DRb::DRbObject (Class)

In: drb/gw.rb
drb/eq.rb
drb/drb.rb
Parent: Object

Object wrapping a reference to a remote drb object.

Method calls on this object are relayed to the remote object that this object is a stub for.

Methods

==   __drbref   __drburi   _dump   _dump   _load   _load   eql?   hash   method_missing   new   new_with_uri   reinit  

Public Class methods

_load(s)

Unmarshall a marshalled DRbObject.

If the referenced object is located within the local server, then the object itself is returned. Otherwise, a new DRbObject is created to act as a stub for the remote referenced object.

[Source]

# File drb/drb.rb, line 945
    def self._load(s)
      uri, ref = Marshal.load(s)
      if DRb.here?(uri)
        return DRb.to_obj(ref)
      end

      it = self.new(nil)
      it.reinit(uri, ref)
      it
    end
_load(s)

[Source]

# File drb/gw.rb, line 37
    def self._load(s)
      uri, ref = Marshal.load(s)
      if DRb.uri == uri
        return ref ? DRb.to_obj(ref) : DRb.front
      end

      it = self.new(nil)
      it.reinit(DRb.uri, [:DRbObject, uri, ref])
      it
    end
new(obj, uri=nil)

Create a new remote object stub.

obj is the (local) object we want to create a stub for. Normally this is nil. uri is the URI of the remote object that this will be a stub for.

[Source]

# File drb/drb.rb, line 973
    def initialize(obj, uri=nil)
      @uri = nil
      @ref = nil
      if obj.nil?
        return if uri.nil?
        @uri, option = DRbProtocol.uri_option(uri, DRb.config)
        @ref = DRbURIOption.new(option) unless option.nil?
      else
        @uri = uri ? uri : (DRb.uri rescue nil)
        @ref = obj ? DRb.to_id(obj) : nil
      end
    end
new_with_uri(uri)

Create a new DRbObject from a URI alone.

[Source]

# File drb/drb.rb, line 957
    def self.new_with_uri(uri)
      self.new(nil, uri)
    end

Public Instance methods

==(other)

[Source]

# File drb/eq.rb, line 5
    def ==(other)
      return false unless DRbObject === other
     (@ref == other.__drbref) && (@uri == other.__drburi)
    end
__drbref()

Get the reference of the object, if local.

[Source]

# File drb/drb.rb, line 998
    def __drbref
      @ref
    end
__drburi()

Get the URI of the remote object.

[Source]

# File drb/drb.rb, line 993
    def __drburi 
      @uri
    end
_dump(lv)

[Source]

# File drb/gw.rb, line 48
    def _dump(lv)
      if DRb.uri == @uri
        if Array === @ref && @ref[0] == :DRbObject
          Marshal.dump([@ref[1], @ref[2]])
        else
          Marshal.dump([@uri, @ref]) # ??

        end
      else
        Marshal.dump([DRb.uri, [:DRbObject, @uri, @ref]])
      end
    end
_dump(lv)

Marshall this object.

The URI and ref of the object are marshalled.

[Source]

# File drb/drb.rb, line 964
    def _dump(lv)
      Marshal.dump([@uri, @ref])
    end
eql?(other)

Alias for #==

hash()

[Source]

# File drb/eq.rb, line 10
    def hash
      [@uri, @ref].hash
    end
method_missing(msg_id, *a, &b)

Routes method calls to the referenced object.

[Source]

# File drb/drb.rb, line 1007
    def method_missing(msg_id, *a, &b)
      if DRb.here?(@uri)
        obj = DRb.to_obj(@ref)
        DRb.current_server.check_insecure_method(obj, msg_id)
        return obj.__send__(msg_id, *a, &b) 
      end

      succ, result = DRbConn.open(@uri) do |conn|
        conn.send_message(self, msg_id, a, b)
      end
      return result if succ
      unless DRbUnknown === result
        prefix = "(#{@uri}) "
        bt = []
        result.backtrace.each do |x|
          break if /`__send__'$/ =~ x 
          if /^\(druby:\/\// =~ x
            bt.push(x)
          else
            bt.push(prefix + x)
          end
        end
        raise result, result.message, bt + caller
      else
        raise result
      end
    end
reinit(uri, ref)

Reinitialise this object with the given uri and ref

[Source]

# File drb/drb.rb, line 987
    def reinit(uri, ref)
      @uri = uri
      @ref = ref
    end

[Validate]