You should be seeing some logged console messages about private variables.
Only private instance variables may have annotations on them; yours is
"package private" not private.
On 5/4/07, Michael Maier <[EMAIL PROTECTED]> wrote:
Hi List,
I'm trying to inject via @Inject annotation a service (internal
service RequestPageCache) into a component:
public class Menu {
@Inject("RequestPageCache")
RequestPageCache requestPageCache;
public String getPageName() {
ComponentResources pageResources= resources.getPage
().getComponentResources();
String pageClassName= pageResources.getCompleteId();
Page page= requestPageCache.getByClassName(pageClassName);
return page.getName();
}
}
so...while rendering the page with the menu component
<div id="leftside">
<div id="menu">
<ul>
<li>
${pageName}
</li>
</ul>
</div>
</div>
a null pointer exception occures, because "requestPageCache" is null.
What is getting wrong? Is RequestPageCache not injectable?
What I want: I just try to get the page of the component. Then the
menu component should highlight by providing a special css-class the
corresponding menu item of the <ul><li>-list for the active page.
Therefore the menu component must know the current page that is
rendered. In Tapestry 3 is just call the method getPage of the
component. Now every component has no parent class...
While we are talking about injection: the docs are a little bit
confusing:
@Inject
@Service("xxx") (which did not work with 5.0.3, because Service
annotation does not exist)
or
@Inject("xxx")
or
@Inject( "service:xxx" ) (what kind of prefixes (service:) exists and
what meaning have they?)
sometimes:
@Inject ("alias:request" )...is there somewhere a list with all
objects that are able to be injected from tapestry-core?
thanks for any help
cheers
Michael
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--
Howard M. Lewis Ship
TWD Consulting, Inc.
Independent J2EE / Open-Source Java Consultant
Creator and PMC Chair, Apache Tapestry
Creator, Apache HiveMind
Professional Tapestry training, mentoring, support
and project work. http://howardlewisship.com
