My Richfaces on Seam Project

[ekusnady]

Hello People..

I have a question and i hope you can help me.

So this is what you see from my eclipse.
On "yuk.xhtml" data, you could see the preview of the tree that supposed to be shown.
[url=http://img188.imageshack.us/i/13632428.jpg/][img=http://img188.imageshack.us/img188/9493/13632428.th.jpg][/url]


And this is its code.

<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:a4j="http://richfaces.org/a4j"
 xmlns:rich="http://richfaces.org/rich">
 <style>
 .col, .col2 {
 width:50%;
 vertical-align:top;
 }
 </style>
 <h:form>
 <h:panelGrid columns="2" width="100%" columnClasses="col1,col2" style=" height : 82px;">
 <rich:tree id="Tree">
 <rich:treeNode style="width:300px" nodeSelectListener="#{simpleTreeBean.processSelection}"
 reRender="selectedNode" ajaxSubmitSelection="true" switchType="client"
 value="Test" var="item" ajaxKeys="#{null}">
 <h:outputText value="Parent Node"/>
 </rich:treeNode>
 <rich:treeNode style="width:300px"
 reRender="selectedNode" ajaxSubmitSelection="true" switchType="client"
 value="Test" var="item" ajaxKeys="#{null}">
 <h:outputText value="Children Node 1"/>
 </rich:treeNode>
 </rich:tree>
 </h:panelGrid>
 </h:form>
</ui:composition>

But when i clicked "Run On Server" with JBoss Server Runtime 4.2,
And type this on my browser :
http://localhost:8080/Seam1/yuk.seam

I couldn't see the result what i saw on the source with my Eclipse.

All i saw on the browser was :
NullPointerException.


What should i do?



Please help me

[ekusnady]

In Addition,

this is the result what i got:


[url=http://img27.imageshack.us/i/48926694.jpg/][img=http://img27.imageshack.us/img27/4431/48926694.jpg][/url]

[ilya_shaikovsky]

rich:tree requires dataModel. You could not define it just with static nodes. check richfaces-demo for samples.

[nbelaevski]

All i saw on the browser was :
NullPointerException.

What should i do?

Check the code throwing this exception by manual sources inspection or by debugging; then resolve the problem.

[ekusnady]

how could i instantiate class that i want to link with my xhtml Data?

Please explain me like you want to explain it to a small kid who never has any experience with programming.

I am totaly new here.

In this tutorial http://livedemo.exadel.com/richfaces-demo/richfaces/tree.jsf?tab=model&cid=1445593, there is no detail steps.
I am just guessing:
1. I make a Seam Web Project on my Eclipse with the target Runtime from JBoss AS 4.2. Runtime and for the configuration i choose : Dynamic Web Project with Seam 2.1 (Technology Preview)

2. on the folder "src/hot" (that eclipse automatically made in my Seam Web project), i add a new normal java class with a default package.
The class is SimpleTreeBean.java

3. After that, i go to WebContent and make a new xhtml data.
I named it yuk.xhtml, in this data, i copied the View Source data which i have seen in http://livedemo.exadel.com/richfaces-demo/richfaces/tree.jsf?tab=model&cid=1445593

4. I click on WEB-INF and i choose faces-config.xml. Here i add a new Managed Beans and for "Managed-Bean-Class" i choose the Java Class "SimpleTreeBean" and for "Managed-Bean-Name" i choose simpleTreeBean


And i thought, that's all i have to do.
Am I right ?

If anyone from you know a very good tutorial where every single steps are written. I would be very glad to have it.
It frustrated me. It's been more than 1 week and i still couldn't make any simple tree with Richfaces.
I only could make Seam Hello World.

I need a help....

Thank u...

[ilya_shaikovsky]

do not use multiple threads for one problem. we can't answer in every one :(

And run our samples from the beggining. It's much easier to start exploration from working code written especially as the kick start for the users.