Speaker: Hillmer Chona & Rodrigo Graciano

Twitter @HillmerCh and @RodgrigoGraciano

Link to table of contents

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Anotations vs XML

• @EnableBatchProcessing automatically provides beans for job repo, job launcher, etc
• If use XML, need to create all beans yourself
• Don’t mix and match XML vs annotations. Could wind up with two of a bean

Concepts

• Steps – one reader/writer
• Job repository – provided by framework
• async doesnt block – JobLauncher vs AsyncJobLauncher
• Can run at the comand line or in web container
• Processors – transform, filter, validate
• Chunk – collect data and sent data on when chunk complete
• Many types of readers, and writers built in. Can also write own
• Listeners run before/after job
• Step listeners are more detailed
• Fault tolerance – skip exceptions
• Retries

Flows

• Conditional – exit status, run different step on success/fail.
• Decider – can have custom logic, not just exit status ex: day of week)
• Split – run steps in paralelel

Live demo

• Heavy use of chaining
• Yay! Records
• JobExecutionListener has two methdods beforeJob() and afterJob(). Alternatively, an put logic in parent job

My take

The keynote ran late and I didn’t make it in tie for the beginning. Luckily, I saw Rodrigo do a practice run so was able to jump in. Lots of information and presentation well designed for explaining concepts