Public access to AbstractItemCountingItemStreamItemReader.getCurrentItemCount [BATCH-1956]

[spring-projects-issues]

Jimmy Praet opened BATCH-1956 and commented

Can the getCurrentItemCount() in AbstractItemCountingItemStreamItemReader be made public? Currently the setter is public, but the getter is protected.

Ideally it would be in a new ItemCountAwareItemStreamReader interface, that way the method can also be called on job-scoped instances with the default JDK proxies instead of cglib.

My current use case for this is creating a SkippableItemReader that is capable of skipping records based on a specific configuration table that stores the record numbers to skip per job instance. At the moment I had to create a SkippableFlatFileItemReader and SkippableStaxEventItemReader (with duplicated code). I would prefer creating a SkippableItemReader that can delegate to any AbstractItemCountingItemStreamItemReader / ItemCountAwareItemStreamReader.

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No further details from BATCH-1956

[spring-projects-issues]

Michael Minella commented

For this type of functionality, we typically recommend using an ItemProcessor as a filter. Read in everything, and filter those items that are not to be updated out by returning null from the ItemProcessor.