Hi, as discussed in the last PMC/PSC meeting I'm looking into using -Xlint to find and remove deprecated API usage. With the compiler options "-Xlint:deprecation -Werror" the compile fails if any deprecated API is used. I've setup to use the compiler flag along with errorProne, so that a normal compile won't be immediately broken by deprecated API usage.
And then... I've started building it, and oh boy what I've found with just a handful of modules: - API deprecated because "in the future we might move it somewhere else", but with no replacement - API pointing at a replacement that is not functionally equivalent and cannot actually replace - API pointing at replacement stuff that's actually deprecated itself, and with no replacements - and so on... The moment I hit gt-main more than 100 warnings popped up and decided to stop for a bit, to send this mail, and possibly resume tomorrow. In the meantime, you can have a look here: https://github.com/geotools/geotools/pull/2309 So, in order to handle this "mess" I believe: - Some deprecated classes actually need to be undeprecated, e.g. FactoryUsingAnsiSQL, because the replacement is actually not finished or CollectionEvent because the suggested replacement cannot actually work with collections, requires a FeatureSource instead. - Some deprecated usage need to be ignored because they are testing the deprecated classes (which are not removed) - Other long deprecated classes/methods can actually be finally removed In terms of effect of a deprecation ban via QA build, there are positive effects: - The IDEs won't light up as much like christmas tree anymore - More critical thinking will be involved in deprecating APIs, and consideration for replacement mechanic, because one will have to either migrate away or suppress deprecation warnings And of course there will be downsides top, like upgrading a dependency will be harder, as it will come with association deprecation cleanup. So before I try to move forward, any objections? Cheers Andrea -- Regards, Andrea Aime == GeoServer Professional Services from the experts! Visit http://goo.gl/it488V for more information. == Ing. Andrea Aime @geowolf Technical Lead GeoSolutions S.A.S. Via di Montramito 3/A 55054 Massarosa (LU) phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 339 8844549 http://www.geo-solutions.it http://twitter.com/geosolutions_it ------------------------------------------------------- *Con riferimento alla normativa sul trattamento dei dati personali (Reg. UE 2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si precisa che ogni circostanza inerente alla presente email (il suo contenuto, gli eventuali allegati, etc.) è un dato la cui conoscenza è riservata al/i solo/i destinatario/i indicati dallo scrivente. Se il messaggio Le è giunto per errore, è tenuta/o a cancellarlo, ogni altra operazione è illecita. Le sarei comunque grato se potesse darmene notizia. This email is intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. We remind that - as provided by European Regulation 2016/679 “GDPR” - copying, dissemination or use of this e-mail or the information herein by anyone other than the intended recipient is prohibited. If you have received this email by mistake, please notify us immediately by telephone or e-mail.*
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