Re: Scala, dependency injection and wicket
I agree on Jeremy on this one. I actually don't know much about ajax (migth be an understatement), but with wicket I've been able todo alot of ajax integrations. Heres something to read (if you want to know the inner workings): http://ninomartinez.wordpress.com/2008/09/09/apache-wicket-javascript-integration/ http://blog.jayway.com/2008/09/26/wicket-javascript-internals-dissected/ Otherwise just see the examples and see how easy it are todo ajax with wicket: http://wicketstuff.org/wicket14/ajax/ regards Nino 2009/11/10 Jeremy Thomerson jer...@wickettraining.com On Tue, Nov 10, 2009 at 12:42 PM, Ashley Aitken mrhat...@mac.com wrote: On 08/10/2009, at 4:42 AM, Alex Rass wrote: And so far: ajax is a pain in the ass that requires explicit work even for a simple form verification (bad architecture there). Is this true? One of my attractions to Wicket was that, hopefully, AJAX was easy (or at least easier) than other frameworks. No - it's not true. AJAX is simpler in Wicket than I've seen in ANY other application framework. You just have to know how to use it. It's also very easy to do custom AJAX things in Wicket. -- Jeremy Thomerson http://www.wickettraining.com
Re: Scala, dependency injection and wicket
On 08/10/2009, at 4:42 AM, Alex Rass wrote: And so far: ajax is a pain in the ass that requires explicit work even for a simple form verification (bad architecture there). Is this true? One of my attractions to Wicket was that, hopefully, AJAX was easy (or at least easier) than other frameworks. And this other problem with url formation. What is that problem exactly? Thanks, Ashley. -- Ashley Aitken Perth, Western Australia mrhatken at mac dot com Skype Name: MrHatken (GMT + 8 Hours!) - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Scala, dependency injection and wicket
On Tue, Nov 10, 2009 at 12:42 PM, Ashley Aitken mrhat...@mac.com wrote: On 08/10/2009, at 4:42 AM, Alex Rass wrote: And so far: ajax is a pain in the ass that requires explicit work even for a simple form verification (bad architecture there). Is this true? One of my attractions to Wicket was that, hopefully, AJAX was easy (or at least easier) than other frameworks. No - it's not true. AJAX is simpler in Wicket than I've seen in ANY other application framework. You just have to know how to use it. It's also very easy to do custom AJAX things in Wicket. -- Jeremy Thomerson http://www.wickettraining.com
Re: Scala, dependency injection and wicket
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Hash: SHA1
Hi jan,
On Oct 8, 2009, at 6:47 AM, Jan Kriesten wrote:
Hi Haim,
Yes, I remember seeing that. How would you add it to wicket? by
adding
ServiceInjector trait to the Application class or using the wicket-
guice way
(addComponentInstantiationListener(new
GuiceComponentInjector(this));)?
the Injector is just a trait, so anywhere it's needed, I just add it
to the
corresponding class - whether it's a Wicket component or not doesn't
matter. So
you have
class MyWebPage extends WebPage with Injector {
@Inject val domainRepo: DomainRepo = domainRepo
}
class DomainRepo extends Repo with Injector {
@Inject val customerRepo: CustomerRep = customerRepo
}
This is a general approach, so no need to add a intantiation listener.
I've started testing this approach and I'm a little stuck. I can
easily inject objects like that for running the application, but how
do I inject mock objects for testing? The module used by the injector
(in the article's example) is hard-coded into the InjectorService
object.
Thanks
- --
Haim
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Re: Scala, dependency injection and wicket
Hi, I've started testing this approach and I'm a little stuck. I can easily inject objects like that for running the application, but how do I inject mock objects for testing? The module used by the injector (in the article's example) is hard-coded into the InjectorService object. you could use modules depending on environment settings e.g. Shouldn't be too hard. --- Jan. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Scala, dependency injection and wicket
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi On Oct 12, 2009, at 10:01 AM, Jan Kriesten wrote: Hi, I've started testing this approach and I'm a little stuck. I can easily inject objects like that for running the application, but how do I inject mock objects for testing? The module used by the injector (in the article's example) is hard-coded into the InjectorService object. you could use modules depending on environment settings e.g. Shouldn't be too hard. I'll try it :) Thanks - -- Haim -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAkrS5cUACgkQhwMtGgRKzT29DwCfY5FlXHzWZHMmA66ZPqwKR0zg Jd8AoIyFntvM+UAI+0DTOuwEt1oa3juu =bzB0 -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Scala, dependency injection and wicket
Hi jan,
On Oct 8, 2009, at 6:47 AM, Jan Kriesten wrote:
Hi Haim,
Yes, I remember seeing that. How would you add it to wicket? by
adding
ServiceInjector trait to the Application class or using the wicket-
guice way
(addComponentInstantiationListener(new
GuiceComponentInjector(this));)?
the Injector is just a trait, so anywhere it's needed, I just add it
to the
corresponding class - whether it's a Wicket component or not doesn't
matter. So
you have
class MyWebPage extends WebPage with Injector {
@Inject val domainRepo: DomainRepo = domainRepo
}
class DomainRepo extends Repo with Injector {
@Inject val customerRepo: CustomerRep = customerRepo
}
This is a general approach, so no need to add a intantiation listener.
