How to Obtain JobOperator in JBeret Batch Application

cfang Feb 20, 2019 6:57 PM

Recently a user reported problem with running JBeret-based batch application in WildFly:

The symptom is as follows, but it boils down how to get hold of JobOperator in order to perform various batch job operations:

JBERET000640: A BatchEnvironment implementation could not be found. Please ensure the SPI has been implemented and is on the class path

I think this issue has come up multiple times, and worth copying it here with a summary of solutions:

to access the standard API in javax.batch.operations.JobOperator, then call BatchRuntime.getJobOperator() to obtain JobOperator.
- this is the standard, portable API that works in all versions of JBeret, WildFly, JBoss EAP, or any other compatible JSR-352 implementations.
to access additional non-spec-defined API in JBeret's implementation of JobOperator, then use

AbstractJobOperator jobOperator = (AbstractJobOperator) JobOperatorContext.getJobOperatorContext().getJobOperator();

as demonstrated in JBeret test class AbstractIT.

this is JBeret-specific API and works in JBeret 1.3 or later, which is what the majority of JBeret users are using by now.

Hope this will help you better develop JBeret-based batch application. See the original jberet github issue #117 for complete details.