JSR352 (batch) section 11.6 Regular Chunk Processing

gistfile1.txt

1.
 <Create StepContext>
2.
 <Store step level properties in StepContext>
3.
 <->[StepListener.beforeStep...] // thread A
4.
 [<begin transaction> ]
5.
 <->ItemReader.open // thread A
6.
 <->ItemWriter.open // thread A
7.
 [<commit transaction> ]
8.
 // chunk processing:
9.
 <repeat until no more items> {
a. <begin checkpoint [<begin transaction> ]>
b. <repeat until commit criteria reached> {
i. <->ItemReader.readItem // thread A
ii. <->ItemProcessor.processItem // thread A
iii. <add item to buffer>
c. }
d. <->ItemWriter.writeItems // thread A
e. <->[ItemReader.checkpointInfo] // thread A
f. <->[ItemWriter.checkpointInfo] // thread A
g. <Store StepContext persistent area>
h.
i. <commit checkpoint (commit transaction)>
10.
 }
11.
 [<begin transaction> ]
12.
 <->ItemWriter.close // thread A
13.
 <->ItemReader.close // thread A
14.
 [<commit transaction> ]
15.
 <->[StepListener.afterStep...] // thread A
16.
 <Store StepContext persistent area>
17.
 <Destroy StepContext>