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Lift Framework example source code file (UUIDField.scala)

This example Lift Framework source code file (UUIDField.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

box, failure, full, full, jnothing, jobject, jvalue, jvalue, ownertype, some, string, string, util, uuid, uuid

The Lift Framework UUIDField.scala source code

* Copyright 2010-2011 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,
* See the License for the specific language governing permissions and
* limitations under the License.

package net.liftweb 
package mongodb 
package record 
package field 

import java.util.UUID

import scala.xml.NodeSeq

import net.liftweb.common.{Box, Empty, Failure, Full}
import net.liftweb.http.js.JE.{JsNull, JsRaw}
import net.liftweb.http.S
import net.liftweb.json.JsonAST._
import net.liftweb.json.Printer
import net.liftweb.mongodb.record._
import net.liftweb.record.{Field, FieldHelpers, MandatoryTypedField}
import net.liftweb.util.Helpers._

class UUIDField[OwnerType <: BsonRecord[OwnerType]](rec: OwnerType)
  extends Field[UUID, OwnerType]
  with MandatoryTypedField[UUID]

  def owner = rec

  def defaultValue = UUID.randomUUID

  def setFromAny(in: Any): Box[UUID] = in match {
    case uid: UUID => setBox(Full(uid))
    case Some(uid: UUID) => setBox(Full(uid))
    case Full(uid: UUID) => setBox(Full(uid))
    case (uid: UUID) :: _ => setBox(Full(uid))
    case s: String => setFromString(s)
    case Some(s: String) => setFromString(s)
    case Full(s: String) => setFromString(s)
    case null|None|Empty => setBox(defaultValueBox)
    case f: Failure => setBox(f)
    case o => setFromString(o.toString)

  def setFromJValue(jvalue: JValue): Box[UUID] = jvalue match {
    case JNothing|JNull if optional_? => setBox(Empty)
    case JObject(JField("$uuid", JString(s)) :: Nil) => setFromString(s)
    case other => setBox(FieldHelpers.expectedA("JObject", other))

  def setFromString(in: String): Box[UUID] = tryo(UUID.fromString(in)) match {
    case Full(uid: UUID) => setBox(Full(uid))
    case f: Failure => setBox(f)
    case other => setBox(Failure("Invalid UUID string: "+in))

  private def elem =
    S.fmapFunc(S.SFuncHolder(this.setFromAny(_))){funcName =>
      <input type="text"
        value={valueBox.map(v => v.toString) openOr ""}
        tabindex={tabIndex toString}/>

  def toForm =
    uniqueFieldId match {
      case Full(id) => Full(elem % ("id" -> id))
      case _ => Full(elem)

  def asJs = asJValue match {
    case JNothing => JsNull
    case jv => JsRaw(Printer.compact(render(jv)))

  def asJValue: JValue = valueBox.map(v => Meta.uuidAsJValue(v)) openOr (JNothing: JValue)


Other Lift Framework examples (source code examples)

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

my book on functional programming


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