Class: Card::Cache::Temporary

Inherits:
Object
  • Object
show all
Defined in:
lib/card/cache/temporary.rb

Overview

The Temporary cache is intended for a single request, script, migration, etc. It allows you to alter a card and then retrieve the card with those alterations intact without saving those changes to the database.

In practice, it's a set of Cache-like methods for using a simple Hash.

Unlike the Persistent cache, the Temporary cache can handle objects with singleton classes.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Temporary

Returns a new instance of Temporary.



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# File 'lib/card/cache/temporary.rb', line 16

def initialize
  @store = {}
end

Instance Attribute Details

#store ⇒ Object (readonly)

Returns the value of attribute store.



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# File 'lib/card/cache/temporary.rb', line 14

def store
  @store
end

Instance Method Details

#delete(key) ⇒ Object

Parameters:

  • key (String) 


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# File 'lib/card/cache/temporary.rb', line 37

def delete key
  @store.delete key
end

#dump ⇒ Object 



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# File 'lib/card/cache/temporary.rb', line 41

def dump
  @store.each do |k, v|
    p "#{k} --> #{v.inspect[0..30]}"
  end
end

#exist?(key) ⇒ Boolean

Parameters:

  • key (String)

Returns:

  • (Boolean) 


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# File 'lib/card/cache/temporary.rb', line 52

def exist? key
  @store.key? key
end

#fetch(key, &_block) ⇒ Object

Parameters:

  • key (String) 


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# File 'lib/card/cache/temporary.rb', line 32

def fetch key, &_block
  read(key) || write(key, yield)
end

#read(key) ⇒ Object

Parameters:

  • key (String) 


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# File 'lib/card/cache/temporary.rb', line 21

def read key
  return unless @store.key? key
  @store[key]
end

#reset ⇒ Object 



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# File 'lib/card/cache/temporary.rb', line 47

def reset
  @store = {}
end

#write(key, value) ⇒ Object

Parameters:

  • key (String) 


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# File 'lib/card/cache/temporary.rb', line 27

def write key, value
  @store[key] = value
end