Contents

# encoding: UTF-8
#
# Copyright 2011 Brennan Frydl (http://bfrydl.com/)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

module Settis
  module Settings
    class Scalar
      attr_reader :name

      def initialize(name, klass, options = {})
        @name = name
        @class = klass
        @default = options[:default]

        define_methods
      end

      def get
        value = @class.redis.get(@name)

        if value.nil?
          @default
        else
          deserialize(value.to_s)
        end
      end

      def set(value)
        if value.nil?
          @class.redis.del(@name)
        else
          @class.redis.set(@name, serialize(value))
        end

        value
      end

      protected

      def serialize(value) ; value.to_s ; end
      def deserialize(value) ; value ; end

      def define_methods
        setting = self

        class << @class ; self ; end.instance_eval do
          define_method setting.name do
            setting.get
          end

          define_method :"#{setting.name}=" do |value|
            setting.set(value)
          end
        end
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
settis-0.1.0	lib/settis/settings/scalar.rb