JDev 11g (Boxer) - ADF-Tree ExpandingProblem

Question

Hi,
I use the Boxer (JDev 11.1.1.0.0) Edition.
Technology: ADF Business Components (BC), ADF Faces
Database: Oracle XE (HR Schema)
I have created BC for the Departments- and Employees-table.
I drag-and-drop the DepartmentsView1 from the DataControl to the JSF-Page (in the center of a PanelStretchLayout)
and choose Create --> Trees --> ADF Tree.
In the "Edid Tree Binding"-Dialog --> Tree Level Rules, I add the EmployeesView (Code below):
<af:panelStretchLayout>
bq. <f:facet name="center">bq. <af:tree value="#{bindings.DepartmentsView1.treeModel}" var="node"selectionListener="#bindings.DepartmentsView1.treeModel.makeCurrent}" \\ rowSelection="single"> \\ <f:facet name="nodeStamp"> \\ <af:outputText value="#{node}"/> \\ </f:facet> \\ </af:tree>
     </f:facet>
(Fetchsize and Rangsize are default (25), the department with ID=50 has more than 25 employees)
Problem:
I run the page, all works fine.
1) First I expand the department (ID=50) -->works
2) then I retract the node (ID=50) --> works
3) I expand the department (ID=50) --> problem
ADF rendered only 25 elements (the Fetchsize) and shows the Text "Daten werden abgerufen..." (Retrieving data ...)
Has anybody the same problem, anybody an idea?
Many thanks!

Answer 1

I believe this has already been fixed in our main code branch. I will enter a boxer bug and make sure that the fix gets backported to boxer so that it is available in the next boxer patch. If I remember correctly, the issue had to do with trees with a large display area (with default fetchSize of 25). The issue is that the tree has to make multiple round trips to the server in order fill the visible area (view port) on the page.
Do either of the following workarounds work:
1) Set a fetchSize attribute on the af:tree tag larger than 25 (<af:tree fetchSize="75">). You may want to increase the rangeSize in your pageDef file as well so that the model rangeSize matches the view fetchSize.
2) Shrink the size of the tree on the page so that it does not have to make multiple round trips to the server to fill it's view port.