My plan was to let the user specify the int at runtime and then pass
it to the module like:
public class Test {
public static void main(String[] args) {
// Get userinput. Path to xml frame.
int userInt = Integer.parseInt(args[0]);
Injector injector = Guice.createInjector(new MyCarModule
(userInt));
CarShop carShop = injector.getInstance(CarShop.class);
}
}
Then in the module I can do:
public class MyCarModule extends AbstractModule {
private int tt;
public MyCarModule(int tt) {
this.tt = tt;
}
@Override
protected void configure() {
bind(Automobile.class).to(Ford.class);
bind(String.class).annotatedWith(Names.named
("LicenseKey")).toInstance(tt);
But is it this how guice is intented to be used (passing external
resources to the module constructor)?
On Jan 14, 11:37 pm, Fred Faber <[email protected]> wrote:
> Where is the value of the int coming from?
>
> If it's known at configure() time, then simply bind it:
>
> bind(int.class).toInstance(60);
>
> most likely you'll need to annotate it:
>
> class Ford implements Automobile {
>
> @Retention(RetentionPolicy.RUNTIME)
> @Target(ElementType.PARAMETER)
> @BindingAnnotation
> @interface ForFord { }
>
> �...@inject
> Ford(@ForFor int maxSpeed) {
> ...
> }
> }
>
> at which point you can use the type converters in guice to do:
>
> bindConstant().annotatedWith(ForFord.class).to(65);
>
> -Fred
>
> On Thu, Jan 14, 2010 at 4:56 PM, motes <[email protected]> wrote:
> > I have this simple class:
>
> > public class Ford implements Automobile {
> > private int maxSpeed;
>
> > public Ford(int speed) {
> > System.out.println("Driving a Ford!");
> > this.maxSpeed = speed;
> > }
>
> > �...@override
> > public int getMaxSpeed() {
> > return maxSpeed;
> > }
>
> > public void printBrand(){
> > System.out.println("Ford");
>
> > }
> > }
>
> > I would like to inject this implementation into the CarShop below:
>
> > public class CarShop {
> > private Automobile car;
> > �...@inject
> > public CarShop(Automobile car) {
> > this.car = car;
> > }
>
> > public void printBrand(){
> > car.printBrand();
> > }
>
> > public void printMaxSpeed(){
> > car.getMaxSpeed();
> > }
> > }
>
> > In my Module I do:
>
> > public class MyCarModule extends AbstractModule {
> > �...@override
> > protected void configure() {
> > bind(Automobile.class).to(Ford.class);
> > }
> > }
>
> > But how do I get the int passed to the constructor in my Ford
> > implementation?
>
> > I have looked at:
>
> >http://code.google.com/docreader/#p=google-guice&s=google-guice&t=Fre...
>
> > but it seems pretty overkill to create a factory or an AssistedInject
> > to pass an int to a constructor.
>
> > Any ideas?
>
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