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.
   */
  
  
  package org.apache.apex.examples.filter;
  
  import org.apache.apex.malhar.contrib.formatter.CsvFormatter;
  import org.apache.apex.malhar.contrib.parser.CsvParser;
  import org.apache.apex.malhar.lib.filter.FilterOperator;
  import org.apache.apex.malhar.lib.fs.FSRecordReaderModule;
  import org.apache.apex.malhar.lib.fs.GenericFileOutputOperator.StringFileOutputOperator;
  import org.apache.hadoop.conf.Configuration;
  
  import com.datatorrent.api.DAG;
  import com.datatorrent.api.StreamingApplication;
  import com.datatorrent.api.annotation.ApplicationAnnotation;
  
  /**
   * Simple application illustrating filter operator
   *
   * @since 3.7.0
   */
  @ApplicationAnnotation(name = "FilterExample")
  public class Application implements StreamingApplication
  {
  
    @Override
    public void populateDAG(DAG dag, Configuration conf)
    {
  
      FSRecordReaderModule recordReader = dag.addModule("recordReader", FSRecordReaderModule.class);
      CsvParser csvParser = dag.addOperator("csvParser", CsvParser.class);
      FilterOperator filterOperator = dag.addOperator("filterOperator", new FilterOperator());
  
      CsvFormatter selectedFormatter = dag.addOperator("selectedFormatter", new CsvFormatter());
      CsvFormatter rejectedFormatter = dag.addOperator("rejectedFormatter", new CsvFormatter());
  
      StringFileOutputOperator selectedOutput = dag.addOperator("selectedOutput", new StringFileOutputOperator());
      StringFileOutputOperator rejectedOutput = dag.addOperator("rejectedOutput", new StringFileOutputOperator());
  
      dag.addStream("record", recordReader.records, csvParser.in);
      dag.addStream("pojo", csvParser.out, filterOperator.input);
  
      dag.addStream("pojoSelected", filterOperator.truePort, selectedFormatter.in);
      dag.addStream("pojoRejected", filterOperator.falsePort, rejectedFormatter.in);
  
      dag.addStream("csvSelected", selectedFormatter.out, selectedOutput.input);
      dag.addStream("csvRejected", rejectedFormatter.out, rejectedOutput.input);
    }
  }
  