core-jgi/db/postgresql/functions/C_PaymentTerm_DueDate.sql

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CREATE OR REPLACE FUNCTION paymenttermduedate (in paymentterm_id numeric, in docdate timestamptz) RETURNS timestamptz AS
$BODY$
/*************************************************************************
* The contents of this file are subject to the Compiere License. You may
* obtain a copy of the License at http://www.compiere.org/license.html
* Software is on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either
* express or implied. See the License for details. Code: Compiere ERP+CRM
* Copyright (C) 1999-2001 Jorg Janke, ComPiere, Inc. All Rights Reserved.
*
* converted to postgreSQL by Karsten Thiemann (Schaeffer AG),
* kthiemann@adempiere.org
*************************************************************************
* Title: Get Due timestamp with time zone
* Description:
* Returns the due timestamp with time zone
* Test:
* select paymenttermDueDate(106, now()) from Test; => now()+30 days
************************************************************************/
DECLARE
Days NUMERIC := 0;
DueDate timestamp with time zone := TRUNC(DocDate);
--
FirstDay timestamp with time zone;
NoDays NUMERIC;
p RECORD;
BEGIN
FOR p IN
SELECT *
FROM C_PaymentTerm
WHERE C_PaymentTerm_ID = PaymentTerm_ID
LOOP -- for convineance only
-- Due 15th of following month
IF (p.IsDueFixed = 'Y') THEN
FirstDay := TRUNC(DocDate, 'MM');
NoDays := EXTRACT(day FROM TRUNC(DocDate) - FirstDay);
DueDate := FirstDay + (p.FixMonthDay-1); -- starting on 1st
DueDate := ADD_MONTHS(DueDate, p.FixMonthOffset);
IF (NoDays > p.FixMonthCutoff) THEN
DueDate := ADD_MONTHS(DueDate, 1);
END IF;
ELSE
DueDate := TRUNC(DocDate) + p.NetDays;
END IF;
END LOOP;
RETURN DueDate;
END;
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LANGUAGE 'plpgsql' STABLE
;