home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Lift Framework example source code file (Example.scala)

This example Lift Framework source code file (Example.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

address, address, jsonr, jsonw, manhattan, manhattan, map, nil, parse, person, person, string, string, success

The Lift Framework Example.scala source code

package net.liftweb.json.scalaz

import scalaz._
import Scalaz._
import JsonScalaz._
import net.liftweb.json._

import org.specs.Specification

object Example extends Specification {

  case class Address(street: String, zipCode: String)
  case class Person(name: String, age: Int, address: Address)
  
  "Parse address in an Applicative style" in {
    val json = parse(""" {"street": "Manhattan 2", "zip": "00223" } """)
    val a1 = field[String]("zip")(json) <*> (field[String]("street")(json) map Address.curried)
    val a2 = (field[String]("street")(json) |@| field[String]("zip")(json)) { Address }
    val a3 = Address.applyJSON(field("street"), field("zip"))(json)
    a1 mustEqual Success(Address("Manhattan 2", "00223"))
    a2 mustEqual a1
    a3 mustEqual a1
  }

  "Failed address parsing" in {
    val json = parse(""" {"street": "Manhattan 2", "zip": "00223" } """)
    val a = (field[String]("streets")(json) |@| field[String]("zip")(json)) { Address }
    a.fail.toOption.get.list mustEqual List(NoSuchFieldError("streets", json))
  }

  "Parse Person with Address" in {
    implicit def addrJSON: JSONR[Address] = new JSONR[Address] {
      def read(json: JValue) = Address.applyJSON(field("street"), field("zip"))(json)
    }

    val p = parse(""" {"name":"joe","age":34,"address":{"street": "Manhattan 2", "zip": "00223" }} """)
    val person = Person.applyJSON(field("name"), field("age"), field("address"))(p)
    person mustEqual Success(Person("joe", 34, Address("Manhattan 2", "00223")))
  }

  "Format Person with Address" in {
    implicit def addrJSON: JSONW[Address] = new JSONW[Address] {
      def write(a: Address) = 
        makeObj(("street" -> toJSON(a.street)) :: ("zip" -> toJSON(a.zipCode)) :: Nil)
    }

    val p = Person("joe", 34, Address("Manhattan 2", "00223"))
    val json = makeObj(("name" -> toJSON(p.name)) :: 
                       ("age" -> toJSON(p.age)) :: 
                       ("address" -> toJSON(p.address)) :: Nil)
    json.shows mustEqual 
      """{"name":"joe","age":34,"address":{"street":"Manhattan 2","zip":"00223"}}"""
  }

  "Parse Map" in {
    val json = parse(""" {"street": "Manhattan 2", "zip": "00223" } """)
    fromJSON[Map[String, String]](json) mustEqual Success(Map("street" -> "Manhattan 2", "zip" -> "00223"))
  }

  "Format Map" in {
    toJSON(Map("street" -> "Manhattan 2", "zip" -> "00223")).shows mustEqual
      """{"street":"Manhattan 2","zip":"00223"}"""
  }
}

Other Lift Framework examples (source code examples)

Here is a short list of links related to this Lift Framework Example.scala source code file:



my book on functional programming

 

new blog posts

 

Copyright 1998-2019 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.