ERROR: DataModel must implement ... SelectableDataModel

[jim@jimtough.com]

I've just updated my project code to use the 3.0-M3 (final) release. My last snapshot version was still using the PrimeDataModel class for <p:dataTable> that had single selection enabled. When I updated to 3.0-M3 final that class no longer existed. I looked at the current 3.0 Showcase and the code samples shown on the page don't show any data model references at all. This is the way single selection used to work. So I reverted back to my old code that did not use the (now defunct) PrimeDataModel and looks like the code samples in the 3.0 Showcase.

So why am I getting this exception?

DataModel must implement org.primefaces.model.SelectableDataModel when selection is enabled.

Is the 3.0 Showcase code stale or have I made a mistake?

[tandraschko]

Cagatay changed the selection handling and introduced the rowkey. If you have a list with objects, you can just use rowKey="#{object.id}"

[undermensch]

If you enable selection, you need to define rowKey attribute for the datatable or point value to a data model like my example below....

Code: Select all

public class StudentDataModel extends ListDataModel<Student> implements SelectableDataModel<Student>{

    public StudentDataModel(List<Student> list) {
        super(list);
    }    

    @Override
    public Student getRowData(String rowKey) {
        List<Student> students = (List<Student>)this.getWrappedData();
        for(Student student : students){
            if(student.getIdStudent().toString().equalsIgnoreCase(rowKey)){
                return student;
            }
        }
        return null;
    }

    @Override
    public Object getRowKey(Student object) {
        return object.getIdStudent();
    }

[jim@jimtough.com]

@undermensch

Thanks, that works. I was implementing SelectableDataModel<XYZ> but not extending ListDataModel<XYZ>.