I have, what I would assume, is a pretty common use case. We're rendering a simple "Comments" page using JSF on Wildfly 10.0. Each comment may have a parent comment, and child comments underneath it. Since there's no way to know ahead of time what the structure is, we'd like to create a JSF fragment and yoGGie ツ it recursively to render the contents. It would look something like this...
Main page:
<ui:include />Comment Fragment:
<ul class="comments>
<ui:repeat value="#{myObj.comments}" var="comment">
<ui:include src="/WEB-INF/fragments/comment.xhtml">
<ui:param name="comment" value="#{comment}" />
</ui:include>
</ui:repeat>
</ul>
However, when I run this code, the recursion seems to cause <li><h:outputText value="#{comment.text}">
<ui:fragment rendered="#{not empty comment.childComments}">
<ul class="comments">
<ui:repeat value="#{comment.childComments}" var="comment">
<ui:include src="/WEB-INF/fragments/comment.xhtml">
<ui:param name="comment" value="#{comment}" />
</ui:include>
</ui:repeat>
</ul>
</ui:fragment>
</li>
, regardless of how many items there are. Additionally, we see a java.lang.StackOverflowError saying, javax.servlet.ServletException
Is there a reason why this recursive call results in this Exception? Is there a better way to accomplish this? I've tried using "Could not Resolve Variable [Overflow]" to iterate over the comments, however when I do this it does not appear to work in JSF. I've tried both the <c:forEach /> and http://xmlns.jcp.org/jsp/jstl/core namespaces for the taglib, but the http://java.sun.com/jsp/jstl/core tag doesn't seem to iterate over my objects. (That is, nothing is being rendered to the page)
Any help you can give would be GREATLY appreciated.