The GeoPackage class is an ad-hoc class to handle GeoPackages, it's low level and serves both the store and the coverage reader needs, besides being usable on its own. You are talking datastore level instead. An eventual datastore level API could be exposed, but it's a level of abstraction above the current conversation
Chers Andrea On Tue, Feb 11, 2020 at 6:39 PM Jody Garnett <jody.garn...@gmail.com> wrote: > We also talked about this previously, it would be nice to have a common > approach - for ShapefileDataStore to report an SLD sidecar file for example. > > On Tue, Feb 11, 2020 at 6:07 PM Ian Turton <ijtur...@gmail.com> wrote: > >> Subject to what Andrea says it sounds good to me (I think I'm the module >> maintainer but I could be wrong) - go for a PR and I'll try to review it >> and pitch in as I get time. >> >> Ian >> >> On Tue, 11 Feb 2020 at 17:03, Andrea Aime <andrea.a...@geo-solutions.it> >> wrote: >> >>> Hi, >>> just an observation, checking the geopackage extensions, I see one from >>> the GeoPackage spec author, called "Styling and symbology extension" >>> and another, probably the one you're talking about, called "QGIS Map >>> Styling Information". >>> See: https://www.geopackage.org/extensions.html >>> >>> They probably don't match, but if there is a single public GeoTools API >>> talking about gpkg styles, it should be able to eventually handle both. >>> I'm not saying that you have to implement them both, but a public API in >>> the GeoPackage classes should >>> be able to expose both transparently, or else be explicit and have a way >>> to extract QGIS styles and >>> "geopackage styles" in a separate way >>> >>> Cheers >>> Andrea >>> >>> >>> On Tue, Feb 11, 2020 at 5:53 PM Henning, Mark (Peraton) (US Person) via >>> GeoTools-Devel <geotools-devel@lists.sourceforge.net> wrote: >>> >>>> Good Morning, >>>> >>>> >>>> >>>> QGIS allows a layer’s style to be stored in a GeoPackage (or other >>>> database oriented solutions). It creates a table called layer_styles which >>>> contains metadata, the QGIS proprietary layer style information , but also >>>> a column which contains an SLD. >>>> >>>> >>>> >>>> I would like to add methods to the org.geotools.geopkg.GeoPackage class >>>> to be able to access this information. >>>> >>>> Looking at how the class is already designed, I would suggest the >>>> following >>>> >>>> >>>> >>>> A new class: StyleEntry (with appropriate getters) >>>> >>>> { >>>> >>>> Entry entry; // the entry to which the style belong >>>> >>>> String name; // the contents of the styleName column >>>> >>>> String description; // the contents of the description >>>> column >>>> >>>> } >>>> >>>> >>>> >>>> Then add the following methods to GeoPackage >>>> >>>> >>>> >>>> List<StyleEntry> layerStyles(); >>>> >>>> Style layerStyles(StyleEntry entry); >>>> >>>> >>>> >>>> Although I would like to support adding a layer style, the layer_styles >>>> table stores both the SLD and QML versions of the style description, and >>>> until the rest of GeoTools supports QML styles that would leave the >>>> database row created for the new storage inconsistent with rows created >>>> from QGIS. >>>> >>>> >>>> >>>> If there is another way to reasonably pull this information from a >>>> GeoPackage, I am open to other solutions. >>>> >>>> >>>> >>>> Would this added feature be amenable to the developer community? >>>> >>>> >>>> >>>> Very respectfully, >>>> >>>> >>>> >>>> *Mark Henning* >>>> >>>> Software Engineer, Technical Specialist >>>> >>>> Nuclear Science & Engineering >>>> >>>> Office: 719-599-1519 >>>> >>>> Cell: 612-703-8563 >>>> >>>> [image: cid:image001.png@01D3C5CF.995E1BA0] >>>> >>>> >>>> _______________________________________________ >>>> GeoTools-Devel mailing list >>>> GeoTools-Devel@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/geotools-devel >>>> >>> >>> >>> -- >>> >>> 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 >>> <https://www.google.com/maps/search/Via+di+Montramito+3%2FA%0D%0A55054++Massarosa?entry=gmail&source=g> >>> (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.* >>> _______________________________________________ >>> GeoTools-Devel mailing list >>> GeoTools-Devel@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/geotools-devel >>> >> >> >> -- >> Ian Turton >> _______________________________________________ >> GeoTools-Devel mailing list >> GeoTools-Devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/geotools-devel >> > -- > -- > Jody Garnett > -- 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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