Packet.java

/**
 * Copyright 2012 Ronen Hamias, Anton Kharenko
 *
 * 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 io.scalecube.socketio.packets;

import io.netty.buffer.ByteBuf;

public class Packet extends AbstractPacket {

  public static final Packet NULL_INSTANCE = new Packet(null);

  private ByteBuf data;
  private int sequenceNumber = 0;

  public Packet(final PacketType type) {
    super(type);
  }

  public Packet(final PacketType type, final String sessionId) {
    super(type, sessionId);
  }

  public void setData(final ByteBuf data) {
    this.data = data;
  }

  public final ByteBuf getData() {
    return data;
  }

  /**
   * The order number of packet in packets frame. In case if packet wasn't in
   * packet frame then it will return 0.
   */
  public int getSequenceNumber() {
    return sequenceNumber;
  }

  public void setSequenceNumber(int sequenceNumber) {
    this.sequenceNumber = sequenceNumber;
  }

  @Override
  public String toString() {
    return "Packet [" + super.toString() + ", data=" + data + "]";
  }

}