Thanks for the clarifying response. I'll look into providing a solution for this then.
Regards, Olle Den 11/22/11 9:08 PM skrev Andrea Aime <[email protected]>: >On Tue, Nov 22, 2011 at 2:39 PM, Olle Markljung ><[email protected]> wrote: >> Hello, >> I was wondering about the reason why null properties are returned in >>GeoJSON >> and not in the default GML response. >> In my case the difference in payload are significant. >> Also, if there is a very good reason for this, would it be possible to >>add a >> new format option (much like the callback option) that disables the >> generation of null properties in the response? >> The code I'm looking at is in >>org.geoserver.wfs.response.GeoJSONOutputFormat >> at row 195-198. > >The code was written a long time ago, so I'm not sure what the reasoning >was. >I can think of at least one good reason to have all the null values >specified, which is >the ability to determine the structure by looking at the first >feature: geojson is schemaless, >With this approach looking at the first feature you at least get to >know what the >attributes are without having to parse all the json, which is important >if you >are going to transform that json into something, like a shapefile or a >database, >that has a fixed structure (however one does not get the data type...). > >In any case, look at line 87-88, the code accesses the format_options >parameter >to determine wheter a json callback is required, or not. >You can do the same and add a new format option allowing the writer to >skip >the null values. Assuming you call the option "skipnulls" the wfs call >would then look like: >&request=GetFeature&typeName=whatever&format_options=skipnulls:true > >Cheers >Andrea > > >-- >------------------------------------------------------- >Ing. Andrea Aime >GeoSolutions S.A.S. >Tech lead > >Via Poggio alle Viti 1187 >55054 Massarosa (LU) >Italy > >phone: +39 0584 962313 >fax: +39 0584 962313 > >http://www.geo-solutions.it >http://geo-solutions.blogspot.com/ >http://www.youtube.com/user/GeoSolutionsIT >http://www.linkedin.com/in/andreaaime >http://twitter.com/geowolf > >------------------------------------------------------- ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ Geoserver-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-devel
