#
# Copyright (C) 2010-2016 dtk contributors
#
# This file is part of the dtk project.
#
# 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 DTK
  class CommonDSL::Diff
    class Element
      class Modify < self
        attr_reader :current_val, :new_val
        def initialize(base_diff)
          super(base_diff.qualified_key, service_instance: base_diff.service_instance)
          @id_handle   = base_diff.id_handle
          @current_val = base_diff.current_val
          @new_val     = base_diff.new_val
        end

        def serialize(serialized_hash)
          serialized_hash.serialize_modify_element(self)
        end

        private

        def existing_object
          @existing_object ||= @id_handle.create_object
        end

      end
    end
  end
end
