I think it is a good idea, but have not had time/budget to work on this myself.
Indeed I have had this draft email replying to you open for a month or so. I have been very focused on transitioning our build infrastructure, with some small development implementing mapbox style expression support :) Do you have any experience with Java? Or if there are any volunteers on this list interested it should be a combination of: 1) https://docs.geotools.org/latest/userguide/tutorial/function.html 2) A method similar to: public <T> T evaluate(Object object, Class<T> context) { Expression pointExpression = parameters.get(0); Geometry geometry = pointExpression.evaluate(object, Geometry.class); if( geometry == null) return geometry; Expression dimensionExpression = parameters.get(1); Integer dimension = dimensionExpression.evaluate(object, Integer.class); switch(dimension) { case 0: return toPuntal(geometry); case 1: return toLineal(geometry); case 2: return toPolygonal(geometry); default: throw IllegalArgumentException("Dimension "+dimension+" invalid (0,1 or 2 supported)"); } } 3) And then methods to collect each type, this could probably be done a bit more neatly return Geometry toPuntal(Geometry geometry){ if( geometry instanceof Puntal) return geometry; if( geometry instanceof GeometryCollection){ GeometryCollection collection = (GeometryCollection) geometry; ArrayList<Point> points = new ArrayList<>(); for (int i; i<collection.getNumGeometries(); i++){ Geometry g = collection.getGeometryN(geometry,i); Geometry = toPuntal(g); if( g instanceof Point) points.add( (Point) g ); else if( g instanceof MultiPoint) { MultiPoint pts = (MultiPoint) g; for (int j; j<pts.getNumGeometries(); j++){ points.add( (Point) pts.getGeometryN(j); } } } return geometryFactory().createMultiPoint(points.toArray(new Point[points.size()]); } return geometryFactory().createMultiPoint(); } On Wed, 23 Sep 2020 at 03:51, groznykh <groznykh....@gmail.com> wrote: > Hi Jody > > Is there a possibility that such functions would be realized? > > > > -- > Sent from: > http://osgeo-org.1560.x6.nabble.com/GeoServer-User-f3786390.html > > > _______________________________________________ > Geoserver-users mailing list > > Please make sure you read the following two resources before posting to > this list: > - Earning your support instead of buying it, but Ian Turton: > http://www.ianturton.com/talks/foss4g.html#/ > - The GeoServer user list posting guidelines: > http://geoserver.org/comm/userlist-guidelines.html > > If you want to request a feature or an improvement, also see this: > https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer > > > Geoserver-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geoserver-users >
_______________________________________________ Geoserver-users mailing list Please make sure you read the following two resources before posting to this list: - Earning your support instead of buying it, but Ian Turton: http://www.ianturton.com/talks/foss4g.html#/ - The GeoServer user list posting guidelines: http://geoserver.org/comm/userlist-guidelines.html If you want to request a feature or an improvement, also see this: https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users
