How stored procedure returns from multiple cursor - sql

Question

I have Oracle Stored Procedure below and I understood most of the logic inside except for the part where the caller of the procedure will get all the values from different cursors.
Did some reading that SP returns the OUT part in a procedure parameters shown in the sample below. But i fail to get any reference as to how p_returnCode can store resultsets from queries inside the stored procedure.
Procedure retrieveX(p_date date, p_loc varchar2, p_returnCode out integer)
The stored procedure below have 3 cursors cur1, cur2 and cur3. How or where does it store the values? Cur1 contains 2 columns with multiple rows and Cur2 and Cur3 contains one column with multiple rows.
Can anyone clarify this part?
Caller from cgi script
report.retrieveX(p_date,p_loc,p_return)
Full Stored Procedure
PROCEDURE retrieveX(
p_date DATE,
p_loc VARCHAR2,
p_returnCode OUT INTEGER
)
AS
TYPE cur_typ IS REF CURSOR;
cur1 cur_typ;
cur2 cur_typ;
cur3 cur_typ;
query_str VARCHAR2(2000) := '';
query_str2 VARCHAR2(2000) := '';
query_str3 VARCHAR2(2000) := '';
v_an VARCHAR2(20);
v_tn VARCHAR2(20);
v_sOID varchar2(20);
BEGIN
sqlRouteDT := 'AND sp.ROUTE_DT = TO_DATE(''' || TO_CHAR(p_date, 'YYYY/MM/DD') || ''',''YYYY/MM/DD'')';
IF p_loc IS NOT NULL THEN
sqlLocation := 'AND act.location_cd = ''' || p_loc || '''';
END IF;
p_returnCode := 0;
query_str := '
SELECT distinct
sp.ab,
y.track,
FROM ship sp
inner join activ act on sp.soid=act.on
inner join peace y on act.on=y.soid
where
sp.man is not null
' || sqlLocation || '
' || sqlRouteDT || '
ORDER BY sp.ab asc
';
OPEN cur1 FOR query_str1;
LOOP
FETCH cur1
INTO
v_AN,
v_FN
EXIT WHEN cur1%NOTFOUND;
query_str2 := '
SELECT DISTINCT INTER_CD
FROM TBL_INTR
WHERE AF = ''Y''
AND sOID = ''' || v_sOID || '''
ORDER BY INTER_CD
';
OPEN cur2 FOR query_str2;
LOOP
FETCH cur2
INTO v_intr_cd;
EXIT WHEN cur2%NOTFOUND;
DBMS_OUTPUT.PUT_LINE('INTER_CD|' || v_intr_cd);
END LOOP;
CLOSE cur2;
query_str3 := '
SELECT DISTINCT hi_cd
FROM tbl_hi
WHERE AF = ''Y''
AND sOID = ''' || v_sOID || '''
ORDER BY hi_cd
';
OPEN cur3 FOR query_str3;
LOOP
FETCH cur3
INTO v_hi_c;
EXIT WHEN cur3%NOTFOUND;
DBMS_OUTPUT.PUT_LINE('hi_cd|' || v_hi_c);
END LOOP;
CLOSE cur3;
END LOOP;
CLOSE cur1;
EXCEPTION WHEN OTHERS THEN
p_returnCode := 1;
DBMS_OUTPUT.PUT_LINE(SQLERRM);
END retrieveX;

Answer 1

I don't think possible to do that you want.
Maybe you should to considerate the use of pipelined function, please take a look at https://oracle-base.com/articles/misc/pipelined-table-functions
With this technique, you can write a pl/sql code to access to complex data and relationship table and get the result as a simple
select * from StoredProcedure(Parameter_1...);