lazily loaded table structure?

[Jan Torben Heuer]

Hi,

I want to display a table structure, however the data retrieving takes a 
certain time. Currently I use the AjaxLazyLoadPanel to display all results 
at once.

But in future I'd like to to immediately display it on the page when it is 
retrieved. So I need some kind of table where I can add rows via Ajax *AND* 
reorder the items (because they are not retrieved in the final order).

Do you know of any components that can be helpful for this task?


Thanks,

Jan



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Re: Application scope vs Singleton

[Jan Torben Heuer]

Alfredo Aleandri wrote:

> I have a doubt about application-scoped objects.
> What's the pro and cons of setting an object instance into my
> WebApplication class or define that class as singleton (using a static
> method to access it) ?

Pro: Singletons are easy to use
Contra: They make Unit tests and re-usability difficult.

I personally use dependency-injection with wicket-guice.

Jan



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Re: Wicket-Guice: Inject into Session

[Jan Torben Heuer]

Jeremy Thomerson wrote:

> You shouldn't be using database connections.  Use a service from your
> service layer.  Inject the service with wicket-ioc / wicket-guice - it
> will insert a serializable proxy.

It is a controller class that hides the database implementation details and 
it is injected by guice. It is not a connection in terms of a tcp connection 
to a mysql database or alike.

Cheers,

Jan



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Re: Wicket-Guice: Inject into Session

[Jan Torben Heuer]

Marc Ende wrote:

> webapps do. In this case you've got to serialize the connection. I don't
> think that's easy/possible to seralize a database connection.
> I would go another approach which uses the session only as a
> information-container and get those needed information from the
> database in the page-lifecycle. That keeps the session-object small
> (which is also an aspect).

Hmm, following your argumentation, would you say that the 
AuthenticatedWebSession is implemented wrong because it contains a 
#authenticate method (which clearly needs a reference to some kind of 
database)?

Or would marking the field as "transient" be fine?


Cheers,

Jan



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Wicket-Guice: Inject into Session

[Jan Torben Heuer]

Hi,

I'm a Wicket and Guice beginner. I successfully managed Guice to Inject my 
dependency into a WebPage. Can Guice also inject the dependency into an 
AuthenticatedWebSession? I'd need a reference to my database in the 
#authenticate(String, String) method.

Jan



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Register -> activate account -> login

[Jan Torben Heuer]

Hi,


Is there a component that handles user registration, email verification 
(account activation) and login stuff?

I currently use the classes
org.apache.wicket.authentication.AuthenticatedWebApplication;
org.apache.wicket.authentication.AuthenticatedWebSession;
org.apache.wicket.authentication.panel.SignInPanel.SignInPanel
which work well in my project.

Thanks,

Jan



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