This is an interesting approach. From what I remember from guice, you
can use it to overcome the problem of having to start all your object
by injection (classes that initiated by new can not use the injector
anymore). But does it preserve the ability to know at startup if all
your injections are resolved?
BTW, to test it I need to supply a custom Module since I can not
invoke the class without injection. am I right?
One more question though, In the example you're only using
constructor
injection. Any reason not to use field injection?
Actually, I use field injection most of the time, see above.
Best regards, --- Jan.
One more question about injections in wicket. How can I handle the
session object. Do I have to use the getSession method, or can I
inject the session object as well?
Thanks for your help
--
Haim
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Re: Scala, dependency injection and wicket
Hi Haim, I think you read the article from Jonas Bonér about DI with Scala [1]? In the paragraph about Guice you'll stumble over my name and my preferred way to DI with Wicket. Best regards, --- Jan. [1] http://jonasboner.com/2008/10/06/real-world-scala-dependency-injection-di.html - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Scala, dependency injection and wicket
Hi Jan, On Wed, Oct 7, 2009 at 4:59 PM, Jan Kriesten kries...@mail.footprint.dewrote: Hi Haim, I think you read the article from Jonas Bonér about DI with Scala [1]? yes of course :) In the paragraph about Guice you'll stumble over my name and my preferred way to DI with Wicket. Yes, I remember seeing that. How would you add it to wicket? by adding ServiceInjector trait to the Application class or using the wicket-guice way (addComponentInstantiationListener(new GuiceComponentInjector(this));)? One more question though, In the example you're only using constructor injection. Any reason not to use field injection? In java the reason is to allow final variables, but I think I read somewhere that in scala you can inject to lazy vals. Thanks for the help -- Haim
RE: Scala, dependency injection and wicket
This is similar problem to one I'm trying to solve. Mine's: having several html files have the same java class controlling them. (sounds simple, right?) So far the only reasonable thing came from Martin and that's to override getAssociatedMarkupStream in your own Page class. Which also implies rewriting cache useage etc. Wanna do it together or smth? I'm new to wicket myself. And so far: ajax is a pain in the ass that requires explicit work even for a simple form verification (bad architecture there). And this other problem with url formation. Just hoping they didn't go nuts making stuff final, like apache usually does ;) -Original Message- From: Haim Ashkenazi [mailto:haim.ashken...@gmail.com] Sent: Wednesday, October 07, 2009 10:51 AM To: users@wicket.apache.org Subject: Scala, dependency injection and wicket Hi I've started a test project on which I use scala, wicket and couchdb (I'm new to all of them, which should make it fun :) ). Until now I was dealing with the writing sample data access code, and I was reading a lot of articles about DI in scala. I more or less went with what is suggested in the Programing in scala book, that is using traits with self type annotations and lazy vals (for calling modules). It's very easy to construct object/classes for testing this way. Now I reached the web part (wicket) and I came to a problem. In wicket the class name *has* to match the html file (e.g. package/HomePage.html must have a corresponding package.HomePage.class). This makes it (I think) impossible to use the above method for DI. One solution is to use DI framework like guice, but I was wondering if someone hear has other idea? Thanks in advance -- Haim - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Scala, dependency injection and wicket
Hi Alex, Wow, I just realized something... I've sent this to the wrong list :) I've meant to send it to the scala mailing list (this may explain why I explain the way wicket works). On Wed, Oct 7, 2009 at 10:42 PM, Alex Rass a...@itbsllc.com wrote: This is similar problem to one I'm trying to solve. Mine's: having several html files have the same java class controlling them. (sounds simple, right?) I remember this thread :) So far the only reasonable thing came from Martin and that's to override getAssociatedMarkupStream in your own Page class. Which also implies rewriting cache useage etc. Wanna do it together or smth? Actually this is not much of a problem for me. I just wanted to know if I overlook something. I perfectly willing to use guice. Thanks -- Haim
Re: Scala, dependency injection and wicket
Hi Haim,
Yes, I remember seeing that. How would you add it to wicket? by adding
ServiceInjector trait to the Application class or using the wicket-guice way
(addComponentInstantiationListener(new GuiceComponentInjector(this));)?
the Injector is just a trait, so anywhere it's needed, I just add it to the
corresponding class - whether it's a Wicket component or not doesn't matter. So
you have
class MyWebPage extends WebPage with Injector {
@Inject val domainRepo: DomainRepo = domainRepo
}
class DomainRepo extends Repo with Injector {
@Inject val customerRepo: CustomerRep = customerRepo
}
This is a general approach, so no need to add a intantiation listener.
One more question though, In the example you're only using constructor
injection. Any reason not to use field injection?
Actually, I use field injection most of the time, see above.
Best regards, --- Jan.
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