/**
 * 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.malhar.lib.function;

import java.io.PrintStream;

import org.apache.hadoop.classification.InterfaceStability;

/***
 * A utility class that can be used in conjunction with the FunctionOperator class
 */
@InterfaceStability.Evolving
/**
 * @since 3.8.0
 */
public class FunctionOperatorUtil
{

  /***
   * A Map Function implementation that can be used to write to the Console as a sink.
   */
  @SuppressWarnings("serial")
  public static final Function.MapFunction<Object, Void> CONSOLE_SINK_FN = new Function.MapFunction<Object, Void>()
  {
    @Override
    public Void f(Object input)
    {
      PrintStream out = System.out;
      out.println(input);
      return null;
    }
  };
}
