Lift Framework example source code file (FieldSerializerExamples.scala)

This example Lift Framework source code file (FieldSerializerExamples.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 - Lift Framework tags/keywords

all, defaultformats, defaultformats, fieldserializer, fieldserializer, int, mammal, mammal, owner, selects, string, string, wildcat, wilddog

The Lift Framework FieldSerializerExamples.scala source code

/*
 * Copyright 2009-2011 WorldWide Conferencing, LLC
 *
 * 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.liftweb
package json

import org.specs.Specification

object FieldSerializerExamples extends Specification {  
  import Serialization.{read, write => swrite}
  import FieldSerializer._

  val dog = new WildDog("black")
  dog.name = "pluto"
  dog.owner = Owner("joe", 35)

  val cat = new WildCat(100)
  cat.name = "tommy"

  "All fields are serialized by default" in {
    implicit val formats = DefaultFormats + FieldSerializer[WildDog]()
    val ser = swrite(dog)
    val dog2 = read[WildDog](ser) 
    dog2.name mustEqual dog.name
    dog2.color mustEqual dog.color
    dog2.owner mustEqual dog.owner
    dog2.size mustEqual dog.size
  }

  "Fields can be ignored and renamed" in {
    val dogSerializer = FieldSerializer[WildDog](
      renameTo("name", "animalname") orElse ignore("owner"),
      renameFrom("animalname", "name")
    )

    implicit val formats = DefaultFormats + dogSerializer

    val ser = swrite(dog)
    val dog2 = read[WildDog](ser) 
    dog2.name mustEqual dog.name
    dog2.color mustEqual dog.color
    dog2.owner must beNull
    dog2.size mustEqual dog.size
    (parse(ser) \ "animalname") mustEqual JString("pluto")
  }

  "Selects best matching serializer" in {
    val dogSerializer = FieldSerializer[WildDog](ignore("name"))
    implicit val formats = DefaultFormats + FieldSerializer[AnyRef]() + dogSerializer

    val dog2 = read[WildDog](swrite(dog))
    val cat2 = read[WildCat](swrite(cat))

    dog2.name mustEqual ""
    cat2.name mustEqual "tommy"
  }
}

abstract class Mammal {
  var name: String = ""
  var owner: Owner = null
  val size = List(10, 15)
}

class WildDog(val color: String) extends Mammal
class WildCat(val cuteness: Int) extends Mammal

case class Owner(name: String, age: Int)