TRIGGER function

The TRIGGER function retrieves the event, subevent, or name of the object or analytic workspace that caused the execution of a trigger program (that is, a TRIGGER_DEFINE, TRIGGER_AFTER_UPDATE, or TRIGGER_BEFORE_UPDATE program, or any program identified as a trigger program using the TRIGGER command).

When the current program is a trigger program, the TRIGGER function returns the trigger information for that program. When it is not, the TRIGGER function returns trigger information for the most recently executed trigger program.

See also:

"Trigger Programs" and the TRIGGER command.

Return Values

TEXT

Syntax

TRIGGER (NAME | EVENT | SUBEVENT)

Parameters

NAME

For a program identified as a trigger program using the TRIGGER command, returns the object for which the trigger program is association. For a TRIGGER_AW, TRIGGER_DEFINE, TRIGGER_AFTER_UPDATE, or TRIGGER_BEFORE_UPDATE program, returns the name of the analytic workspace that caused the program to execute.

EVENT

Returns the name of the event (DML statement) that triggered the execution of the program.

AW
MAINTAIN
DELETE
DEFINE
PROPERTY
ASSIGN
BEFORE_UPDATE
AFTER_UPDATE

See also:

For more information on events, see"Trigger Programs" and TRIGGER command
SUBEVENT

When the value returned by EVENT is MAINTAIN, AFTER_UPDATE or BEFORE_UPDATE, returns more information on the OLAP DML statement that triggered the execution of the program. Valid subevents for AW are outlined in Table 8-18, "Subevents for the AW Event". Valid subevents for MAINTAIN are outlined in Table 8-19, "Subevents for the MAINTAIN Event". Valid subevents for UPDATE are outlined in Table 8-20, "Subevents for UPDATE Events".

Table 8-18 Subevents for the AW Event

Subevent Description

CREATE

Returned when an AW CREATE statement triggered the execution of the program.

ATTACH

Returned when an AW ATTACH statement triggered the execution of the program.

DELETE

Returned when an AW DELETE statement triggered the execution of the program.

DETACH

Returned when an AW DETACH statement triggered the execution of the program.

Table 8-19 Subevents for the MAINTAIN Event

Subevent Description

ADD

Returned when a MAINTAIN ADD statement triggered the execution of the program.

DELETE

Returned when any MAINTAIN DELETE statement except a MAINTAIN DELETE ALL statement triggered the execution of the program.

DELETE ALL

Returned when a MAINTAIN DELETE ALL statement triggered the execution of the program.

MERGE

Returned when a MAINTAIN MERGE statement triggered the execution of the program.

MOVE

Returned when a MAINTAIN MOVE statement triggered the execution of the program.

RENAME

Returned when a MAINTAIN RENAME statement triggered the execution of the program.

Table 8-20 Subevents for UPDATE Events

Subevent Description

AW

Returned when an UPDATE command triggered the execution of a TRIGGER_AFTER_UPDATE or TRIGGER_BEFORE_UPDATE program.

MULTI

Returned when an UPDATE command triggered the execution of a program identified as a trigger program using the TRIGGER command when an object is acquired in multiwriter mode.

Examples

For examples of using the TRIGGER function, see Example 6-3, "TRIGGER_BEFORE_UPDATE Program" and Example 10-166, "Assigning an Alternative Value using an Assign Trigger".