Kohei Nozaki's blog 

Environment

• jBeret 1.0.1Beta-SNAPSHOT
• WildFly 8.0.0.Final

Why need it?

• Logger injection through CDI is easy and useful, but for jBatch programming of some occasions, I guess that Job-wide Logger is better than typical class-wide logger. thus, I will try it this time.
• With CDI, we can reduce some annoying code, even related to Job Properties so I also will try to inject a job-level property to a Batchlet through Producer.

Sample project

• jBatch resources
  • jobwideproducer.xml
  • InjectBatchlet.java
• CDI resources
  • JobWideArtifactProducer.java
  • JobLogger.java
  • BaseDate.java
• Test class
  • JobWideProducerJobTest.java

How does it work?

• 2 Injections are declared in InjectBatchlet.
• Both of them will be produced by JobWideArtifactProducer.
• JobWideArtifactProducer creates:
  • a logger. the name contains job name.
  • a Date. it came from job-level property named “baseDate”.

Log

18:14:51,064 INFO  [job.jobwideproducer] (batch-batch - 3) process(): baseDate=14/02/25 0:00

Remarks

• Injection of variables such as working directory of the job may be useful too.

References

1. [Java] CDI - Slf4j Logger Producer
2. SimpleDateFormat (Java Platform SE 6)