common/src/java/org/apache/hadoop/io/serializer/LegacySerializer.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.hadoop.io.serializer;

import java.io.IOException;
import java.io.OutputStream;
import java.util.Collections;
import java.util.Map;

@SuppressWarnings("deprecation")
class LegacySerializer<T> extends SerializerBase<T> {
  
  private Serializer<T> serializer;

  public LegacySerializer(Serializer<T> serializer) {
    this.serializer = serializer;
  }

  @Override
  public void open(OutputStream out) throws IOException {
    serializer.open(out);
  }

  @Override
  public void serialize(T t) throws IOException {
    serializer.serialize(t);
  }

  @Override
  public void close() throws IOException {
    serializer.close();
  }

  @Override
  public Map<String, String> getMetadata() throws IOException {
    return Collections.<String, String>emptyMap();
  }

}