trunk/core/src/main/scala/kafka/serializer/Decoder.scala

/**
 * 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 kafka.serializer

import kafka.message.Message

trait Decoder[T] {
  def toEvent(message: Message):T
}

class DefaultDecoder extends Decoder[Message] {
  def toEvent(message: Message):Message = message
}

class StringDecoder extends Decoder[String] {
  def toEvent(message: Message):String = {
    val buf = message.payload
    val arr = new Array[Byte](buf.remaining)
    buf.get(arr)
    new String(arr)
  }
}