春季批处理

Question

When processing a step level using chunk processing(specifying a commit-interval) in Spring Batch,is there a way to know inside the Writer,when all the records in a file have been read and processed.My idea was to pass the collection of records read from the file to the ExecutionContext once all the records have been read.

Please help.

Answer 1

I don't know if the is one of pre-built CompletionPolicy that do what you want, but if none you can write a custom CompletionPolicy that mark a chunk as completed when writer return null ; in this way you hold all items read from file.
After that, are you sure this is exactly what you wnat? because store all item in ExecutionContext is not a good pratice; also you will lose chunk processing, restartability, and all other SB features...