EntityQuery and @DataModelSelection

[lasuchobciuch]

Hi

I'm trying to use @DataModelSelection from EntityQuery to get selected row from ExtendedDataTable but it doesn't work for me.
Here's part of code:

   
<h:outputText value="#{data.dataModelSelection.id}" id="text2" />
  <rich:extendedDataTable
                id="exdt"
                value="#{data.dataModel}" var="zl" 
                sortMode="multi" selectionMode="single"
                height="650px" >

and ajax

               <a4j:support reRender="outcomment, text, text2"
                        event="onselectionchange" />

When page loads, i see id of element in first row.
Then if i click i get null pointer exception :(

Could someone give me working example ?

[ranophoenix]

EntityQuery is by default an Event scope component. Change it to Page scope and your code must work.

Regards,

[lasuchobciuch]

Thanks for reply
I have changed the code and now get this exception:

javax.el.ELException: /DataList.xhtml @419,92 value="#{data.dataModelSelection.id}": Error reading 'dataModelSelection' on type org.domain.testpro.session.DataList_$$_javassist_seam_2

I use entities generated with jboss tools with some modifications.
If i change this line:

<h:outputText value="#{data.dataModelSelection.id}" id="text2" />

into

<h:outputText value="#{data.dataModelSelectionIndex}" id="text2" />

I won't get exception, but clicking on row shows good index for just a second and then changes to -1