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It creates a test table, a package to hold shared data and a trigger for each of the timing points.

Each trigger extends a collection defined in the package and stores a message with the trigger name and the current action it was triggered with.

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trigger_test_api.g_LOOP DBMS_OUTPUT.put_line(trigger_test_api.g_tab(i)); END LOOP; trigger_test_api.g_tab.delete; END trigger_test_as_trg; / COLUMN object_name FORMAT A20 SELECT object_name, object_type, status FROM user_objects; OBJECT_NAME OBJECT_TYPE STATUS -------------------- ------------------- ------- TRIGGER_TEST_API PACKAGE VALID TRIGGER_TEST TABLE VALID TRIGGER_TEST_BS_TRG TRIGGER VALID TRIGGER_TEST_BR_TRG TRIGGER VALID TRIGGER_TEST_AR_TRG TRIGGER VALID TRIGGER_TEST_AS_TRG TRIGGER VALID 6 rows selected.

SQL UPDATE trigger_test SET id = id; BEFORE STATEMENT - UPDATE BEFORE EACH ROW - UPDATE (new.id=2 old.id=2) AFTER EACH ROW - UPDATE (new.id=2 old.id=2) BEFORE EACH ROW - UPDATE (new.id=1 old.id=1) AFTER EACH ROW - UPDATE (new.id=1 old.id=1) AFTER STATEMENT - UPDATE 2 rows updated.

The workaround for this is to use variables defined in packages to store information that must be in scope for all timing points.

The following code demonstrates the order in which the timing points are fired.

The following code will display the contents of the collection and clear it down. trigger_test_api.g_LOOP DBMS_OUTPUT.put_line(trigger_test_api.g_tab(i)); END LOOP; trigger_test_api.g_tab.delete; END; / BEFORE STATEMENT - INSERT BEFORE EACH ROW - INSERT (new.id=1) AFTER EACH ROW - INSERT (new.id=1) PL/SQL procedure successfully completed.

Last modified 21-Oct-2017 17:18