public final Cursor<T> queryByExample (Connection conn, T obj)
    {
        return new Cursor<T>(this, conn, obj, null, false);
    }
public final Cursor < T > queryByExample ( Connection conn , T obj ) { return new Cursor < T > ( this , conn , obj , null , false ) ; }
Select records from database table using <I>obj</I> object as template.

@param obj example object for search: selected objects should match all
non-null fields.