Package net.rubyeye.xmemcached.command.binary

Source Code of net.rubyeye.xmemcached.command.binary.BinaryAppendPrependCommand

/**
*Copyright [2009-2010] [dennis zhuang(killme2008@gmail.com)]
*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
*/
/**
*Copyright [2009-2010] [dennis zhuang(killme2008@gmail.com)]
*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 net.rubyeye.xmemcached.command.binary;

import java.util.concurrent.CountDownLatch;

import net.rubyeye.xmemcached.command.CommandType;
import net.rubyeye.xmemcached.exception.UnknownCommandException;
import net.rubyeye.xmemcached.transcoders.CachedData;
import net.rubyeye.xmemcached.transcoders.Transcoder;

/**
* Binary protocol for append,prepend
*
* @author dennis
*
*/
@SuppressWarnings("unchecked")
public class BinaryAppendPrependCommand extends BaseBinaryCommand {

  public BinaryAppendPrependCommand(String key, byte[] keyBytes,
      CommandType cmdType, CountDownLatch latch, int exp, long cas,
      Object value, boolean noreply, Transcoder transcoder) {
    super(key, keyBytes, cmdType, latch, exp, cas, value, noreply,
        transcoder);
    switch (cmdType) {
    case APPEND:
      this.opCode = noreply ? OpCode.APPEND_QUIETLY : OpCode.APPEND;
      break;
    case PREPEND:
      this.opCode = noreply ? OpCode.PREPEND_QUIETLY : OpCode.PREPEND;
      break;
    default:
      throw new UnknownCommandException(
          "Not a append or prepend command:" + cmdType.name());
    }
  }

  @Override
  protected void fillExtras(CachedData data) {
    // no extras
  }

  @Override
  protected byte getExtrasLength() {
    return 0;
  }

}
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