Nested dataTable with dynamic number of columns

[logularjason]

I am hopeful that it is possible to render columns within a subTable, where the number of columns are defined at runtime.

I've tried many experiments based on the code snippet below, but the table fails to render. Note how the columns are effectively obtained via row.subRow.getColumns(), and I suspect this is problematic.

Tips on how to resolve or troubleshoot this issue would be most appreciated.

Jason.

<rich:dataTable value="#{jasonBean.getOuterRows()}" var="row">
 <rich:column breakBefore="true">
 <!-- Table nested in a column -->
 <rich:subTable value="#{row.getSubRows()}" var="subRow">
 <!-- Number of cols in subTable is determined at runtime -->
 <rich:columns value="#{subRow.getColumns()}" var="subColumn">
 <h:outputText value="#{subColumn.value}"/>
 </rich:columns>
 </rich:subTable>
 </rich:column>
</rich:dataTable>

[shadowcreeper]

I think you need to make them sub-rich:dataTable components rather than rich:subTable components.

I believe rich:subTable expects that all subTables have the same amount of columns.

[logularjason]

This problem manifests independent of whether subTable or dataTable is used.

Is there a issue with referring up the "var" stack like this. Experiments suggest that the inner columns element cannot reference the necessary variables.

I'm also wondering if I am perhaps witnessing a bug - I would be most grateful to see working code that has a "columns" (i.e. not "column") component inside a nested table.

[logularjason]

It is also possible that I am doing something naive, and misusing the components. This is the main reason for my post - I am hoping that someone can confirm that the code above should work.

I have been unable to find any examples of a element inside nested dataTables.

[shadowcreeper]

I remember having odd behavior similar to this. I had to use other (non-RF) components to make it work right.

If I remember right, one of my dataTables was a tomahawk component with t:columns, and I just faked the looks of the RF component by messing with the styleClass type attributes.

I ended up reworking it to not need nested tables and now it is just a rich:dataTable so I'm afraid I can't just post a code snippet.

Hope this helps.
-Shadow

[logularjason]

I'm now assuming this is a bug. Raised same:

https://jira.jboss.org/jira/browse/RF-4330