RF_4.1.0: action and actionListener of <h:commandLink> inside <rich:treeNode>

[pablo53]

Hi!

I have the following piece of code:

<rich:tree id="treeValidations" rendered="#{myBean.showTree}"

           value="#{myBean.myNodes}" var="mynode"

           nodeType="#{mynode.type}" toggleType="client">

    <rich:treeNode type="my.type"

                   iconLeaf="#{resource['images:th_validation.gif']}"

                   iconCollapsed="#{resource['images:th_validation.gif']}"

                   iconExpanded="#{resource['images:th_validation.gif']}">

        <h:commandLink action="#{myBean.doAction}" actionListener="#{myBean.listenAction}">

          click me

        </h:commandLink>

     </rich:treeNode>

     <!-- an so on... -->

</rich:tree>

When I click the link inside the node no action is performed (I mean myBean.doAction and myBean.listenAction are not called). When I mode <h:commandLink> outside the tree everythong seems to work - both methods defined inside the tag are executed.

What am I doing wrong? I would like to undertake some action when user clicks a node. How to do that?

Regards,

Paweł

[sarocks]

Hi,

You can use a4j:commandLink instead of h:commandLink.

It works fine for me!

          <h:form>
            <rich:tree id="tree" nodeType="#{node.type}" var="node"
                value="#{treeBean.rootNodes}" toggleType="client">
                
               <rich:treeNode type="country">
                    <a4j:outputPanel layout="block">
                        <a4j:commandLink value="#{node.name}"
                            action="#{treeBean.actionEvent}"
                            actionListener="#{treeBean.actionListenerEvent}">
                        </a4j:commandLink>
                    </a4j:outputPanel>
                </rich:treeNode>
                
            </rich:tree>
        </h:form>

Thanks.

[raissi]

Hello Saroj,

I am using the same code that you've posted. I obtained the following exception:

Jun 30, 2011 3:10:47 PM org.richfaces.context.ExtendedPartialViewContextImpl processPartialExecutePhase

SEVERE: java.lang.NullPointerException

javax.faces.FacesException: java.lang.NullPointerException

        at org.richfaces.component.UIDataAdaptor.invokeOnComponent(UIDataAdaptor.java:1124)

        at org.richfaces.renderkit.TreeRendererBase.decode(TreeRendererBase.java:208)

        at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:787)

        at org.richfaces.component.UIDataAdaptor.processDecodes(UIDataAdaptor.java:824)

        at javax.faces.component.UIForm.processDecodes(UIForm.java:225)

        at org.richfaces.context.PartialViewExecuteVisitCallback.visit(PartialViewExecuteVisitCallback.java:55)

        at org.richfaces.context.BaseExtendedVisitContext.invokeVisitCallback(BaseExtendedVisitContext.java:337)

        at javax.faces.component.UIForm.visitTree(UIForm.java:354)

        at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600)

Can you help me with this, please .

Thanks.

[sarocks]

Could you upgrade the JSF libraries to latest release!

I am not sure but it may help.

See the link below, end of the page:

http://javaserverfaces.java.net/nonav/rlnotes/2.1.2/migration.html

Disable partial state saving for the application by specifying a context initialization parameter called javax.faces.PARTIAL_STATE_SAVING with a value of false.

[raissi]

Hello again,

Thanks for the response,

It's so weird. In fact, when I ommit the a4j:commandLink, the tree works fine.

I tried your solution (disable state saving), but nothing happened.

[sarocks]

Ok. I am not sure why this problem!

Once I got this exception, then I upgraded jsf to 2.1.1 and made the changes in web.xml. Then i never had this issue.

I am using tomcat 6.0.20 and Richfaces 4.0.0.Final

If the code I posted only giving this problem then its weired, because it works for me.

Or else you could do a little googling, may be something else causing this problem, i found something like below:

http://stackoverflow.com/questions/6207800/richtree-nullpointerexception-on-node-click

[pablo53]

There MUST be an error in RF 4.1.0

The same problem concerns <h:commandLink> inside a <h:dataTable> which is placed inside a <rich:tabPanel>. If I put it outside <rich:tabPanel> it works, when I put it inside <rich:tabPanel> - it does not.

Regards,

[raissi]

Hi Paweł,

Did you specify the value of the "name" attribute inside commandLink ? If not, can you try it ? I had the same issue as yours, but with RF 3.3, When I ommit the name attribute, then, nothing happens when clicking on the link.

I hope this helps,

Best Regards,