FilteredRowSet Predicate evaluate method

When I create a Predicate object I don't understand when the last two methods are called...

class My_Filter implements Predicate
{
    public boolean evaluate(RowSet rs)
    {
    }

    public 开发者_运维百科boolean evaluate(Object value, int column) throws SQLException
    {
    }

    public boolean evaluate(Object value, String columnName) throws SQLException
    {
    }
}

in my simple example they are never called.

Thanks.

Not sure if your example includes inserting rows. According to the java doc for both the column based evaluate methods ...

The FilteredRowSet object will use this method internally while inserting new rows to a FilteredRowSet instance.