Richfaces DataTable Problem

[Dominik Müller]

Hi There,


i implemented the ArrangeableModel as shown in the demo application ( http://richfaces-showcase.appspot.com/richfaces/component-sample.jsf?demo=dataTable&skin=blueSky ). But i get the following strange error, while calling the page with the table:

java.lang.ClassCastException: java.lang.Boolean cannot be cast to java.lang.String
    at com.arvato.rewards.sumas.ui.utils.JPADataModel.createFilterCriteria(JPADataModel.java:180)

The Problem is at this point (last line): (this is the JPADataController which is shown in the demo)

private Expression<Boolean> createFilterCriteria(CriteriaBuilder criteriaBuilder, Root<T> root)
  {
    Expression<Boolean> filterCriteria = null;
    List<FilterField> filterFields = arrangeableState.getFilterFields();
    if (filterFields != null && !filterFields.isEmpty())
    {
      FacesContext facesContext = FacesContext.getCurrentInstance();
      for (FilterField filterField : filterFields)
      {
        String propertyName = (String) filterField.getFilterExpression().getValue(facesContext.getELContext());  //<< Thats the Problem

he tries to determined the EL value: "#{property}" which is used in the including "jpaColumn.xhtml".
But the ELContext can't resolve the value for this property! I debugged the application and tested other EL-Values. The "property" and "bean" values from the include-page can't be resolved, all other references (the managedbeans for example) worked well...

Any ideas? Help?


Thanks a lot
Dom


System:
Richfaces 4.0.0.Final
Hibernate 3.6.6.
Glassfish 3.1