Re: [Geotools-devel] Complex features without application schemas: would it work?

[Tara Athan]

There is an open source package called trang that converts an xml document to an xml schema, among other things http://www.thaiopensource.com/relaxng/trang-manual.html#xml-input It is used by oXygen. Tara Gabriel Roldán wrote: Still I think it could be possible to grab a hand made FeatureType and derive its xsd, right? Even if it may break right now, it shouldn't be that complicated? What do you mean the encoder needs to know about substitution groups? can't it work if there are no substitution groups? The FeatureType itself would be in the _Feature subs group. What else is _needed_? Cheers, Gabriel On Wed, 2011-02-09 at 10:06 +0800, Ben Caradoc-Davies wrote: Andrea, there is no support for converting complex FeatureTypes into schemas. app-schema delivers schemas by returning a document that includes or imports the application schemas from their canonical location. The GML encoding requires a schema document to feed into EMF to configure the encoder. The EMF-parsed schema is smuggled via UserData on the FeatureType into the encoder. The encoder needs to know about things like substitution groups that do not exist in the GeoAPI model. Regards, Ben. On 09/02/11 01:27, Andrea Aime wrote: Hi, I'm asking to satisfy a curiosity. I know that complex feature people are all about interoperability with application schemas and the like, but only the cases demanding complex features I keep on stumbling on do not use/require published app schemas at all... I'm wondering, assuming I can make a data store that builds and describes complex features out of some native structure (might be javabeans for example) how would the rest of the code react? In particular, is there any support to encode a FeatureType into an XML schema like we do for simple features? And would the gml encoding for features work without having a published schema to target? Cheers Andrea -- Tara Athan Owner, Athan Ecological Reconciliation Services tara_athan at alt2is.com 707-272-2115 (cell, preferred) 707-485-1198 (office) 249 W. Gobbi St. #A Ukiah, CA 95482

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