Managing job dependencies

This recipe shows how simple, serial job dependencies can be managed using Talend.

Getting ready

Open the job jo_cook_ch11_0040_simpleSchedule.

How to do it…

1. Drag the job jo_cook_ch11_0040_task1 onto the canvas.
2. Drag the job jo_cook_ch11_0040_task2 onto the canvas, and link from task 1 using an OnSubjobOk trigger link.
3. Drag the job jo_cook_ch11_0040_task3 onto the canvas, and link from task 1 using an OnSubjobOk trigger link.
4. Your job should now look like the one in the next screenshot below:
   
5. Run the job to see the output of the three tasks.

How it works…

Dragging each of the jobs onto the canvas automatically creates a tRunjob component.

Each tRunjob is a subjob in its own right, so testing for onSubjobOk will result in the jobs executing serially, assuming that they all run without error.

There's more…

The following are some additional points to be noted regarding job dependencies.

Die on error

The tRunJob components will die if an error occurs, because...