python/pyspark/resultiterable.py

0001 #
0002 # Licensed to the Apache Software Foundation (ASF) under one or more
0003 # contributor license agreements.  See the NOTICE file distributed with
0004 # this work for additional information regarding copyright ownership.
0005 # The ASF licenses this file to You under the Apache License, Version 2.0
0006 # (the "License"); you may not use this file except in compliance with
0007 # the License.  You may obtain a copy of the License at
0008 #
0009 #    http://www.apache.org/licenses/LICENSE-2.0
0010 #
0011 # Unless required by applicable law or agreed to in writing, software
0012 # distributed under the License is distributed on an "AS IS" BASIS,
0013 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014 # See the License for the specific language governing permissions and
0015 # limitations under the License.
0016 #
0017
0018 try:
0019     from collections.abc import Iterable
0020 except ImportError:
0021     from collections import Iterable
0022
0023
0024 __all__ = ["ResultIterable"]
0025
0026
0027 class ResultIterable(Iterable):
0028
0029     """
0030     A special result iterable. This is used because the standard
0031     iterator can not be pickled
0032     """
0033
0034     def __init__(self, data):
0035         self.data = data
0036         self.index = 0
0037         self.maxindex = len(data)
0038
0039     def __iter__(self):
0040         return iter(self.data)
0041
0042     def __len__(self):
0043         return len(self.data)