3 Replies Latest reply on Dec 5, 2010 8:23 PM by jovincen

    multiple a4j:include and multiple transactions

    jovincen
    jovincen Dec 5, 2010 4:45 AM

      Hi All,


      I'm (trying ;P) to build an AJAX heavy website and am having some difficulties with a4j:include. I'm quite new to J2EE and Seam so the answer is probably obvious :/



      Is it possible to build a single page from many a4j:include's? where each is independent of the others?



      Essentially I have a single template:



      <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:s="http://jboss.com/products/seam/taglib"
      xmlns:rich="http://richfaces.org/rich"
      xmlns:a="http://richfaces.org/a4j">

     <ui:composition template="layout/template.xhtml">
        
        <ui:define name="body">
          <a:form>
               <a:outputPanel ajaxRendered="true"> 
                    <a:include viewId="commonTemplate.xhtml">
                         <ui:param name="uniqueID" value="one" />
                         <ui:param name="backingBean" value="#{myFirstBean}" />
                    </a:include>
               </a:outputPanel>
          </a:form>
          
          <a:form>
               <a:include viewId="anotherTemplate.xhtml"></a:include>
          </a:form>

          <br /><br />

          <a:form>
               <a:outputPanel ajaxRendered="true">
                    <a:include viewId="commonTemplate.xhtml">
                         <ui:param name="uniqueID" value="two" />
                         <ui:param name="backingBean" value="#{mySecondBean}" />
                    </a:include>
               </a:outputPanel>
          </a:form>
               
     </ui:define>
     </ui:composition> 
</html>




      Each of the nested templates features a call similar to:






      <a:commandLink 
     value="edit" 
     action="#{backingBean.beginEdit}"           
     immediate="false"          
 >
     <s:conversationId />
</a:commandLink>






      This backingBean beginEdit() is annotated with @Begin(nested=true).




      What I'm finding is that after each post all templates on the client are taking the conversation of the latest.


      Eg.
      If I edit the first bean it is part of conversation 3
      If I edit the second bean then both the first and second are part of conversation 4
      And the final edit pushes all under the conversation 5.



      Seems like the client is re-rendering the <s:conversationid /> with each of the responses.


      I have tried nesting these under a single transaction, I think it might be an issue with a4j:include.


      Am I doing something fundamentally wrong?


      Seems a shame if a4j:include doesn't support this.


      Cheers,


      Jono