Spring Batch - abstract Step definition in Java configuration? - spring-batch

Question

My Spring Batch Job configuration has 5 steps, all of which are identical except for the reader. Is there a way I can abstract out all of the other parts of the step into a "parent" step, so that I don't need to repeat everything? I know this can be done in XML, but I can't figure out the java equivalent.
Here's one of the steps:
public Step quarterlyStep(FileIngestErrorListener listener, ItemReader<DistributionItem> quarterlyReader) {
return stepBuilderFactory.get("quarterlyStep")
.<DistributionItem,DistributionItem>chunk(10)
.reader(quarterlyReader) // The only thing that changes among 5 different steps
.listener(listener.asReadListener())
.processor(processor())
.listener(listener.asProcessListener())
.writer(writer())
.listener(listener.asWriteListener())
.faultTolerant()
.skip(ValidationException.class)
.skip(ExcelFileParseException.class)
.build();
}
Here's the definition of one of the readers:
#Bean
#JobScope
public PoiItemReader<DistributionItem> yearEndReader(#Value("#{jobExecutionContext['filename']}") String filename) {
PoiItemReader<PortfolioFundsDistributionItem> reader = new PoiItemReader<>();
reader.setLinesToSkip(1);
reader.setRowMapper(yearEndRowMapper());
reader.setResource(new FileSystemResource(filename));
return reader;
}

Answer 1

You can do something like:
private StepBuilderFactory stepBuilderFactory;
private SimpleStepBuilder<Integer, Integer> createBaseStep(String stepName) {
return stepBuilderFactory.get(stepName)
.<Integer, Integer>chunk(5)
.processor(itemProcessor())
.writer(itemWriter());
}
#Bean
public Step step1(ItemReader<Integer> itemReader) {
return createBaseStep("step1")
.reader(itemReader)
.build();
}
#Bean
public Step step2(ItemReader<Integer> itemReader) {
return createBaseStep("step2")
.reader(itemReader)
.build();
}