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September 16, 2016

9/16/2016 03:48:00 AM

Oracle Forms : Trigger Firing Sequence


The first column, Action, describes the function to be performed
    (e.g. deleting a record).
 o  The second column, Trigger Firing Order, describes the order
    in which triggers fire after a function is performed.
 o  The third column, Level, describes the level (form, block, item)
    at which the trigger fires.  This was accomplished by creating a form
    with all the triggers invoked.  If a trigger could fire at all levels,
    it was included at all levels.  Such a trigger fires at the lowest level
    at which it is defined.

Key triggers and triggers which fire via buttons or check boxes are
not included.

This bulletin does not cover every contingency and covers only the
most commonly used actions.

Action                 Trigger Firing Order                    Level
------                 --------------------                    -----
Runform                 1.  Pre-Logon                          Form
                        2.  On-Logon                           Form
                        3.  Post-Logon                         Form
                        4.  Pre-Form                           Form
                        5.  When-Create-Record                 Block
                        6.  Pre-Block                          Block
                        7.  Pre-Record                         Block
                        8.  Pre-Text-Item                      Item
                        9.  When-New-Form-Instance             Form
                        10. When-New-Block-Instance            Block
                        11. When-New-Record-Instance           Block
                        12. When-New-Item-Instance             Item

***********
Enter Query             1.  Post-Text-Item                     Item
                        2.  Post-Record                        Block
                        3.  When-Clear-Block                   Block
                        4.  When-New-Record-Instance           Block
                        5.  When-New-Item-Instance             Item

Note: If you define the Key-ENTQRY trigger, this is the only trigger
      which fires in an Enter Query situation.


*****************
Execute Query
After Enter Query       1.  Pre-Query                          Block
                        2.  Pre-Select                         Block
                        3.  On-Select                          Block
                        4.  When-Clear-Block                   Block
                        5.  Post-Select                        Block
                        6.  On-Fetch                           Block
                        7.  On-Close                           Form
                        8.  When-Clear-Block                   Block

Note: If you define the Key-EXEQRY trigger, this is the only trigger
      which fires in an Execute Query situation.


*************
Execute Query
Without Enter
Query                   1.  Post-Text-Item                     Block
                        2.  Pre-Query                          Block
                        3.  Pre-Select                         Block
                        4.  On-Select                          Block
                        5.  Post-Select                        Block
                        6.  On-Fetch                           Block
                        7.  On-Close                           Form
                        8.  When_Create_Record                 Block
                        9.  Pre-Record                         Block
                        10. Pre-Text-Item                      Item
                        11. When-New-Record-Instance           Block
                        12. When-New-Item-Instance             Item


****
Exit                    1.  Post-Text-Item                     Item
                        2.  Post-Record                        Block
                        3.  Post-Block                         Block
                        4.  Post-Form                          Form
                        5.  On-Rollback                        Form
                        6.  Pre-Logout                         Form
                        7.  On-Logout                          Form
                        8.  Post-Logout                        Form


**************
Next Field and
Previous field          1.  When-New-Item-Instance             Item


***************
Next Record and
Previous Record         1.  When-New-Record-Instance           Block
                        2.  When-New-Item-Instance             Item

**************
Next Block and
Previous Block          1.  Post-Text-Item                     Item
                        2.  Post-Record                        Block
                        3.  Post-Block                         Block
                        4.  When-Create-Record                 Block
                        5.  Pre-Block                          Block
                        6.  Pre-Record                         Block
                        7.  Pre-Text-Item                      Block
                        8.  When-New-Block-Instance            Block
                        9.  When-New-Record-Instance           Block
                        10. When-New-Item-Instance             Form


*******************
Records Are Queried     1.  Post-Query                         Block
                        2.  Post-Change                        Block
                        3.  Post-Change                        Item
                        4.  Post-Change                        Block
                        5.  Post-Change                        Block
                        Go back to Post-Query

NOTE: This cycle is repeated for each record retrieved.


**********************
No Records Are Queried  1.  When-New-Record-Instance           Block
                        2.  When-New-Item-Instance             Item

NOTE: To observe this Trigger Firing Order:
        a.  Enter a query.
        b.  Enter a nonexistent record.
        c.  Execute the query.

      The two triggers listed above, the Enter Query triggers, and
      the Execute Query triggers fire.


*************
Create Record           1.  Post-Change                         Block
                        2.  When-Validate-Item                  Block
                        3.  Post-Text-Item                      Block
                        4.  When-Validate-Record                Block
                        5.  Post-Record                         Block
                        6.  Post-Block                          Block
                        7.  On-Savepoint                        Form
                        8.  Pre-Commit                          Form
                        9.  Pre-Insert                          Block
                        10. On-Insert                           Form
                        11. Post-Insert                         Block
                        12. Post-Forms-Commit                   Form
                        13. On-Commit                           Form
                        14. Post-Database-Commit                Form
                        15. Pre-Block                           Block
                        16. Pre-Record                          Block
                        17. Pre-Text-Item                       Block
                        18. When-New-Item-Instance              Form


*************
Update Record           1.  When-Database-Record                Block
                        2.  Post-Change                         Block
                        3.  When-Validate-Item                  Block
                        4.  Post-Text-Item                      Block
                        5.  When-Validate-Record                Block
                        6.  Post-Record                         Block
                        7.  Post-Block                          Block
                        8.  On-Savepoint                        Form
                        9.  Pre-Commit                          Form
                        10. Pre-Update                          Block
                        11. On-Update                           Block
                        12. Post-Update                         Block
                        13. Post-Forms-Commit                   Form
                        14. On-Commit                           Form

                        Here the transaction is complete and one record added.

                        15. Post-Database-Commit                Form
                        16. Pre-Text-Item                       Block
                        17. When-New-Item-Instance              Form

NOTE: To observe this Trigger Firing Order:

        a.  Execute a query.
        b.  Change a value.
        c.  Choose Action->Save from the menu.
        d.  Record the triggers from that point.


*************
Delete Record           1.  On-Lock                             Block
                        2.  When-Remove-Record                  Block
                        3.  Post-Change                         Block
                        4.  Post-Change                         Block
                        5.  Post-Change                         Block
                        6.  Post-Change                         Block
                        7.  Post-Change                         Block
                        8.  Post-Change                         Block
                        9.  Post-Change                         Item
                        10. Post-Query                          Block
                        11. Post-Text-Item                      Block
                        12. Post-Record                         Block
                        13. Pre-Record                          Block
                        14. Pre-Text-Item                       Block
                        15. When-New-Record-Instance            Block
                        16. When-New-Item-Instance              Form

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