Re: [Geotools-gt2-users] GeoTools 34.0 released for Java 17 with Eclipse ImageN processing engine

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So ideally we should fix the invalid definitions, and rename the files to
end with “imagen”.

If you make a PR I am willing to do a 0.9.1 relate; and Gabe offered to
make a geotools release on schedule next week.

- -
Jody Garnett

On Mon, Nov 3, 2025 at 11:12 PM Kalesse Sören <Soe...@dw...> wrote:

> Hi Andrea,
>
> That's exactly my point. I  do assume that it was not intended for these
> two to coexist, but it should just work fine because there are two
> different registries and the operations interfaces are different, so in
> theory these two do not collide at all. That gives all users a good
> "workaround" to live with until applications and libraries have succeeded
> to migrate.
>
> And that's also exactly where my PR comes in. The three mentioned ImageN
> libraries (and only those three!) contain ServiceLoader definitions that
> are wrong. The register the ImageN operations at the JAI registry. That
> leads to class cast exceptions (wrong interfaces). That's the point that
> must definitely be fixed whatsoever.
>
> Now that fixed, here arises the second aspect: Right now you cannot mix
> standard ImageN and ServiceLoader registration. ImageN does not support
> that. It will fail to initialize if one operation had already been
> registered by that other means. So you must decide: either support multiple
> ways of registration in the ImageN core or decide upon one and let it go.
>
> Therefore my PR removes the three ServiceLoader definitions: 1) because
> they were wrong and 2) because that is the least invasive fix to make
> ImageN initialize correctly. The PR#119 was tested locally running
> GeoServer 2.2.8.0 and another application that uses JAI and it worked just
> fine.
>
> I hope you can agree that this is a proper fix and should be part in one
> of the next releases. For us it is a show-stopper for upgrading to GT 33.x
> / GS 2.28.x.
>
> Thanks!
> Sören
>
> -----Ursprüngliche Nachricht-----
> Von: Andrea Aime <and...@ge...>
> Gesendet: Freitag, 31. Oktober 2025 15:25
> An: Kalesse Sören <ska...@ex...>
> Cc: GeoTools Users <geo...@li...>
> Betreff: Re: [Geotools-gt2-users] GeoTools 34.0 released for Java 17 with
> Eclipse ImageN processing engine
>
> Hi,
> I second what Jody said, there was no plan to make the coexist, it's an
> upgrade path.
> However... I believe that a coexistence could be possible, the java
> packages
> are different, so by having ImageN use a different file name for the
> registry files in META-INF,
> from registryFile.jai to registryFile.imagen, a coexistence might be
> possible, even if likely
> wasteful (two separate image processing caches in memory are not the
> greatest of ideas).
>
> A coexistence is just not in our plans, but since ImageN is not yet
> available as 1.0, if DWD wants
> to put the development effort to get it done, I would not be against it.
> I see this applicable to the GeoServer 3.0 series.
>
> I would recommend switching existing software to ImageN though, we
> prepared migration scripts
> that should help in the endeavor.
>
> Regards,
>
> Andrea Aime
>
>
>
>
> ==
>
>
> GeoServer Professional Services from the experts!
>
> Visit http://bit.ly/gs-services-us <http://bit.ly/gs-services-us>  for
> more information.
>
>
>
> ==
>
> Ing. Andrea Aime
> @geowolf
> Technical Lead
>
>
>
> GeoSolutions Group
> phone: +39 0584 962313
>
> fax:     +39 0584 1660272
>
> mob:   +39  339 8844549
>
>
> https://www.geosolutionsgroup.com/ <
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> On Thu, Oct 30, 2025 at 5:29 PM Kalesse Sören <Soe...@dw...
> <mailto:Soe...@dw...> > wrote:
>
>
>         Hi,
>
>         thanks for the new release! We have noticed a problem though, that
> deals with environments where GeoTools (and now ImageN) and JAI are used at
> the same time. I have documented the issue at
> https://github.com/eclipse-imagen/imagen/issues/118 <
> https://ofcsg2dvf1.dwd.de/fmlurlsvc/?fewReq=:B:JVs5MjYyOSV1PjEtMyVqZz4zMjkzMiVwamRtYnd2cWY+NDE1YDExNTs1ZjpnNTEwZzIyZmU7NmE7O2ZmZWFgYjJnMzA0NmY1NSV3PjI0NTI6MTM0OzolcmpnPjY6VUZSV3FGMzEyMTswLjY6VUZSV3FFMzEyMTswJXFgc3c+UGxmcWZtLUhib2ZwcGZDZ3RnLWdmJWA+NjEla2dvPjM=&url=https%3a%2f%2fgithub.com%2feclipse-imagen%2fimagen%2fissues%2f118>
