DataModel not made available as a context variable
Hi,
I'm a newbie with Seam, but I've been having trouble with the DataModel annotation. I'm not sure if it's a configuration problem, but I've used the messages example in JBoss Seam 1.0.1 GA as a baseline for my configuration (took many of the configuration values and jars from there). I'm trying to upgrade a web app that currently runs on MyFaces 1.1.2, Tomahawk 1.1.2, and Tomcat 5.5.15. I'm also using Tiles - in particular, with Tiles Support from Tomahawk.
I haven't done anything fancy yet - I've just tried to modify a simple existing page. Here's a snippet of code which I'm having problems with:
@Stateful
@Scope(ScopeType.SESSION)
@Name("statusData")
public class StatusBean implements StatusLocal {
@In
private Context sessionContext;
@DataModel
private List status;
@Factory("status")
private void retrieveStatus() {
// Bus. logic code - sets status...
}
@Remove @Destroy
public void destroy() {
}
}The interface only lists the destroy method...
@Local
public interface StatusLocal {
public void destroy();
}My JSP code attempts to get the DataModel from here...
<h:dataTable value="#{status}" var="varStatus"...However, I get errors stating that it cannot evaluate the expression:
ServletException ... .... Cannot get value for expression: #{status}When I debug in Eclipse, I notice that the StatusBean class is never even instantiated. Normally, one would think that there is a configuration problem. However, if I change the bean code to:
@Stateful
@Scope(ScopeType.SESSION)
@Name("statusData")
public class StatusBean implements StatusLocal {
@In
private Context sessionContext;
private List myStatus = new ArrayList();
public List getMyStatus() {
return myStatus;
}
@Remove @Destroy
public void destroy() {
}
}and for the interface code is:
@Local
public interface StatusLocal {
public List getMyStatus();
public void destroy();
}and the JSP is:
<h:dataTable value="#{statusData.myStatus}" var="varStatus"...It works! When I debug from inside Eclipse, I see that the bean is instantiated and the getter is called. I also see that the sessionContext context variable is injected correctly. These two things lead me to believe that my configuration is somewhat correct. I haven't tried any of the other annotations and features of Seam, so I hope things aren't broken there either?
What am I doing wrong here? I would really appreciate any assistance, as I'm pretty much stuck...
BTW, the messages example works within Tomcat 5.5.15 and if I replace the MyFaces 1.1.3 libs with MyFaces 1.1.2 libs within the messages example, it still works...
