Class: DRb::DRbIdConv

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

Overview

Class responsible for converting between an object and its id.

This, the default implementation, uses an object’s local ObjectSpace __id__ as its id. This means that an object’s identification over drb remains valid only while that object instance remains alive within the server runtime.

For alternative mechanisms, see DRb::TimerIdConv in drb/timeridconv.rb and DRbNameIdConv in sample/name.rb in the full drb distribution.

Direct Known Subclasses

GWIdConv, TimerIdConv, WeakIdConv

Instance Method Summary collapse

Instance Method Details

#to_id(obj) ⇒ Object

Convert an object into a reference id.

This implementation returns the object’s __id__ in the local object space.



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# File 'lib/drb/drb.rb', line 373

def to_id(obj)
  case obj
  when Object
    obj.nil? ? nil : obj.__id__
  when BasicObject
    obj.__id__
  end
end

#to_obj(ref) ⇒ Object

Convert an object reference id to an object.

This implementation looks up the reference id in the local object space and returns the object it refers to.



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# File 'lib/drb/drb.rb', line 365

def to_obj(ref)
  ObjectSpace._id2ref(ref)
end