Hi Klaus
Take a look at
http://tapestry.apache.org/tapestry5/tapestry-core/guide/coercion.html:
"Type coercions occur when a value passed into a parameter (as bound
in template or in an annotation) does not match the type of the
parameter." The exception message indicates that the TypeCoercer Service
is making
use of the coercion strategies at its disposal. The doco elsewhere says
you can extend
the TypeCoercer service but this is outside my experience as yet so
somebody else will
have to help you there.
If your webshops.pages.article.ArticleList does not implement the Page
interface then it cannot be cast/coerced in the way you have indicated in
your implementation for Component: ArticleSearch.java.
For a quick fix you might try using Object rather than Page:
Component: ArticleSearch.java
[code]
....
@Parameter(required=true)
private Object nextPage;
public Object onSuccess() {
...
return nextPage;
}
[/code]
J.
Klaus wrote:
> Hi!
>
> I have a problem passing a page into a component. Its quite simple... The
> component contains a form, which is responsible for the navigation (it
> returns a Page by the onSuccess-Method). To allow further customization I
> want to pass the page to the component by a parameter (e.g. nextPage). I can
> run the page without problems, but if i successfully submit the form (->
> call the onSuccess-Method) a java.lang.IllegalArgumentException is thrown.
> (Could not find a coercion from type webshops.pages.article.ArticleList to
> type org.apache.tapestry.internal.structure.Page. Available coercions:
> Double --> Float, Float --> Double, ...)
>
> A few pices of code might be helpful:
>
> Component: ArticleSearch.java
> [code]
> ....
> @Parameter(required=true)
> private Page nextPage;
>
> public Page onSuccess() {
> ...
> return nextPage;
> }
> [/code]
>
> Implementation of the Component: ArticleSearchImpl.java
> [code]
> @InjectPage
> private ArticleList articleList;
>
> @Component(parameters={"nextPage=articleList"})
> private com.poi.egh.webshops.components.article.ArticleSearch articleSearch;
>
> public ArticleMaintenanceLayout getArticleMaintenanceLayout()
> {
> return articleMaintenanceLayout;
> }
>
> public ArticleList getArticleList()
> {
> return articleList;
> }
> [/code]
>
> I have no idea why this doesnt work.....
> klaus
>
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