deadcode4j v2.0.0 is out! It is available via Maven central, so it is conveniently available for your Maven project.
What's new?
Although version 2.0.0 adds only a few frameworks to its feature list, e.g. Jetty XML configuration and Spring Data custom repositories, changes "under the hood" were massive and allowed to eliminate two of the most common reasons for false positives: type erasure and constants inlining. Additionally, the custom analyzers are now much more powerful: they now recognize transitive implementation of an interface or a superclass. To keep configuration slick, unnecessary configuration (like ignoring classes that don't even exist) is recognized by deadcode4j and is requested to be removed from the configuration.
All changes are listed in the change log.
Major Release: Usage Statistics
The major release is due to two changes: the deprecated goal find-without-packaging was removed; but most importantly, deadcode4j now requests your permission to send some usage statistics. Those usage statistics will help me understand usage scenarios, project sizes, configuration usage etc. - allowing to improve deadcode4j furthermore. Sending statistics is completely transparent; it is optional and can be skipped permanently or on a per-usage basis.
Do you have an opinion on usage statistics? Do you find it invasive, or do you appreciate my intentions to improve by gathering feedback?
How to use
It's so simple: go to the console, navigate to your Maven project, type
mvn de.is24.mavenplugins:deadcode4j-maven-plugin:find ‑Dmaven.test.skip=true
and see what it finds.
Hop on over to GitHub to learn more, browse the code, or contribute.
Looking for reference projects & users
Currently I'm using the big legacy application of my employer as a reference project. But I'm slowly running out of false positives, so my feature list is shrinking. That's why I'd love to analyze some more projects to get more feedback. So, if you know of an (open source) candidate I can analyze or if you are using deadcode4j for yourself and want something added or you have some nice ideas, please comment!
Here you can read how it all started.
Any way to use this with Ant? It looks very promising, but we're not ready to migrate to Maven yet.
ReplyDeleteThere's no "native" Ant support, nor do I have any plans to add such support - mainly due to the lack of a common project structure.
DeleteIt is certainly possible to integrate it by yourself, but you'd need to come up with substantiations for most of the de.is24.deadcode4j.plugin stuff (https://github.com/ImmobilienScout24/deadcode4j/tree/master/src/main/java/de/is24/deadcode4j/plugin).
Feel free to drop me a note via Hangout in case you want a kick-start ;)