[jboss-user] [JBoss Portal] - Re: JSF Portlet tutorial out of date?

[desropolis]

Here's the code from MyFaces...
http://svn.apache.org/repos/asf/myfaces/core/trunk/api/src/main/java/javax/faces/FactoryFinder.java

                // check, if class is of expected interface type
                if (!interfaceClass.isAssignableFrom(implClass))
                {
                    throw new IllegalArgumentException("Class " + implClassName + " is no " + interfaceClass.getName());
                }

Now let's find out why class.isAssignableFrom(class) returns false...
http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html

OK it is because it doesn't think that the SeamApplicationFactoryClass passed in is a subclass of the ApplicationFactory that was passed in.

You've been at this a couple days.  This may sound nuts, but you could try to write a class that loads the SeamApplicationFactory and the MyFaces one and call isAssignableFrom.  Put the code in a main method.  

When you execute the class you'll also know exactly the classpath is set up because you will have set it up on the command line (-cp switch).  

If it works in your little harness, then you know there is a weird classloader issue in JBoss.  If it doesn't work in your harness, you'll also be able to swap out MyFaces jars easily and see which version works.

This may seem like a lot of work, but as I said, you've been at it two days already, and sometimes these exercises uncover... shall we say... "user errors."   You know, the kind that you'll be embarrassed to tell me :)

Good luck.  I'll be out the rest of the day.

View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4070115#4070115

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4070115