trigger

<?xml version="1.0"?>
  <database name="TRIGGER M_REQUISITIONORDER_TRG">
    <trigger name="M_REQUISITIONORDER_TRG" table="M_REQUISITIONORDER" fires="before" insert="true" update="true" delete="true" foreach="row">
      <body><![CDATA[

    /*************************************************************************
    * The contents of this file are subject to the Openbravo  Public  License
    * Version  1.1  (the  "License"),  being   the  Mozilla   Public  License
    * Version 1.1  with a permitted attribution clause; you may not  use this
    * file except in compliance with the License. You  may  obtain  a copy of
    * the License at http://www.openbravo.com/legal/license.html
    * Software distributed under the License  is  distributed  on  an "AS IS"
    * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
    * License for the specific  language  governing  rights  and  limitations
    * under the License.
    * The Original Code is Openbravo ERP.
    * The Initial Developer of the Original Code is Openbravo SLU
    * All portions are Copyright (C) 2008-2014 Openbravo SLU
    * All Rights Reserved.
    * Contributor(s):  ______________________________________.
    ************************************************************************/
    v_DocStatus VARCHAR(60);
    v_ReqStatus VARCHAR(60);
    v_Count     NUMBER;

BEGIN

    IF AD_isTriggerEnabled()='N' THEN RETURN;
    END IF;


IF INSERTING THEN
  SELECT DocStatus, ReqStatus INTO v_DocStatus, v_reqstatus
  FROM M_Requisition, M_RequisitionLine
  WHERE M_REquisitionLine_ID = :new.M_RequisitionLine_ID
    AND M_Requisition.M_Requisition_ID = M_RequisitionLine.M_Requisition_ID;
ELSE
  SELECT DocStatus, ReqStatus INTO v_DocStatus, v_reqstatus
  FROM M_Requisition, M_RequisitionLine
  WHERE M_REquisitionLine_ID = :old.M_RequisitionLine_ID
    AND M_Requisition.M_Requisition_ID = M_RequisitionLine.M_Requisition_ID;
END IF;

IF (INSERTING) THEN
  SELECT COUNT(*) INTO v_Count
  FROM M_REQUISITIONLINE A, C_ORDERLINE B
  WHERE A.M_REQUISITIONLINE_ID = :new.M_REQUISITIONLINE_ID
    AND B.C_ORDERLINE_ID = :new.C_ORDERLINE_ID
    AND A.M_PRODUCT_ID = B.M_PRODUCT_ID;
  IF (v_Count = 0) THEN
    RAISE_APPLICATION_ERROR(-20000, '@20524@');
  END IF;
END IF;

IF ((v_DocStatus <> 'CO') OR (v_ReqStatus <> 'O')) THEN
  RAISE_APPLICATION_ERROR(-20000, '@RequisitionProcessed@');
END IF;

IF (UPDATING OR DELETING) THEN
  UPDATE M_REQUISITIONLINE
  SET ORDEREDQTY = COALESCE(ORDEREDQTY,0) - :OLD.QTY
  WHERE M_REQUISITIONLINE_ID = :OLD.M_REQUISITIONLINE_ID;
END IF;
IF (INSERTING OR UPDATING) THEN
  UPDATE M_REQUISITIONLINE
  SET ORDEREDQTY = COALESCE(ORDEREDQTY,0) + :NEW.QTY
  WHERE M_REQUISITIONLINE_ID = :NEW.M_REQUISITIONLINE_ID;
END IF;
END M_REQUISITIONORDER_TRG
]]></body>
    </trigger>
  </database>