pyc-website

DependencyFactory.scala

(1348B)

 package inc.pyc
 package lib
 
 import java.util.Date
 
 import net.liftweb._
 import http._
 import util._
 import common._
 
 /**
  * A factory for generating new instances of Date.  You can create
  * factories for each kind of thing you want to vend in your application.
  * An example is a payment gateway.  You can change the default implementation,
  * or override the default implementation on a session, request or current call
  * stack basis.
  */
 object DependencyFactory extends Factory {
   implicit object time extends FactoryMaker(Helpers.now _)
 
   /**
    * objects in Scala are lazily created.  The init()
    * method creates a List of all the objects.  This
    * results in all the objects getting initialized and
    * registering their types with the dependency injector
    */
   private def init() {
     List(time)
   }
   init()
 }
 
 /*
 /**
  * Examples of changing the implementation
  */
 sealed abstract class Changer {
   def changeDefaultImplementation() {
     DependencyFactory.time.default.set(() => new Date())
   }
 
   def changeSessionImplementation() {
     DependencyFactory.time.session.set(() => new Date())
   }
 
   def changeRequestImplementation() {
     DependencyFactory.time.request.set(() => new Date())
   }
 
   def changeJustForCall(d: Date) {
     DependencyFactory.time.doWith(d) {
       // perform some calculations here
     }
   }
 }
 */