Hi Christian,
I think you should not use use the static modifier with this, instead use:
@SpringBean
private ArticleRepository repos;
This should work fine and you can use it inside your constructor.
Static does not add anything useful in this case, as its already a
singleton in Spring.
Martijn
On Sat, Feb 28, 2009 at 4:49 PM, Christian Helmbold
<christian.helmb...@yahoo.de> wrote:
> A page in my Wicket app has a contructor which should access an injected
> repository, but the repository is injected not until construction is
> complete..
>
> public class ArticlePage extends WebPage
> {
> �...@springbean
> private static ArticleRepository repository; // initialized after
> construction!
> private Article article;
>
> public ArticlePage()
> {
> this(repository.findByName("index")); // NullPointerException here
> }
>
> public ArticlePage(Article article)
> {
> add(new Label("name", new PropertyModel(article, "name")));
> add(new Label("contentHtml", new PropertyModel(article,
> "contentHtml")));
> add(new Label("revision", new PropertyModel(article, "revision")));
> add(new Label("revisionDate", new PropertyModel(article,
> "revisionDate")));
> add(new Label("author", new PropertyModel(article, "author")));
> }
>
> }
>
> This code looks for the default page in a database an passes it to the real
> constructor. But this is only a footnote because the problem is more general.
>
> How do I access injected objects within a constructor? When I try to access
> "repository" I get a NullPointerException because this field is initialized
> after construction. The reason is that the Spring integration in Wicket does
> not allow constructor injection.
>
> How can solve this problem? Is Wicket+Spring (or DI in general) really a good
> combination? It seems again and again improper to me.
>
> Thanks for help!
>
> Christian
>
> --
> http://www.groovy-forum.de
>
>
>
>
>
>
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