Class: Roby::Models::TaskServiceModel

Inherits:
Module show all
Includes:
MetaRuby::ModelAsModule, DRoby::Identifiable, DRoby::V5::Models::TaskServiceModelDumper, Arguments
Defined in:
lib/roby/models/task_service.rb,
lib/roby/droby/enable.rb

Overview

Ruby (the language) has no support for multiple inheritance. Instead, it uses module to extend classes outside of the class hierarchy.

TaskService are the equivalent concept in the world of task models. They are a limited for of task models, which can be used to represent that certain task models have multiple functions.

For instance,

task_service "CameraDriver" do
   # CameraDriver is an abstract model used to represent that some tasks
   # are providing the services of cameras. They can be used to tag tasks
   # that belong to different class hirerachies.
   #
   # One can set up arguments on TaskService the same way than class models:
   argument :camera_name
   argument :aperture
   argument :aperture
end

FirewireDriver.provides CameraDriver
# FirewireDriver can now be used in relationships where CameraDriver was
# needed

Constant Summary

Constants included from Arguments

Arguments::NO_DEFAULT_ARGUMENT

Instance Method Summary collapse

Methods included from DRoby::V5::ModelDumper

#droby_dump, #droby_marshallable?

Methods included from DRoby::Identifiable

#droby_id, #initialize_copy

Methods included from Arguments

#argument, #arguments, #default_argument, #fullfills?, #meaningful_arguments

Methods inherited from Module

#action_library, #droby_dump, #droby_marshallable?, #each_fullfilled_model, #private_model?, #proxy_for

Methods included from TaskServiceDefinitionDSL

#task_service

Instance Method Details

#clear_model ⇒ Object 



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# File 'lib/roby/models/task_service.rb', line 32

def clear_model
    super
    arguments.clear
end

#match(*args) ⇒ Object 



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# File 'lib/roby/models/task_service.rb', line 47

def match(*args)
    matcher = Queries::TaskMatcher.new
    if args.empty? && self != TaskService
        matcher.which_fullfills(self)
    else
        matcher.which_fullfills(*args)
    end
    matcher
end

#query(*args) ⇒ Object 



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# File 'lib/roby/models/task_service.rb', line 37

def query(*args)
    query = Queries::Query.new
    if args.empty? && self != TaskService
        query.which_fullfills(self)
    else
        query.which_fullfills(*args)
    end
    query
end