text: # Copyright 2019 The Forte Authors. All Rights Reserved.
  #
  # 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.
  
  from forte.data.base_pack import PackType
  from forte.processors.base.writers import JsonPackWriter
  
  
  class DocIdJsonPackWriter(JsonPackWriter[PackType]):
      # pylint: disable=no-self-use
      def sub_output_path(self, pack: PackType) -> str:
          if pack.meta.doc_id is None:
              raise ValueError(
                  "Cannot use DocIdJsonPackWriter when doc id is not set.")
          return pack.meta.doc_id + '.json'
  