content: /*
   * Copyright 1999-2012 Alibaba Group.
   *  
   * 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 com.alibaba.cobar.jdbc.packet;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import com.alibaba.cobar.jdbc.util.MySQLMessage;
  
  /**
   * From server to client. One packet for each row in the result set.
   * 
   * <pre>
   * Bytes                   Name
   * -----                   ----
   * n (Length Coded String) (column value)
   * ...
   * 
   * (column value):         The data in the column, as a character string.
   *                         If a column is defined as non-character, the
   *                         server converts the value into a character
   *                         before sending it. Since the value is a Length
   *                         Coded String, a NULL can be represented with a
   *                         single byte containing 251(see the description
   *                         of Length Coded Strings in section "Elements" above).
   * 
   * @see http://forge.mysql.com/wiki/MySQL_Internals_ClientServer_Protocol#Row_Data_Packet
   * </pre>
   * 
   * @author xianmao.hexm 2010-7-23 上午01:05:55
   */
  public class RowDataPacket extends MySQLPacket {
  
      public final int fieldCount;
      public final List<byte[]> fieldValues;
  
      public RowDataPacket(int fieldCount) {
          this.fieldCount = fieldCount;
          this.fieldValues = new ArrayList<byte[]>(fieldCount);
      }
  
      public void read(BinaryPacket data) {
          packetLength = data.packetLength;
          packetId = data.packetId;
          MySQLMessage mm = new MySQLMessage(data.value);
          for (int i = 0; i < fieldCount; i++) {
              fieldValues.add(mm.readBytesWithLength());
          }
      }
  
      @Override
      protected String packetInfo() {
          return "MySQL RowData Packet";
      }
  
  }
  