Who is eating my customer?

Question

Hi all,
I have an actionListener which sets a bean in the request scope, but am finding that when the page is rendered the bean is gone! It seems to be related to a naming issue. The actionListener appears inside a h:dataTable with var="customer" and the request scope bean is also called "customer". If I change either of those names so that there is no conflict the problem disappears.
I'm using facelets and suspect that that could be where the problem is (I get the same behaviour on MyFaces and the RI) but thought I'd check here to see if I'm doing anything wrong.
In psuedocode:
page1.xhtml
<h:form>
  <h:dataTable value="#{dao.customers}" var="customer">
    <h:column>
      <h:commandLink action="goToPage2">
        <f:actionListener type="actions.SetCustomerFromId"/>
        <f:param name="id" value="${customer.id}"/>
        Edit ${customer.id}
      </h:commandLink>
    </h:column>
  </h:dataTable>
</h:form>
actions.SetCustomerFromId.java:
id = (String) context.getRequestParameterMap().get("id");
requestMap.put("customer", em.find(Customer.class, id));
page2.xhtml
${customer.id}Thanks in advance,
Roger

Answer 1

No all of them were there, I was just editing for space. I suspect, but I am not sure, that my ScrollPane was consuming the pageup/pagedown key events, even though the scroll bars were not visible.
see: http://java.sun.com/products/jfc/tsc/special_report/kestrel/keybindings.html
...which says " For example BasicScrollPaneUI creates default bindings for page up/down for it's view descendant this way."
Anyway, I fixed my problem by using: InputMap im = comp.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); instead of InputMap im = comp.getInputMap(JComponent..WHEN_IN_FOCUSED_WINDOW);