content: /*
   * 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.
   */
  
  // beam-playground:
  //   name: global-window
  //   description: Global window example.
  //   multifile: false
  //   context_line: 49
  //   categories:
  //     - Quickstart
  //   complexity: ADVANCED
  //   tags:
  //     - hellobeam
  
  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.Min;
  import org.apache.beam.sdk.transforms.windowing.FixedWindows;
  import org.apache.beam.sdk.transforms.windowing.GlobalWindows;
  import org.apache.beam.sdk.transforms.windowing.Window;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.transforms.DoFn;
  import org.apache.beam.sdk.transforms.ParDo;
  import org.joda.time.Duration;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class Task {
  
      private static final Logger LOG = LoggerFactory.getLogger(Task.class);
  
      public static void main(String[] args) {
  
          LOG.info("Running Task");
  
          PipelineOptions options = PipelineOptionsFactory.fromArgs(args).create();
          Pipeline pipeline = Pipeline.create(options);
  
          PCollection<String> input =
                  pipeline.apply(
                          Create.of("To", "be", "or", "not", "to", "be","that", "is", "the", "question")
                  );
  
  
          PCollection<String> batchItems = input.apply(
                  Window.<String>into(new GlobalWindows()));
  
          batchItems.apply("Log words", ParDo.of(new LogStrings()));
  
  
          pipeline.run();
      }
  
  
      public static class LogStrings extends DoFn<String, String> {
  
          @ProcessElement
          public void processElement(ProcessContext c) throws Exception {
              LOG.info("Processing word: {}", c.element());
              c.output(c.element());
          }
      }
  }
  