Well, Ok … so as Sebastian has his objections against the changing it to anything below 17, I’ll change it to 17 tomorrow.
Chris Von: Christofer Dutz <[email protected]> Datum: Dienstag, 21. Oktober 2025 um 09:39 An: [email protected] <[email protected]> Betreff: Re: AW: [DISCUSS] Downgrade the Java version for only the plc4j-api module? Hi Sebastian, You do know that I'm only talking about the interfaces in the API module, the base exceptions in there? Not sure how big the burden is. I think it only has real code in one default driver manager. If he happy with 17, 11 would allow us to theoretically keep the old baseline. 8 was just a suggestion as the module would theoretically suport it. Chris Gesendet von Outlook für Android<https://aka.ms/AAb9ysg> ________________________________ From: Sebastian Rühl <[email protected]> Sent: Tuesday, October 21, 2025 9:24:21 AM To: [email protected] <[email protected]> Subject: Re: AW: [DISCUSS] Downgrade the Java version for only the plc4j-api module? I'm not sure if you are talking about the source version or the machine code version (or whatever that is called). I would object to put that to 8. Putting that to 17 should be fine for now if you need that, but I don't want to have that burden on 8 again for no reason at the moment. If the need for 8 comes up we could look at it. Sebastian On 2025/10/20 08:21:41 Christofer Dutz wrote: > Hi all, > > Given we haven’t changed anything since we went from 8 to 21 … I’d like to > make the API module Java 8 compatible. This way you could theoretically use > drivers using the PLC4X API down to Java 8, if you find someone willing to > provide drivers that go so low. > > So assuming you want to use drivers with a lower version PLC4J API won’t be > the limiting factor. You’d have to see how low the program you want to > integrate it into or the drivers you’re provided with will be able to go. > > I’ll wait another day or so, if I don’t hear anyone objecting, I’ll do the > change. > > Chris > > > Von: Lukas <[email protected]> > Datum: Samstag, 18. Oktober 2025 um 20:10 > An: [email protected] <[email protected]> > Betreff: Re: [DISCUSS] Downgrade the Java version for only the plc4j-api > module? > > +1 for setting plc4j-api to Java 17. As this is probably not the only > compatibility topic with existing solutions out there and we are aiming for > being able to connect to as many protocols or solutions as possible. To be as > open and connecting as we can without increasing our effort of development. > > Lukas > > Am 18. Oktober 2025 19:24:31 MESZ schrieb Christofer Dutz > <[email protected]>: > >Hi, > > > >As you all know, I’m working on new drivers. I also want to implement some > >commercial plugins. Now I’ve run into the case, where one of the runtimes > >I’m targeting is restricted to Java 17. > > > >The only module I am currently using from PLC4X in order to maintain API > >compatibility, ist the plc4j-api module. > > > >I think that simply setting the compile level of that one artifact would > >allow using other driver implementation with older Java version (We did say, > >that we will jump to Java 21 and if someone needs older drivers, he can find > >commercial support to help him with that … now by updating the API module to > >21 as well we sort of make that impossible. > > > >What do you think? Do we want to downgrade the java compiler version of the > >PLC4J-api module? We could probably even go back down to Jaca 8 with that. > > > >This would allow using „special drivers“ while staying API compatible. > > > >Chris >
