Aaron Patula commented

I'm a new contributor and would like to work on this issue.

Mahmoud Ben Hassine commented

In general, a fixed-length file is often a line-ending not exist.

I'm not sure I understand this, do you mean the whole file is on a single line? Can you attach an example please?

Mahmoud Ben Hassine commented

Any update on this?

Hironobu Takahashi commented

do you mean the whole file is on a single line?

Yes. Examples are shown below.
(1 character = 1 byte)

Fixed-length file (Delimiter between records is number of bytes. 32 bytes = 1 record)

Sale012016 1   00000011000000000Sale022017 2   00000022000000000Sale032018 3   00000033000000000

Thanks for your update. Indeed, this type of files can be read using a custom BufferedReader. You are welcome to contribute if you want. You can get inspiration from the BinaryBufferedReader provided by Spring Batch or the FixedLengthBufferedReader from this example repo.

Hi @benas, can I look into this?

@parikshitdutta Sure! Anything without a PR is open for contribution, no need to ask. Thank you for all your contributions!

Hi @benas, I am thinking to expose FixedLengthBufferedReader through a factory, say FixedLengthBufferedReaderFactory. Do you see I am overdoing or that could lead to redundancy?

I see setter for few readers that accept BufferedReaderFactory as argument, with lambda things are different, without that having factory would be easy to inject and satisfy respective setters.

Your thought?

Please review the PR #3712, I will look forward to your feedback.

@parikshitdutta Thank you for your PR. To answer your question, I need to dig in in more details. However, this issue is not in our roadmap for now, we are focusing on the upcoming v4.3. I will let you know when we assign this issue to a release and start working on it. Thank you.

Hi @benas,
Now that we are moving into 5.x releases, just wanted to check with you and @mminella, if this can be useful feature for upcoming 5.x releases.

Thank you.

@parikshitdutta This is not critical, it could be addressed with a custom buffered reader as shown previously. Now adding this buffered reader as a built-in component in Spring Batch can be done in a minor version of the v5 line (5.1, 5.2, etc). For 5.0, we will be focusing on big changes that were not possible to introduce in minor versions of v4. We are currently working on our future release planning, so I will update this issue once it is assigned to a milestone. I just linked your PR to this issue.

Thanks @benas for detailed information, and linking the PR to respective issue.