Primefaces datatable filtering not working [duplicate]

Answer 1

In short, I had the following and was causing the same error:

Date



    
    

I had to remove everything from except the

In my case, the (not limited to outputText) was causing ClassCastException in FilterFeature:277 that were swallowed by UIData.visitTree(VisitContext, VisitCallback) (doesn't have CATCH)

filterValue = ((ValueHolder) filterFacet).getLocalValue();

For some reason, filterFacet is an UIPanel, not a SelectOneMenu as expected.

So, the answer is: If you are using , then try removing everything from it except your custom filter field.