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#!/usr/bin/env ruby
#
# Created by Luke A. Kanies on 2006-11-24.
# Copyright (c) 2006. All rights reserved.
require 'puppet/external/gratr'
# subscriptions are permanent associations determining how different
# objects react to an event
class Puppet::Relationship < GRATR::Edge
# Return the callback
def callback
if label
label[:callback]
else
nil
end
end
# Return our event.
def event
if label
label[:event]
else
nil
end
end
def initialize(source, target, label = {})
if label
unless label.is_a?(Hash)
raise Puppet::DevError, "The label must be a hash"
end
if label[:event] and label[:event] != :NONE and ! label[:callback]
raise Puppet::DevError, "You must pass a callback for non-NONE events"
end
else
label = {}
end
super(source, target, label)
end
# Does the passed event match our event? This is where the meaning
# of :NONE comes from.
def match?(event)
if self.event.nil? or event == :NONE or self.event == :NONE
return false
elsif self.event == :ALL_EVENTS or event == self.event
return true
else
return false
end
end
def ref
"%s => %s" % [source.ref, target.ref]
end
end
# $Id$
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