engine/src/main/java/com/datatorrent/stram/util/ExternalizableConf.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 com.datatorrent.stram.util;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

import org.apache.hadoop.conf.Configuration;

/**
 * <p>ExternalizableConf class.</p>
 *
 * @since 0.3.2
 */
public class ExternalizableConf implements Externalizable
{
  private final Configuration conf;

  public ExternalizableConf(Configuration conf)
  {
    this.conf = conf;
  }

  public ExternalizableConf()
  {
    this.conf = new Configuration(false);
  }

  @Override
  public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
  {
    conf.readFields(in);
  }

  @Override
  public void writeExternal(ObjectOutput out) throws IOException
  {
    conf.write(out);
  }
}