Module: Seabright::Triggers::ClassMethods

Defined in:
lib/redis_object/ext/triggers.rb

Instance Method Summary collapse

Instance Method Details

#field_triggers ⇒ Object 



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# File 'lib/redis_object/ext/triggers.rb', line 64

def field_triggers
  @field_triggers ||= {}
end

#intercept_reference_for_triggers! ⇒ Object 



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# File 'lib/redis_object/ext/triggers.rb', line 46

def intercept_reference_for_triggers!
  return if @intercepted_reference_for_triggers
  self.class_eval do
    alias_method :untriggered_reference, :reference unless method_defined?(:untriggered_reference)
    def reference(obj)
      untriggered_reference(obj)
      self.class.reference_triggers.each do |actn|
        send(actn.to_sym,obj)
      end
    end
  end
  @intercepted_reference_for_triggers = true
end

#intercept_sets_for_triggers! ⇒ Object 



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# File 'lib/redis_object/ext/triggers.rb', line 11

def intercept_sets_for_triggers!
  return if @intercepted_sets_for_triggers
  self.class_eval do
    
    def triggered_set(cmd,k,v)
      ret = send("untriggered_#{cmd}".to_sym,k,v)
      return ret if self.class.untriggerables.include?(k)
      begin
        self.class.untriggerables << k
        if self.class.field_triggers[k.to_sym]
          send(self.class.field_triggers[k.to_sym],k,v)
        end
        self.class.update_triggers.each do |actn|
          send(actn.to_sym,k,v)
        end
      ensure
        self.class.untriggerables.delete k
      end
      ret
    end
    
    alias_method :untriggered_set, :set unless method_defined?(:untriggered_set)
    def set(k,v)
      triggered_set(:set,k,v)
    end
    
    alias_method :untriggered_setnx, :setnx unless method_defined?(:untriggered_setnx)
    def setnx(k,v)
      triggered_set(:setnx,k,v)
    end
    
  end
  @intercepted_sets_for_triggers = true
end

#reference_triggers ⇒ Object 



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# File 'lib/redis_object/ext/triggers.rb', line 82

def reference_triggers
  @reference_triggers ||= Set.new
end

#trigger_on_reference(actn) ⇒ Object 



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# File 'lib/redis_object/ext/triggers.rb', line 77

def trigger_on_reference(actn)
  reference_triggers << actn.to_sym
  intercept_reference_for_triggers!
end

#trigger_on_set(fld, actn) ⇒ Object 



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# File 'lib/redis_object/ext/triggers.rb', line 6

def trigger_on_set(fld,actn)
  field_triggers[fld.to_sym] = actn.to_sym
  intercept_sets_for_triggers!
end

#trigger_on_update(actn) ⇒ Object 



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# File 'lib/redis_object/ext/triggers.rb', line 68

def trigger_on_update(actn)
  update_triggers << actn.to_sym
  intercept_sets_for_triggers!
end

#untriggerables ⇒ Object 



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# File 'lib/redis_object/ext/triggers.rb', line 60

def untriggerables
  @untriggerables ||= [:updated_at,:created_at]
end

#update_triggers ⇒ Object 



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# File 'lib/redis_object/ext/triggers.rb', line 73

def update_triggers
  @update_triggers ||= Set.new
end