www.gusucode.com > bigdata 工具箱 matlab源码程序 > bigdata/+matlab/+bigdata/+internal/+executor/FixedNumPartitionStrategy.m
%FixedNumPartitionStrategy % A partitioning strategy based only on a total desired number of % partitions. % % Copyright 2015-2016 The MathWorks, Inc. classdef (Sealed) FixedNumPartitionStrategy < matlab.bigdata.internal.executor.PartitionStrategy % Overrides of PartitionStrategy properties. properties (SetAccess = private) DesiredNumPartitions; IsNumPartitionsFixed = true; IsDatastorePartitioning = false; IsBroadcast = false; IsDataReplicated; end methods % The main constructor. function obj = FixedNumPartitionStrategy(numPartitions) assert (isnumeric(numPartitions) && isscalar(numPartitions) && numPartitions > 0 && mod(numPartitions, 1) == 0); obj.DesiredNumPartitions = numPartitions; obj.IsDataReplicated = (numPartitions == 1); end % Create a partition object that represents the given partition % index. function partition = createPartition(obj, partitionIndex, numPartitions) import matlab.bigdata.internal.executor.SimplePartition; if nargin >= 3 assert (isequal(numPartitions, obj.DesiredNumPartitions)); end partition = SimplePartition(partitionIndex, obj.DesiredNumPartitions); end end end