Class: KeyValue

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
lib/key_value.rb

Defined Under Namespace

Classes: HandlerSocketError

Constant Summary collapse

HS_DEFAULT_CONFIG = 
{:port => '9998'}
HS_INDEX =

just some high number…

31234
VERSION = 
File.read( File.join(File.dirname(__FILE__),'..','VERSION') ).strip

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.cache(key) ⇒ Object 



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# File 'lib/key_value.rb', line 61

def self.cache(key)
  value = get(key)
  if value.nil?
    set(key, yield)
  else
    value
  end
end

.del(key) ⇒ Object 



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# File 'lib/key_value.rb', line 53

def self.del(key)
  set(key, nil)
end

.get(key) ⇒ Object Also known as: [] 



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# File 'lib/key_value.rb', line 24

def self.get(key)
  if handler_socket
    open_key_index
    result = hs_find_by_key(key)
    YAML.load(result) if result
  else
    KeyValue.find_by_key(key).try(:value)
  end
end

.inc(key, offset = 1) ⇒ Object 



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# File 'lib/key_value.rb', line 57

def self.inc(key, offset=1)
  set(key, (get(key) || 0) + offset)
end

.set(key, value) ⇒ Object Also known as: []= 



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# File 'lib/key_value.rb', line 34

def self.set(key, value)
  if value.nil?
    KeyValue.delete_all(:key => key)
  else
    unless record = KeyValue.find_by_key(key)
      record = KeyValue.new
      record.key = key # no mass assignment on primary key
    end
    record.value = value
    record.save!
    value
  end
end

Instance Method Details

#value ⇒ Object 



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# File 'lib/key_value.rb', line 20

def value
  YAML.load(read_attribute :value)
end

#value=(x) ⇒ Object

serialize would treat false the same as nil



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# File 'lib/key_value.rb', line 15

def value=(x)
  x = x.to_yaml unless x.nil?
  write_attribute :value, x
end