Expression or Function as field in Object Type

Question

I am trying to use an expression or call a function as a return value for a field in an OBJECT TYPE.
Here's the obj def:
CREATE OR REPLACE TYPE OUTAGE_REPEAT_CALL_T2 AS OBJECT (
     INITCALL_TS      DATE,
     LASTCALL_TS      DATE,
     CALL_SRC      CHAR(8),
     ELAPSED_TIME     NUMBER,
     REP_ID           CHAR(8),
     CALL_CNT      NUMBER(3)
The ELAPSED_TIME field should be the differnece in minutes from the LASTCALL_TS and SYSDATE...
I'm not sure how to select into this OBJECT to get my result...
Sample table and data:
SQL> desc oms.outage_repeat_call
Name Null? Type
ACCT NOT NULL NUMBER(10)
INITCALL_TS NOT NULL DATE
LASTCALL_TS NOT NULL DATE
CALL_CNT NOT NULL NUMBER(3)
CALL_SRC NOT NULL CHAR(8)
REP_ID NOT NULL CHAR(8)
The ELAPSED_TIME is not part of the underlying table..
sample data from tbl:
ACCT INITCALL_ LASTCALL_ CALL_CNT CALL_SRC REP_ID
123456 02-JAN-02 02-JAN-02 1 CBIS MJB2302
I want to have this as a result:
INITCALL_ LASTCALL_ CALL_SRC ELAPSED_TIME REP_ID CALL_CNT
02-JAN-02 02-JAN-02 CBIS 9997 MJB2302 1
But by doing a select from the OBJECT TYPE:
i.e.
SELECT OUTAGE_REPEAT_CALL_T2(     ORPC.INITCALL_TS,
                    ORPC.LASTCALL_TS,
ORPC.CALL_SRC,
                    'expression or func' AS ELAPSED_TIME,
ORPC.REP_ID,
ORPC.CALL_CNT)
FROM
OMS.OUTAGE_REPEAT_CALL ORPC
WHERE
ORPC.ACCT=123456;
I am using DBMS_XMLQUERY to eventually get this:
<?xml version = '1.0'?>
<ROWSET>
<ROW num="1">
<INITCALL_TS>1/2/2002 12:45:0</INITCALL_TS>
<LASTCALL_TS>1/2/2002 12:45:0</LASTCALL_TS>
<CALL_SRC>CBIS </CALL_SRC>
<ELAPSED_TIME>10009</ELAPSED_TIME>
<REP_ID>MJB2302 </REP_ID>
<CALL_CNT>1</CALL_CNT>
</ROW>
</ROWSET>
Here's the real query... this OBJECT TYPE is embedded as an attribute of another OBJECT TYPE def.
          sQuery := 'SELECT '
               || iNumAcct || ' AS NUMACCT,
               SITE_T(S.ACCT,
                    S.SITE,
                    S.PHONE,
                    S.CUST_NM,
                    S.MED_IND,
                    S.MAC_IND,
                    S.HPP_IND,
                    S.STREET,
                    S.CITY,
                    S.STATE,
                    S.ZIP,
                    S.EUC,
                    S.STATUS,
                    S.AGR_TYP,
                    S.PRICE_SCHED,
                    S.OL_IND,
                    S.TRANS_IND,
                    S.CIRCUIT,
                    S.SUBSTATION,
                    S.OP_CENTER,
                    OUTAGE_STATUS_T(O.OUT_ID,
                         O.OUT_STATUS,
                         O.PO_DEV,
                         O.DEV_TYP,
                         O.CREW,
                         O.ETOR_TS,
                         O.TRBL_CD,
                         O.FIRST_RPT_TS,
                         O.END_TS,
                         O.CUST_CNT,
                         O.O_CALL_CNT,
                         OUTAGE_REPEAT_CALL_T(ORC.INITCALL_TS,
                              ORC.LASTCALL_TS,
                              ORC.CALL_SRC,
                              ORC.REP_ID,
                              ORC.CALL_CNT),
                         LIGHT_REPEAT_CALL_T(LRC.INITCALL_TS,
                              LRC.LASTCALL_TS,
                              LRC.CALL_SRC,
                              LRC.REP_ID,
                              LRC.CALL_CNT)
                         ) AS OUTCUST
               FROM
               OMS.SITE S,
               OMS.OUTAGE O,
               OMS.OUTAGE_REPEAT_CALL ORC,
               OMS.LIGHT_REPEAT_CALL LRC,
               OMS.OUTAGE_TRANSFORMER OT
               WHERE
               S.ACCT = ' || pi_acctNum || ' AND
               S.TRNFRMR_ID = OT.TRNFRMR_ID(+) AND
               OT.OUT_ID = O.OUT_ID(+) AND
               S.ACCT = ORC.ACCT(+) AND                         
               S.ACCT = LRC.ACCT(+)';
I know this may sound confusing...but I apprecitate anyone's/everyone's suggestions!
MJB
DUKEPOWER CO.

Answer 1

yes... here's the function that I also used as the expression...
FUNCTION uf_minutesDiff(pi_beginDte IN VARCHAR2, pi_endDte IN VARCHAR2) RETURN NUMBER
||     FUNC name: uf_minutesDiff
||     purpose: this function accepts A BEGINNING DATE AND ENDING DATE AND
||               RETURNS THE DIFFERENCE IN MINUTES
||
||     date:     12/19/2001
||     author: Mark J Brooks
||
||     history:
||
||
IS
     iMinutes     NUMBER;
/*      LINE 280          */
BEGIN
     select (to_date(pi_endDte,'DD-MON-YYYY:HH24:MI') -
          to_date(pi_beginDte,'DD-MON-YYYY:HH24:MI'))*24*60
          INTO iMinutes from dual;
     IF iMinutes = 0
     THEN
          iMinutes := 1;
     END IF;
     RETURN iMinutes;
END uf_minutesDiff;
I also just used:
SQL> SELECT OUTAGE_REPEAT_CALL_T2( ORPC.INITCALL_TS,
2 ORPC.LASTCALL_TS,
3 ORPC.CALL_SRC,
4 (ORPC.LASTCALL_TS - SYSDATE) AS ELAPSED_TIME,
5 ORPC.REP_ID,
6 ORPC.CALL_CNT)
7 FROM
8 OMS.OUTAGE_REPEAT_CALL ORPC
9 WHERE
10 ORPC.ACCT=123456;
(ORPC.LASTCALL_TS - SYSDATE) AS ELAPSED_TIME,
ERROR at line 4:
ORA-00907: missing right parenthesis
with and without the parens
tx