rich:recursiveTreeNodesAdaptor calling roots collection exce

[anders.norgaard]

Hi,

I have a tree

<rich:tree switchType="ajax">
 <rich:recursiveTreeNodesAdaptor roots="#{taskhistorymanager.historyTree()}" var="task">
 <rich:treeNode>
 <table><tbody><tr>
 <td><h:outputText value="#{task.createdDate}"><f:convertDateTime pattern="yyyy-MM-dd H:mm:ss"/></h:outputText></td>
 <td><h:outputText value="#{task.status}"/></td>
 <td><h:outputText value="#{task.taskName}"/></td>
 </tr></tbody></table>
 </rich:treeNode>
 </rich:recursiveTreeNodesAdaptor>
</rich:tree>

and I find that the roots collection method "#{taskhistorymanager.historyTree()}" is called N+1 times, where N is the size of the collection returned.

Is this on purpose?

The reason I ask is that I would like to return an always updated list, so I would like to query the database on every refresh of the page. But the current situation with N+1 queries for every refresh is too much. Any ideas for a workaround?

Best
Anders