Oracle OAF : Deleting Row

// Deleting Direclty In Controller

// Controller CODE
/////////////////////Delete Load Table/////////////////////////////////////////
if ("delete".equals(pageContext.getParameter("event")))
{
   String rowReference = pageContext.getParameter(EVENT_SOURCE_ROW_REFERENCE);
   System.out.println(rowRef);
   ARow currRow = (OARow)am.findRowByRef(rowReference);
   currRow.remove();
}

/********************************************************************************/
// Deleting In AM

// Controller CODE
/////////////////////Delete Load Table/////////////////////////////////////////
if ("DelCommRows".equals(pageContext.getParameter(EVENT_PARAM)))
    {
        String rowRef = pageContext.getParameter(EVENT_SOURCE_ROW_REFERENCE);
        System.out.println(rowRef);
        Serializable [] param={rowRef};
        am.invokeMethod("deleteRec",param);
    }


// AM CODE
/////////////////////Delete Load Table/////////////////////////////////////////
 public void deleteRec(String  ref)
 {
   Row r = findRowByRef(ref);
   r.remove();
   getTransaction().commit();
 }