Scala example source code file (JavaSerializer.scala)

This example Scala source code file (JavaSerializer.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

anyref, anyref, array, array, class, classloader, classnotfoundexception, customobjectinputstream, customobjectinputstream, inputstream, io, objectinputstream, objectinputstream, objectoutputstream, objectstreamclass

The Scala JavaSerializer.scala source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2005-2011, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */


package scala.actors
package remote

import java.io.{ByteArrayInputStream, ByteArrayOutputStream,
                ObjectInputStream, ObjectOutputStream, InputStream,
                ObjectStreamClass}

/**
 *  @author Guy Oliver
 */
private[remote] class CustomObjectInputStream(in: InputStream, cl: ClassLoader)
extends ObjectInputStream(in) {
  override def resolveClass(cd: ObjectStreamClass): Class[_] =
    try {
      cl.loadClass(cd.getName())
    } catch {
      case cnf: ClassNotFoundException =>
        super.resolveClass(cd)
    }
  override def resolveProxyClass(interfaces: Array[String]): Class[_] =
    try {
      val ifaces = interfaces map { iface => cl.loadClass(iface) }
      java.lang.reflect.Proxy.getProxyClass(cl, ifaces: _*)
    } catch {
      case e: ClassNotFoundException =>
        super.resolveProxyClass(interfaces)
    }
}

/**
 *  @author Philipp Haller
 */
class JavaSerializer(serv: Service, cl: ClassLoader) extends Serializer(serv) {
  def serialize(o: AnyRef): Array[Byte] = {
    val bos = new ByteArrayOutputStream()
    val out = new ObjectOutputStream(bos)
    out.writeObject(o)
    out.flush()
    bos.toByteArray()
  }

  def deserialize(bytes: Array[Byte]): AnyRef = {
    val bis = new ByteArrayInputStream(bytes)

    // use custom stream only if cl != null
    val in = if (cl != null)
      new CustomObjectInputStream(bis, cl)
    else
      new ObjectInputStream(bis)

    in.readObject()
  }
}