Class: Droonga::Planner

Inherits:
Object
  • Object
show all
Includes:
ErrorMessages, Loggable
Defined in:
lib/droonga/planner.rb

Direct Known Subclasses

Droonga::Plugins::Search::Planner

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dataset) ⇒ Planner

Returns a new instance of Planner.



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# File 'lib/droonga/planner.rb', line 27

def initialize(dataset)
  @dataset = dataset
  @write = false
  @single_operation = false
  @use_all_replicas = false
  @collector_class = nil
end

Instance Attribute Details

#collector_class=(value) ⇒ Object (writeonly)

Sets the attribute collector_class

Parameters:

  • value —

    the value to set the attribute collector_class to.



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# File 'lib/droonga/planner.rb', line 25

def collector_class=(value)
  @collector_class = value
end

#single_operation=(value) ⇒ Object (writeonly)

Sets the attribute single_operation

Parameters:

  • value —

    the value to set the attribute single_operation to.



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# File 'lib/droonga/planner.rb', line 25

def single_operation=(value)
  @single_operation = value
end

#use_all_replicas=(value) ⇒ Object (writeonly)

Sets the attribute use_all_replicas

Parameters:

  • value —

    the value to set the attribute use_all_replicas to.



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# File 'lib/droonga/planner.rb', line 25

def use_all_replicas=(value)
  @use_all_replicas = value
end

#write=(value) ⇒ Object (writeonly)

Sets the attribute write

Parameters:

  • value —

    the value to set the attribute write to.



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# File 'lib/droonga/planner.rb', line 25

def write=(value)
  @write = value
end

Instance Method Details

#plan(message, params = {}) ⇒ Object 



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# File 'lib/droonga/planner.rb', line 35

def plan(message, params={})
  options = {
    :record => params[:record],
  }

  #TODO: We don't have to reduce results of the message when
  #      the message doesn't have "replyTo" information, because:
  #
  #       * Currently the "super step" mecahnism is not
  #         implemented yet.
  #       * So, reduced results won't be forwarded to other
  #         handlers directly. Results will be forwarded to
  #         the sender as the "response".
  #       * So, if "replyTo" information is not given, the
  #         reduced result will have no receiver.
  #
  #      However, in the future after the "super step" mechanism
  #      is introduced, reduced results can be required even if
  #      the request message have no "replyTo" information.
  #      Then we must update this logic.
  if @collector_class and message["replyTo"]
    reduce_key = "result"
    options[:reduce] = {
      reduce_key => @collector_class.operator,
    }
  end

  if options[:record] or single_operation?
    scatter(message, options)
  else
    broadcast(message, options)
  end
end