Executing a Job from a Constraint

The only way to execute a job from a constraint is to call its job method.

Example

In this example, the SELECT command feeds two values (selected from columns ColumnA and ColumnB) to the job. The job needs to have a matching input parameter set that expects two values, maybe providing default values in case a value is not passed.

INVOKE        BatchRunner.JobX WITH
SELECT        ColumnA
,             ColumnB
FROM          Table1
WHERE         ColumnB = ColumnC
AND           ColumnD = 'N'

The following conditions apply to constraints that execute jobs:

•The job (and any subjobs of the job) cannot include action tasks.

•The job can only be used in an 'invocative' constraint, that is: only if the INVOKE command is at the topmost level of the constraint SQL.

The following special behavior applies when a job is called from a constraint:

•Any (pre)commit fired from the job will NOT be executed.

•Record-level commits for import/SQL tasks will NOT be executed.

•As of USoft 9.x, a batch job triggered from a constraint runs with background authorization.

It is possible to pass a literal as part of the INVOKE ... SELECT ... statement, for example:

INVOKE        BatchRunner.JobY WITH
SELECT        'P1' ColumnA
,             'Yes' "-quiet"
FROM          Table2
WHERE         Table2.ColumnE = 1