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package code {
package lib {
import net.liftweb._
import http._
import util._
import common._
import _root_.java.util.Date
/**
* 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
}
}
}
*/
}
}
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