On 2013-06-21, at 7:04 AM, geoserver-users-request@lists.sourceforge.net wrote:
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1. Re: LayerGroup default style (Jonathan Moules)
----------------------------------------------------------------------
Message: 1
Date: Fri, 21 Jun 2013 14:04:23 +0100
From: Jonathan Moules <jonathanmoules@anonymised.com>
Subject: Re: [Geoserver-users] LayerGroup default style
To: Ian Turton <ijturton@anonymised.com>
Cc: Maksim Sestic <max@anonymised.com>, geoserver-users
<geoserver-users@lists.sourceforge.net>
Message-ID:
<CAA-xNcXy0WkMgNSmX_desADp5atW2wzRtYbE9Z2F2YB0QSW7OA@anonymised.com>
Content-Type: text/plain; charset="windows-1252"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.On 21 June 2013 14:02, Ian Turton <ijturton@anonymised.com> 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 <max@anonymised.com> 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:jonathanmoules@anonymised.com]
*Sent:* Friday, June 21, 2013 13:59*To:* Maksim Sestic
*Cc:* geoserver-users@lists.sourceforge.net
*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 <max@anonymised.com> 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:jonathanmoules@anonymised.com]
*Sent:* Friday, June 21, 2013 11:39
*To:* Maksim Sestic
*Cc:* geoserver-users@lists.sourceforge.net
*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 <max@anonymised.com> 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
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