br.com.objectos.dhcp.Option999NotInplemented Maven / Gradle / Ivy

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/*
 * Copyright 2016 Objectos, Fábrica de Software LTDA.
 *
 * Licensed 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 br.com.objectos.dhcp;

import java.nio.ByteBuffer;
import java.util.HashMap;
import java.util.Map;

import br.com.objectos.net.NetByteArray;

/**
 * @author [email protected] (Marcio Endo)
 */
class Option999NotInplemented extends Option {

  private static final Map CACHE = new HashMap<>(); // ConcurrentHM?

  private final int tag;

  private Option999NotInplemented(int tag) {
    this.tag = tag;
  }

  public static Option999NotInplemented of(int tag) {
    return CACHE.computeIfAbsent(tag, Option999NotInplemented::new);
  }

  @Override
  public int tag() {
    return tag;
  }

  @Override
  NetByteArray read(ByteBuffer buffer, int length) {
    return NetByteArray.read(buffer, length);
  }

  @Override
  NetByteArray value(ConfiguredAdapter adapter) {
    return null;
  }

}