Hi, I've just created a PR that opens an extension point in the GeoPackage module, allowing to register new GeoPackage extensions in it.
As context, GeoPackage has its own extension mechanism: https://www.geopackage.org/spec121/index.html#extension_mechanism There is a number of "built-in" extensions, whose name starts with "geopkg", the current code implements the "r-tree" one and "schema extension" for example: https://www.geopackage.org/spec121/index.html#registered_extensions Some of the extensions must be baked in, as it's otherwise impossible to interpret data, but many others deal with metadata type information, and are not necessary to understand the actual data. Given that many extensions are community <https://www.geopackage.org/extensions.html>, it's useful to have a way to implement them without having to add them into the GeoPackage module itself. Each GeoPackageExtension subclass provides method to make sense, read and manipulate the contents of the tables, that the particular extensions added to the GeoPackage. In particular, I'd be using this new extension point to allow the GeoServer geopkg wps process implementing the metadata, semantic annotation and portrayal extensions described here: http://docs.opengeospatial.org/dp/19-047.html Given they are not core, and they may still be changed, I feel it's best for them to stay in a community module for the time being. Cheers Andrea PS: Yes, this could be used as a base to implement a style extension. Yes, the portrayal extension is one particular implementation of a style extension, by the GeoPackage spec lead. No, it has nothing to do with the QGIS style one, in fact, it's quite different. No, I'm not gonna work on trying to harmonize them :-D == 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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