@cowtowncoder – Medium

May 6

Jackson 2.15 release: Overview

Now that Jackson 2.15 has been released (April 23, 2023) it is time for a quick overview what is included. Another “minor minor” release As with 2.14 what we have can be considered a “small” minor release, with few foundational changes. However the number of changes — almost 100 as per 2.15 Release Notes…

Java

9 min read

Java

9 min read

Apr 21

Jackson 2.15: faster floating-point writes, too

After writing my earlier post — “Jackson 2.15: faster floating-point reads” — I was reminded that it is not just reads: there has been support for faster writing of floating-point numbers too. This improvement was also include in Jackson 2.14 release, optionally enabled using matching feature JsonWriteFeature.USE_FAST_DOUBLE_WRITER. But as with…

Java

3 min read

Java

3 min read

Apr 10

Jackson 2.15: yet faster floating-point reads

One of new features included in Jackson 2.14 was StreamFeature.USE_FAST_DOUBLE_PARSER enabling of which makes parser use an alternative optimized decoding library (FastDoubleParser) to decode floating-point numbers from JSON (float, double, BigDecimal) — and other textual data formats (specifically CSV via jackson-dataformat-csv ). Upcoming Jackson 2.15 …

6 min read

Dec 2, 2022

Injecting project version into Quarkus service’s welcome page

I started using Quarkus web framework quite recently (this year) and so far like it a lot. A lot of stuff comes out of the box; performance is good; documentation excellent. And so on. What’s not to like? This includes generation of basic index.html to serve as the service welcome…

Java

1 min read

Java

1 min read

Aug 9, 2022

Jackson 2.14 sneak peek

It has been a while since Jackson 2.13 was released — about 9 months. Since then there has been steady progress, with about 50 fixes, improvements and new features (see in-progress 2.14 release notes for details). The plan is to get the first Release Candidate (2.14.0-rc1) out during August 2022. Let’s have…

Java

6 min read

Java

6 min read

Dec 31, 2021

Converting between java.util.UUID and byte[]

Using java-uuid-generator — UUIDs? Universally Unique IDentifiers (UUIDs) are standard identifiers commonly used in distributed systems where guaranteed item id uniqueness is needed. They are 128-bit long identifiers generated using one of couple of possible generation mechanisms. …

Java

3 min read

Java

3 min read

Dec 21, 2021

Close to completing 2021 Blog Quota

aka 24 for 21 — One of my New Year’s goals — not a public one, just personal — for 2021 was that I would write and publish at least TWO blog posts every single month. I am very close to achieving this goal: not counting this post (I could, but that’d be bit meta), I…

2 min read

Dec 19, 2021

Jackson is not affected by log4j/logback CVEs

(because it does not use either logging framework) — TL;DNR; Before explaining things in more details, I will make a simple statement: neither core Jackson library nor any of its FasterXML-maintained extension modules use either Log4j or Logback logging frameworks. …

Java

3 min read

Java

3 min read

Dec 1, 2021

Handling non-compliant JSON with Jackson

aka How to read Broken JSON with Jackson — author’s note: (paraphrasing Tolstoy) all compliant JSON looks alike; but all non-compliant content is broken in its own way. Background: why/whence invalid JSON? JSON format is rather simple as far as data formats go — just check out https://www.json.org/ for the original specification — and so it would make sense that everyone would simply…

Json

6 min read

Json

6 min read

Nov 24, 2021

Jackson API beyond ObjectMapper

aka ObjectReader/ObjectWriter, JsonMapper.builder FTW — “Classic” Jackson API w/ ObjectMapper The most often used class in the whole Jackson databind API is — without question — ObjectMapper. ObjectMapper has been around since Jackson 0.9.5 and has methods for reading and writing JSON (*), for converting structurally compatible values, and for configuring details of these operations. …

Java

5 min read

Java

5 min read