> and there is a PR attached
> https://github.com/eclipse-imagen/imagen/pull/119 <
> https://ofcsg2dvf1.dwd.de/fmlurlsvc/?fewReq=:B:JVs5MjYyOSV1PjEtMyVqZz4zMjkzMiVwamRtYnd2cWY+ZmVgNDplZTRlYWY0NWUzZ2BlMjA3M2UzZTU1MGdmNjQ6Zzc1MGdnNyV3PjI0NTI6MTM0OzolcmpnPjY6VUZSV3FGMzEyMTswLjY6VUZSV3FFMzEyMTswJXFgc3c+UGxmcWZtLUhib2ZwcGZDZ3RnLWdmJWA+NjEla2dvPjM=&url=https%3a%2f%2fgithub.com%2feclipse-imagen%2fimagen%2fpull%2f119>
> .
>
>         I wonder if there's any chance the problem can be solved soon as
> it currently prevents us from upgrading to GeoServer 2.28.x.
>
>         Thanks and Best Regards
>         Sören
>
>         -----Ursprüngliche Nachricht-----
>         Von: Jody Garnett <jod...@gm... <mailto:
> jod...@gm...> >
>         Gesendet: Mittwoch, 22. Oktober 2025 20:57
>         An: GeoTools Users <geo...@li...
> <mailto:geo...@li...> >
>         Betreff: [Geotools-gt2-users] GeoTools 34.0 released for Java 17
> with Eclipse ImageN processing engine
>
>         The GeoTools team is pleased to announce the release <
> https://ofcsg2dvf1.dwd.de/fmlurlsvc/?fewReq=:B:JVE3PDg8Nyt7MD8jPStkaTA9PDc9PCt+ZGpjbHl4f2gwazk7bj5uNG8+Oj5saW5ub2s4NT5raW5paWg+bGw+bjs0OT41azw9PCt5MDw6Ozw8ODQ1OjsrfGRpMDg0QEc5bGFpPT85NDs4IDg0QEc5bGFoPT85NDs4K39ufXkwXmJof2hjI0ZsYWh+fmhNaXppI2loK24wNT0rZWlhMD0=&url=https%3a%2f%2fgeotoolsnews.blogspot.com%2f2025%2f10%2fgeotools-340-release.html>
> of the latest stable version of GeoTools 34.0 <
> https://ofcsg2dvf1.dwd.de/fmlurlsvc/?fewReq=:B:JVE3PDg8Nyt7MD8jPStkaTA9PDc9PCt+ZGpjbHl4f2gwbDU1azU5OWhpaT9sbG5rPTRuPmw9ND9rOWg7NGhuPDU9Oz88aWtsOit5MDw6Ozw8ODQ1OjsrfGRpMDg0QEc5bGFpPT85NDs4IDg0QEc5bGFoPT85NDs4K39ufXkwXmJof2hjI0ZsYWh+fmhNaXppI2loK24wOD8rZWlhMD0=&url=https%3a%2f%2fsourceforge.net%2fprojects%2fgeotools%2ffiles%2fGeoTools%252034%2520Releases%2f34.0%2f>
> . This release is available from the repo.osgeo.org <
> https://ofcsg2dvf1.dwd.de/fmlurlsvc/?fewReq=:B:JVs5MjYyOSV1PjEtMyVqZz4zMjkzMiVwamRtYnd2cWY+YGFhNzE3MmAxNDM1YmJlNjNhOzpiYTpiYjc6NGU6N2BiNTRiOjQyZiV3PjI0NTI6MTM0OzolcmpnPjY6VUZSV3FGMzEyMTswLjY6VUZSV3FFMzEyMTswJXFgc3c+UGxmcWZtLUhib2ZwcGZDZ3RnLWdmJWA+NjEla2dvPjM=&url=http%3a%2f%2frepo.osgeo.org>
> <
> https://ofcsg2dvf1.dwd.de/fmlurlsvc/?fewReq=:B:JVE3PDg8Nyt7MD8jPStkaTA9PDc9PCt+ZGpjbHl4f2gwbGw0Pms+O2g7NDs/aD84NT47PjloPj48O2g6PGw7OGxpbDg+aG44byt5MDw6Ozw8ODQ1OjsrfGRpMDg0QEc5bGFpPT85NDs4IDg0QEc5bGFoPT85NDs4K39ufXkwXmJof2hjI0ZsYWh+fmhNaXppI2loK24wOD8rZWlhMD0=&url=http%3a%2f%2frepo.osgeo.org>
> and is made in conjunction with ImageN 0.9.0, ImageIO-Ext 2.0.0,
> GeoWebCache 1.28.0, and GeoServer 2.28.0.
>
>         This is a major update:
>
>         *       The library now requires Java 17, ending support for Java
> 11
>
>         *       Upgrade from Java Advanced Imaging Library 1.1.3 to
> Eclipse ImageN 0.9.0.
>
>         *       Library now provides a maven bill-of-materials import for
> both library modules and third-party-dependences making it considerably
> easier for downstream projects to synchronize dependences when upgrading
> GeoTools
>
>         *       For more information please see upgrade instructions <
> https://ofcsg2dvf1.dwd.de/fmlurlsvc/?fewReq=:B:JVE3PDg8Nyt7MD8jPStkaTA9PDc9PCt+ZGpjbHl4f2gwNDk1bjo7P2s0bms0OTk9aTo+a287a2k8PzlvbjhuaTw9PjtoPj81NSt5MDw6Ozw8ODQ1OjsrfGRpMDg0QEc5bGFpPT85NDs4IDg0QEc5bGFoPT85NDs4K39ufXkwXmJof2hjI0ZsYWh+fmhNaXppI2loK24wOD8rZWlhMD0=&url=https%3a%2f%2fdocs.geotools.org%2fstable%2fuserguide%2fwelcome%2fupgrade.html>
> in the user manual
>
>         Thanks to Jody Garnett (GeoCat) for making this release, Gabriel
> Roldan (Camptocamp) for all the build improvements, and Andrea Aime
> (GeoServer) for working so hard on the Eclipse ImageN migration.
>
>         These major library updates were undertaken as part of the
> GeoServer 3 activities, and we would like to the crowdfunding sponsors
> their financial support.
>
>         _______________________________________________
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>         Geo...@li... <mailto:
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>
>
>
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Re: [Geotools-gt2-users] GeoTools 34.0 released for Java 17 with Eclipse ImageN processing engine

Toolkit for working with and mapping geospatial data

Re: [Geotools-gt2-users] GeoTools 34.0 released for Java 17 with Eclipse ImageN processing engine