| /* |
| * 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 org.apache.beam.sdk.Pipeline; |
| import org.apache.beam.sdk.options.PipelineOptions; |
| import org.apache.beam.sdk.options.PipelineOptionsFactory; |
| import org.apache.beam.sdk.transforms.Create; |
| import org.apache.beam.sdk.transforms.Partition; |
| import org.apache.beam.sdk.transforms.Partition.PartitionFn; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.sdk.values.PCollectionList; |
| import util.Log; |
| |
| class Task { |
| |
| public static void main(String[] args) { |
| PipelineOptions options = PipelineOptionsFactory.fromArgs(args).create(); |
| Pipeline pipeline = Pipeline.create(options); |
| |
| PCollection<Integer> numbers = |
| pipeline.apply( |
| Create.of(1, 2, 3, 4, 5, 100, 110, 150, 250) |
| ); |
| |
| PCollectionList<Integer> partition = applyTransform(numbers); |
| |
| partition.get(0).apply(Log.ofElements("Number > 100: ")); |
| partition.get(1).apply(Log.ofElements("Number <= 100: ")); |
| |
| pipeline.run(); |
| } |
| |
| static PCollectionList<Integer> applyTransform(PCollection<Integer> input) { |
| return input |
| .apply(Partition.of(2, |
| (PartitionFn<Integer>) (number, numPartitions) -> { |
| if (number > 100) { |
| return 0; |
| } else { |
| return 1; |
| } |
| })); |
| } |
| |
| } |