Scala example source code file (Serializer.scala)

This example Scala source code file (Serializer.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

actor, anyref, array, connection, datainputstream, dataoutputstream, for, guide, nullpointerexception, serializer, service

The Serializer.scala Scala example source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2005-2013, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */



package scala.actors
package remote


import java.lang.ClassNotFoundException

import java.io.{DataInputStream, DataOutputStream, EOFException, IOException}

@deprecated("Use the akka.actor package instead. For migration from the scala.actors package refer to the Actors Migration Guide.", "2.11.0")
abstract class Serializer(val service: Service) {
  def serialize(o: AnyRef): Array[Byte]
  def deserialize(a: Array[Byte]): AnyRef

  @throws(classOf[IOException])
  private def readBytes(inputStream: DataInputStream): Array[Byte] = {
    try {
      val length = inputStream.readInt()
      val bytes = new Array[Byte](length)
      inputStream.readFully(bytes, 0, length)
      bytes
    }
    catch {
      case npe: NullPointerException =>
        throw new EOFException("Connection closed.")
    }
  }

  @throws(classOf[IOException]) @throws(classOf[ClassNotFoundException])
  def readObject(inputStream: DataInputStream): AnyRef = {
    val bytes = readBytes(inputStream)
    deserialize(bytes)
  }

  @throws(classOf[IOException])
  private def writeBytes(outputStream: DataOutputStream, bytes: Array[Byte]) {
    val length = bytes.length;
    // original length
    outputStream.writeInt(length)
    outputStream.write(bytes, 0, length)
    outputStream.flush()
  }

  @throws(classOf[IOException])
  def writeObject(outputStream: DataOutputStream, obj: AnyRef) {
    val bytes = serialize(obj)
    writeBytes(outputStream, bytes)
  }
}