/sequel_cache_store.rb', line 19

def read(vin)
  key = make_vin_cache_key(vin)
  data = @connection[:vins].where(:key => key).first
  Marshal.load(data[:data]) unless data.nil?
end

#write(vin, hash) ⇒ Object 



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# File 'lib/vin_exploder/cache/sequel_cache_store.rb', line 25

def write(vin, hash)
  key = make_vin_cache_key(vin)
  @connection[:vins].insert(:key => key, :data => Marshal.dump(hash))
  hash
end