examples/enricher/src/main/java/org/apache/apex/examples/enricher/LineOutputOperator.java

/**
 * 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.enricher;

import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

import javax.validation.constraints.NotNull;

import org.apache.apex.malhar.lib.io.fs.AbstractFileOutputOperator;

/**
 * Converts each tuple to a string and writes it as a new line to the output file
 *
 * @since 3.7.0
 */
public class LineOutputOperator extends AbstractFileOutputOperator<Object>
{
  private static final String NL = System.lineSeparator();
  private static final Charset CS = StandardCharsets.UTF_8;

  @NotNull
  private String baseName;

  @Override
  public byte[] getBytesForTuple(Object t)
  {
    String result = new String(t.toString().getBytes(), CS) + NL;
    return result.getBytes(CS);
  }

  @Override
  protected String getFileName(Object tuple)
  {
    return baseName;
  }

  public String getBaseName()
  {
    return baseName;
  }

  public void setBaseName(String v)
  {
    baseName = v;
  }
}