Hi Jody, that has not been a problem for years now, the output format fans
them out into one shapefile
per geometric type. The ticket is so old that I had troubles finding it,
and describes only part of what the
code can actually do (deal with incompatible geometry types too):
https://osgeo-org.atlassian.net/browse/GEOS-2201

See also the relevant test here:
https://github.com/geoserver/geoserver/blob/e325806e05134dc967985797a928c72b6881ca35/src/wfs/src/test/java/org/geoserver/wfs/response/ShapeZipTest.java#L204

Cheers
Andrea

Il gio 20 feb 2020, 23:39 Jody Garnett <[email protected]> ha scritto:

> Is the geometry column of a type supported by shapefile? Some systems
> (example oracle) can be configured to work with a generic geometry, and
> thus we do not know what kind of shapefile to create when being asked to
> save out a shapefile.
>
> Shapefiles must all be of the same type, rather than of mixed types.
> --
> Jody Garnett
>
>
> On Tue, 18 Feb 2020 at 20:08, Tobias Schulmann <[email protected]>
> wrote:
>
>> On Tue, 2020-02-18 at 11:07 +0100, Andrea Aime wrote:
>>
>> Can you share the full stack trace?
>>
>> Sure, here's the entire trace:
>> https://gist.github.com/GeoTob/e56dd23ee25438023d9424e4e1c3d04b
>>
>> Is the layer in question a simple feature one, and does it actually have
>> a geometry column?
>>
>> The layer does have a geometry column:
>> https://gist.github.com/GeoTob/5ef10644c0336cb686c3ac4e325afde3
>>
>>
>> Thanks for the help !
>>
>> Cheers
>> Andrea
>>
>> On Mon, Feb 17, 2020 at 11:33 PM Tobias Schulmann <[email protected]>
>> wrote:
>>
>> Hi
>>
>> When trying to generate shape-zip output for layers in PostGIS(JNDI) and
>> PostGIS stores, GeoServer reports the following error:
>>
>> java.io.IOException: java.io.IOException: Error in shapefile schema. It
>> is possible you don't have a geometry set in the output.
>> at
>> org.geotools.data.shapefile.ShapefileDumper.dump(ShapefileDumper.java:302)
>> at
>> org.geotools.data.shapefile.ShapefileDumper.dump(ShapefileDumper.java:215)
>>
>>
>> The documentation on SHAPE-ZIP
>> https://docs.geoserver.org/latest/en/user/services/wfs/outputformats.html#shapefile-output
>> doesn't seem to mention anything useful. Is this a configuration problem on
>> our end or an issue in GeoServer?
>>
>> Thanks
>> Tobias
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>> Please make sure you read the following two resources before posting to
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>> - 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
>>
>>
>> [email protected]
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>>
>>
>>
>> _______________________________________________
>> 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
>>
>>
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> _______________________________________________
> 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
>
>
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/geoserver-users
>
_______________________________________________
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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


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