Class: Global

Inherits:
Object
  • Object
show all
Defined in:
lib/raw/context/global.rb

Overview

Global scoped variables. This is backed by a Cache store. – TODO: implement as a refactoring of session? ++

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.cache ⇒ Object

The global cache (store).



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# File 'lib/raw/context/global.rb', line 30

def cache
  @cache
end

Class Method Details

.delete(key) ⇒ Object 



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# File 'lib/raw/context/global.rb', line 82

def delete(key)
  Global.cache.delete(key)
end

.get(key) ⇒ Object Also known as: [] 



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# File 'lib/raw/context/global.rb', line 61

def get(key)
  return Global.cache[key]
end

.init(key, value) ⇒ Object

Initialize a global value once.



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# File 'lib/raw/context/global.rb', line 50

def init(key, value)
  unless Global[key]
    Global[key] = value
  end
end

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



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# File 'lib/raw/context/global.rb', line 56

def set(key, value)
  Global.cache[key] = value
end

.setup(type = Global.cache_type) ⇒ Object

Init the correct Global cache.



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# File 'lib/raw/context/global.rb', line 34

def setup(type = Global.cache_type)
  return if Global.cache

  case type
    when :memory
      require 'glue/cache/memory'
      Global.cache = Glue::MemoryCache.new

    when :drb
      require 'glue/cache/drb'
      Global.cache = DrbCache.new(Global.cache_address, Global.cache_port)          
  end
end

.update(key) ⇒ Object

If block is given it acts as an update methods, that transparently handles distributed stores.

Global.update(:USERS) do |users|

users << 'gmosx'

end



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# File 'lib/raw/context/global.rb', line 73

def update(key)
  if block_given?
    # update, also handles distributed stores.
    val = Global.cache[key]
    yield val
    Global.cache[key] = val
  end    
end