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.frauddetect.operator;
  
  import java.io.File;
  
  import org.apache.apex.malhar.lib.io.fs.AbstractFileOutputOperator;
  
  import com.datatorrent.api.Context.DAGContext;
  import com.datatorrent.api.Context.OperatorContext;
  
  /**
   * Adapter for writing Strings to HDFS
   * <p>
   * Serializes tuples into a HDFS file.<br/>
   * </p>
   *
   * @since 0.9.4
   */
  public class HdfsStringOutputOperator extends AbstractFileOutputOperator<String>
  {
    private transient String outputFileName;
    private transient String contextId;
    private int index = 0;
  
    public HdfsStringOutputOperator()
    {
      setMaxLength(1024 * 1024);
    }
  
    @Override
    public void setup(OperatorContext context)
    {
      contextId = context.getValue(DAGContext.APPLICATION_NAME);
      outputFileName = File.separator + contextId +
                       File.separator + "transactions.out.part";
      super.setup(context);
    }
  
    @Override
    public byte[] getBytesForTuple(String t)
    {
      return t.getBytes();
    }
  
    @Override
    protected String getFileName(String tuple)
    {
      return outputFileName;
    }
  
    @Override
    public String getPartFileName(String fileName, int part)
    {
      return fileName + part;
    }
  }
  