text: #
  # Licensed to the Apache Software Foundation (ASF) under one or more
  # contributor license agreements.  See the NOTICE file distributed with
  # this work for additional information regarding copyright ownership.
  # The ASF licenses this file to You 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.
  #
  
  import os
  
  
  class SparkFiles(object):
      """
      Resolves paths to files added through
      L{SparkContext.addFile()<pyspark.context.SparkContext.addFile>}.
  
      SparkFiles contains only classmethods; users should not create SparkFiles
      instances.
      """
  
      _root_directory = None
      _is_running_on_worker = False
      _sc = None
  
      def __init__(self):
          raise NotImplementedError("Do not construct SparkFiles objects")
  
      @classmethod
      def get(cls, filename):
          """
          Get the absolute path of a file added through C{SparkContext.addFile()}.
          """
          path = os.path.join(SparkFiles.getRootDirectory(), filename)
          return os.path.abspath(path)
  
      @classmethod
      def getRootDirectory(cls):
          """
          Get the root directory that contains files added through
          C{SparkContext.addFile()}.
          """
          if cls._is_running_on_worker:
              return cls._root_directory
          else:
              # This will have to change if we support multiple SparkContexts:
              return cls._sc._jvm.org.apache.spark.SparkFiles.getRootDirectory()
  