Caché ObjectScript Reference - InterSystems Documentation

Structured System VariablesValue01MeaningJob does not exist.Job exists.The following example tests for the existence of a Caché process.SET x=$JOBWRITE !,$DATA(^$JOB(x))The variable x is set to the job number of the current process (for example: 4294219937).The WRITE returns the boolean 1, indicating this process exists.As an Argument to $ORDER$ORDER(^$JOB(job_number),direction)^$JOB as an argument to $ORDER returns the next or previous ^$JOB job number in collatingsequence to the job number you specify. If no such job number exists as a ^$JOB node,$ORDER returns a null string.The direction argument specifies whether to return the next or the previous job number. Ifyou do not provide a direction argument, Caché returns the next job number in collatingsequence to the one you specify. For further details, refer to the $ORDER function.The following subroutine searches the Caché job table and stores the job numbers in a localarray named JOB.JOBSET PID=""FOR I=1:1 {SET PID=$ORDER(^$JOB(PID))QUIT:PID=""SET JOB(I)=PID}WRITE "Total Jobs in Job Table: ",IQUITAs an Argument to $QUERY$QUERY(^$JOB(job_number))^$JOB as an argument to $QUERY returns the next ^$JOB job number in collating sequenceto the job number you specify. If no such job number exists as a node in ^$JOB, $QUERYreturns a null string.The following example returns the first two jobs in the Caché job table. Note the use of theindirection operator (@):506 Caché ObjectScript Reference