On 21 June 2013 14:04, Jonathan Moules
<[email protected]>wrote:
> In which case it's breaching this part of the spec:
>
>> A server shall throw an exception (code=StyleNotDefined) if an
>> unadvertised Style is requested.
>
> Because you can request an unadvertised style and no exception is thrown.
> You only get the exception if you request a non-existent style.
>
> Personally I prefer it the way it currently is - able to use any style
> that exists, even if they're not in GetCapabilities.
>
>
If you ask for a style that is not listed in the capabilities then it may
not match the layer you are using and could throw an error anyway.
Ian
>
> On 21 June 2013 14:02, Ian Turton <[email protected]> wrote:
>
>> You can't ask for styles that are not listed in the capabilities document
>> against that layer.
>>
>> Ian
>>
>>
>> On 21 June 2013 13:47, Maksim Sestic <[email protected]> wrote:
>>
>>> Hi Jonathan,****
>>>
>>> ** **
>>>
>>> To the end-user of the WMS, a LayerGroup is actually single layer, so in
>>> theory they should be able to specify a style when requesting it. However,
>>> I've just tested it and the *style is completely ignored.*****
>>>
>>> Strictly speaking this seems contrary to what the WMS spec says should
>>> happen.****
>>>
>>> ** **
>>>
>>> My thoughts exactly.****
>>>
>>> ** **
>>>
>>> Regards,****
>>>
>>> Maksim Sestic****
>>>
>>> ** **
>>>
>>> ** **
>>> ------------------------------
>>>
>>> *From:* Jonathan Moules [mailto:[email protected]]
>>> *Sent:* Friday, June 21, 2013 13:59
>>>
>>> *To:* Maksim Sestic
>>> *Cc:* [email protected]
>>> *Subject:* Re: [Geoserver-users] LayerGroup default style
>>> ****
>>>
>>> ** **
>>>
>>> Hi Maksim ****
>>>
>>> With regards to LayerGroup style – I guess it should have one in case
>>> Geoserver publishes it as a Single layer (?)... although a "shallow" one
>>> since setting SLD at root level should override containing layer styles.
>>> ****
>>>
>>> ** **
>>>
>>> That is something that I was scratching my head about reading the spec.
>>> It clearly says:****
>>>
>>> "Comma-separated list of one rendering style per requested layer."****
>>>
>>> ** **
>>>
>>> To the end-user of the WMS, a LayerGroup is actually single layer, so in
>>> theory they should be able to specify a style when requesting it. However,
>>> I've just tested it and the *style is completely ignored.*****
>>>
>>> ** **
>>>
>>> Strictly speaking this seems contrary to what the WMS spec says should
>>> happen.****
>>>
>>> ** **
>>>
>>> But for bonus fun, as you've discovered, if the style you specify
>>> doesn't exist, GeoServer will give you an exception. So LayerGroups seem to
>>> be the worst of both worlds:****
>>>
>>> - Include a non-existent style and it will error.****
>>>
>>> - Include a valid style and it will be ignored.****
>>>
>>> ** **
>>>
>>> To me the solution is actually for LayerGroups to completely ignore the
>>> style parameter, even if the given value is invalid. They're already
>>> breaking the spec, why not go one step further. :-)****
>>>
>>> ** **
>>>
>>> Of course, the solution for you is to fill in anything you want as the
>>> style, just make sure it exists. "line" "point" etc as the undeleatable
>>> GeoServer defaults would be good choices to use.****
>>>
>>> ** **
>>>
>>> Regards,****
>>>
>>> Jonathan****
>>>
>>> ** **
>>>
>>> On 21 June 2013 11:21, Maksim Sestic <[email protected]> wrote:****
>>>
>>> Hi Jonathan,****
>>>
>>> ****
>>>
>>> Yes, I agree, MapGuide is missing a point with "styles=default". Alas,
>>> this happens on both open source and commercial MG platforms I'm dealing
>>> with. This actually has to do with FDO provider for WMS (
>>> http://fdo.osgeo.org/) under the hood. I'm currently trying to figure
>>> out whether it's possible to override such beahviour using additional WMS
>>> parameters, but it's less likely.****
>>>
>>> ****
>>>
>>> With regards to LayerGroup style – I guess it should have one in case
>>> Geoserver publishes it as a Single layer (?)... although a "shallow" one
>>> since setting SLD at root level should override containing layer styles.
>>> ****
>>>
>>> ****
>>>
>>> Regards,****
>>>
>>> Maksim Sestic****
>>>
>>> ****
>>>
>>> ****
>>> ------------------------------
>>>
>>> *From:* Jonathan Moules [mailto:[email protected]]
>>> *Sent:* Friday, June 21, 2013 11:39
>>> *To:* Maksim Sestic
>>> *Cc:* [email protected]
>>> *Subject:* Re: [Geoserver-users] LayerGroup default style****
>>>
>>> ****
>>>
>>> Hi Maksim,****
>>>
>>> Several thoughts:****
>>>
>>> ****
>>>
>>> 1) MapGuide Server's behaviour seems odd. The WMS spec is very clear: if
>>> you ask for a style that doesn't exist then an exception *shall* be raised.
>>> So filling in "default" seems odd as there is no guarantee that a "default"
>>> will exist. Blank is the logical choice - the spec is clear:****
>>>
>>> "A client *may* request the default Style using a null value (as in
>>> "STYLES=")."****
>>>
>>> So even though it's a "may" not a "shall", MapGuide Server seems to be
>>> doing it wrong.****
>>>
>>> ****
>>>
>>> 2) Can't you use the "SLD" parameter to point to a "default" SLD of your
>>> own choosing?****
>>>
>>> ****
>>>
>>> 3) I don't think a LayerGroup can have a single style, although for
>>> scenarios like this I imagine it should be possible to, but then, how do
>>> you create a single SLD that encompasses all of the different components?
>>> ****
>>>
>>> ****
>>>
>>> Regards,****
>>>
>>> ****
>>>
>>> Jonathan****
>>>
>>> ****
>>>
>>> On 17 June 2013 16:25, Maksim Sestic <[email protected]> wrote:****
>>>
>>> Is it possible to name LayerGroup's "global" style somehow? There are
>>> applications (e.g. MapGuide Server) that require style name, and if not
>>> explicitly specified they query for "default" (thus "style=default" in
>>> URL
>>> params). Once GeoServer receives a query for LayerGroup's style named
>>> "default" it throws "ERROR [geoserver.ows] -
>>> org.geoserver.platform.ServiceException: No such style: default"
>>> exception.
>>>
>>> With kindest regards,
>>> Maksim Sestic
>>>
>>>
>>>
>>> --
>>> View this message in context:
>>> http://osgeo-org.1560.x6.nabble.com/LayerGroup-default-style-tp5060628.html
>>> Sent from the GeoServer - User mailing list archive at Nabble.com.
>>>
>>>
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>>>
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>>
>>
>> --
>> Ian Turton
>>
>
>
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