PL SQL Compund Triggers on Batch Inserts - oracle

Question

I've written a compound trigger to fire on inserts. Multiple inserts are batched together and sent to the DB where the compound trigger picks it up. My problem is that i need to perform an update query on the same table for certain inserts depending on the data provided by the query. I can't run a row level action since that would result in a mutating trigger table error (ORA-4091). Best thing i could think of was to have the update query in the before or after statement blocks. i cannot have it on the before statement block since each update is dependent on individual inserts and there's no way of knowing the values before actually reaching that query. so i created a "Type" table and updated it before each row is modified and then later at the after statement block i iterate through the Type table and perform update queries using the data on the table. No matter what i tried the After statement block will only perform update queries for the last insert only.
TYPE apple IS RECORD ( v_size apple_t.size%Type, v_color apple_t.color%Type);
TYPE t_apple IS TABLE OF apple INDEX BY VARCHAR2(20);
BEFORE ROW
t_apple(key).v_size := :New.size;
t_apple(key).v_color := :New.color;
END BEFORE ROW
AFTER STATEMENT
Iterator := t_apple.First;
LOOP EXIT WHEN ITERATOR IS NULL;
UPDATE apple_t SET SIZE = 10
WHERE color = t_apple(Iterator).color;
Iterator := t_apple.Next(Iterator);
END LOOP
END AFTER STATEMENT
This basically is how the trigger is designed. Using a second table is out of the question since trigger cost is a major factor. Any Pointers? Please and Thankyou

Answer 1

I dont fully understand but I think you can get your keys after each row ,then update data in after statament block as follows.
declare
idx number := 1 ;
type array_t is varray(10000) of varchar2(100) ;
colorArr array_t := array_t();
AFTER EACH ROW IS
BEGIN
if inserting then
colorArr (idx) := :new.color;
idx := idx + 1 ;
end if;
END
AFTER EACH ROW;
AFTER STATEMENT IS
BEGIN
for i in 1..sicilNoCol.count
loop
-- update here
end loop;
END AFTER STATEMENT;
or why dont you write a simple before insert trigger that you can manuplate :new.size in it? Does it give table mutable error?