Class: HashPipe::ArchivedAttribute

Inherits:
Object
  • Object
show all
Defined in:
lib/hashpipe/archived_attribute.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, scope, backend, opts = {}) ⇒ ArchivedAttribute

Returns a new instance of ArchivedAttribute.



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# File 'lib/hashpipe/archived_attribute.rb', line 10

def initialize(name, scope, backend, opts = {})
  @name    = name
  @scope   = scope
  @dirty   = false
  @options = HashPipe::GlobalConfiguration.instance.to_hash.merge(opts)
  @backend = backend
end

Instance Attribute Details

#backend ⇒ Object (readonly)

Returns the value of attribute backend.



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# File 'lib/hashpipe/archived_attribute.rb', line 7

def backend
  @backend
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/hashpipe/archived_attribute.rb', line 7

def name
  @name
end

#scope ⇒ Object

Returns the value of attribute scope.



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# File 'lib/hashpipe/archived_attribute.rb', line 8

def scope
  @scope
end

Instance Method Details

#destroy ⇒ Object 



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# File 'lib/hashpipe/archived_attribute.rb', line 40

def destroy
  backend.delete(key)
end

#dirty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/hashpipe/archived_attribute.rb', line 31

def dirty?
  @dirty
end

#key ⇒ Object 



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# File 'lib/hashpipe/archived_attribute.rb', line 48

def key
  [scope, name].join('_')
end

#options ⇒ Object 



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# File 'lib/hashpipe/archived_attribute.rb', line 44

def options
  @options
end

#save ⇒ Object 



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# File 'lib/hashpipe/archived_attribute.rb', line 35

def save
  backend[key] = @stashed_value if self.dirty?
  @dirty = false
end

#value ⇒ Object 



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# File 'lib/hashpipe/archived_attribute.rb', line 18

def value
  val = defined?(@stashed_value) ? @stashed_value : backend[key]
  val = compress? && !val.nil? ? Zlib::Inflate.inflate(val) : val
  val = marshal? ? Marshal.load(val) : val
end

#value=(other) ⇒ Object 



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# File 'lib/hashpipe/archived_attribute.rb', line 24

def value=(other)
  other = marshal? ? Marshal.dump(other) : other
  other = compress? && !other.nil? ? Zlib::Deflate.deflate(other) : other
  @stashed_value = other
  @dirty = true
end