Apex Intermediate Progress | ( Lessons)

Lesson: 04 | Operation Types

Notes
Video

Notes

operationType:

Returns an enum of type System.TriggerOperation corresponding to the current operation.
Possible values of the System.TriggerOperation enum are:

BEFORE_INSERT
BEFORE_UPDATE
BEFORE_DELETE
AFTER_INSERT
AFTER_UPDATE
AFTER_DELETE
AFTER_UNDELETE

If you vary your programming logic based on different trigger types, consider using the switch statement with different permutations of unique trigger execution enum states.

trigger AccountTrigger on Account( before insert, after insert, before update, after update ) {
    switch on Trigger.operationType {
        when BEFORE_INSERT {
            System.debug( 'Before Insert' );
        }
        when AFTER_INSERT {
            System.debug( 'After Insert' );
        }
        when BEFORE_UPDATE {
            System.debug( 'Before Update' );
        }
        when AFTER_UPDATE {
            System.debug( 'After Update' );
        }
    }
}

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A. Apex DML Operations (8 lessons)

B. Apex Classes (17 lessons)

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Lesson: 04 | Operation Types

Notes

operationType:

Apex Intermediate