Bulk into table objects - oracle

Question

I want populate my table of objects and I try of different ways but I can´t. With this code I have an extensive error: "Encountered the symbol "L_T_O_TYPE" when expecting one of the following: .(*#_-+/", it is a big message
CREATE OR REPLACE TYPE O_Type AS OBJECT (
depar_id NUMBER,
depar_name VARCHAR2(20),
man_id NUMBER,
loca_id NUMBER,
CONSTRUCTOR FUNCTION O_Type(
depar_id NUMBER,
depar_name VARCHAR2,
man_id NUMBER,
loca_id NUMBER)
RETURN SELF AS RESULT
);
CREATE OR REPLACE TYPE BODY O_Type IS
CONSTRUCTOR FUNCTION O_Type(
depar_id NUMBER,
depar_name VARCHAR2,
man_id NUMBER,
loca_id NUMBER,
)RETURN AS SELF AS RESULT IS
BEGIN
self.depar_id := depar_id;
self.depar_name := depar_name;
self.man_id := man_id;
self.loca_id := loca_id;
RETURN;
END;
END;
/
CREATE OR REPLACE TYPE T_o_type AS TABLE OF O_Type;
/
DECLARE
CURSOR C_depar IS SELECT *
FROM departments;
TYPE T_C_DEPAR IS TABLE OF C_depar%ROWTYPE;
L_TABLE T_C_DEPAR;
l_T_o_type T_o_type;
BEGIN
l_T_o_type := T_o_type();
OPEN C_depar;
LOOP
FETCH C_depar BULK COLLECT INTO L_TABLE;
EXIT WHEN C_depar%NOTFOUND;
FORALL i IN 1..L_TABLE.count
l_T_o_type(i) : = T_o_type(L_TABLE.DEPARTMENT_ID, L_TABLE.DEPARTMENT_NAME, L_TABLE.MANAGER_ID , L_TABLE.LOCATION_ID)
END LOOP;
CLOSE C_depar;
END;
/
Can someone tell me the best way to populate my object table?

Answer 1

"Best" is subjective.
If you want all the rows in a single collection, use SELECT ... BULK COLLECT INTO:
DECLARE
l_depts T_o_type;
BEGIN
SELECT O_Type(id, name, man_id, loc_id)
BULK COLLECT INTO l_depts
FROM departments;
FOR i IN 1 .. l_depts.COUNT LOOP
DBMS_OUTPUT.PUT_LINE(
l_depts(i).depar_id
|| ' ' || l_depts(i).depar_name
|| ' ' || l_depts(i).man_id
|| ' ' || l_depts(i).loca_id
);
END LOOP;
END;
/
If you want to process the rows in batches then you can use:
DECLARE
CURSOR C_depar IS
SELECT O_Type(id, name, man_id, loc_id)
FROM departments;
l_depts T_o_type;
BEGIN
OPEN C_depar;
LOOP
FETCH C_depar BULK COLLECT INTO L_depts LIMIT 10;
FOR i IN 1 .. l_depts.COUNT LOOP
DBMS_OUTPUT.PUT_LINE(
l_depts(i).depar_id
|| ' ' || l_depts(i).depar_name
|| ' ' || l_depts(i).man_id
|| ' ' || l_depts(i).loca_id
);
END LOOP;
EXIT WHEN C_depar%NOTFOUND;
END LOOP;
CLOSE C_depar;
END;
/
db<>fiddle here