jackson

(note: follow-up to #2291 in which basic example added on README)

So: beyond initial simple Builder usage shown on README it would be nice to have more in-depth usage example(s).
This could be a wiki page on this repo or jackson-docs, or blog post to link to.

For purposes of Hacktoberfest whoever works on this could do PR for change in README to link to whatever resource gets added.

Jsoniter project (https://github.com/plokhotnyuk/jsoniter-scala) has many impressive performance optimizations; linked f.ex from here:

https://www.reddit.com/r/java/comments/darehu/jackson_release_210/f1ysf1e/

Of ones included, number-parsing would be relevant for this repo.

EDIT: also see (from the comment below)

"Unrelated to jsoniter but this recent port of Lemire's Double parser:

Look to apply-pr-label-locally.sh for inspiration on how to interact with the GitHub API easily.

• API docs
• gh api repos/guardrail-dev/guardrail/issues/1300/labels -X POST --input <( echo '["chore"]' ) <- POC for addi

Tools like jq are focused predominantly on their use on the command line, but have a lot of limitations (and bugs!) that jslt doesn't. This is a compliment to jslt btw. :)

To properly replace the usage of jq with jslt, we would like to be able to have some more flexibility with the ways of specifying the input parameters as well as the output.

• Specifying JSON input or JSLT transform input

InstantSerializer doesn't respect any of the following standard Jackson configuration settings:

ObjectMapper#setDateFormat
@JsonFormat(pattern) on an Instant
others?

Instead, I have to create and manually override the default InstantSerializer registered by the module.

This isn't well documented and is definitely confusing when using the library.
Can we make InstantSerializer

It would be nice to have a CSV feature similar to JSON feature JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS. Enabling of the feature by mapper.enable(JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS) doesn't work for CSV.

I want to write an object of this class:

data class TestData(
        val integer: Int,
        val float: Float
}

as
"1","1.234"
not as
1,1.234