[OSGeo-Discuss] Re: [Geowanking] Re: [OSGeo-Discuss] Input regarding Axis Order Confusion

[Markus Müller]

Hi Paul,

okay, I possibly wasn't precise enought. That is what I meant (and the 
SLD spec describes) - you can have a WMS that supports 
DescribeFeatureType without having a full WFS. A so called "integrated 
WMS" is exactly what you describe as "Capabilities and 
DescribeFeatureType only" mode. For such an integrated WMS (partial WFS) 
it is not necessary to support GetFeature. See page 12 of SLD 1.0.0 (OGC 
document 02-070).


regards

Markus


Paul Ramsey schrieb:
> 1.1.1.
>
> DescribeLayer->WFS->DescribeFeatureType only works if you have an 
> associated WFS. And since many publishers of WMS do so explicitly to 
> "keep their features internal while providing access to maps", it is 
> very very common for no parallel WFS instance to exist.  If WFS 
> supported a "Capabilities and DescribeFeatureType only" mode, it would 
> be possible to just have a "non-WFS WFS" as part of the WMS and make 
> this happen. But "GetFeature" is a mandatory operation for WFS, so 
> it's not.
>
> P
>
> On 17-Dec-06, at 10:53 PM, Markus Müller wrote:
>
>> Hi Paul,
>>
>> Paul Ramsey schrieb:
>>> Allan Doyle wrote:
>>>
>>>> There could always be a community (can you say "mass market"?) 
>>>> profile that takes 1.1.1 and lays the good parts of 1.3 on top.
>>>
>>> I'd be interested in forking WMS to add support for 
>>> DescribeFeatureType to it, so that arbitrary external styling was 
>>> possible. (My favourite ranting point.)  Also, selection.  10 years 
>>> later and we might achieve functional parity with ArcXML.
>> Are you proposing to extend WMS 1.1.1 or 1.3? In both cases I think 
>> it is not necessary.
>> SLD 1.0.0 defines the DescribeLayer operation for WMS 1.1.1 that 
>> allows you to find out which WFS (or WCS) serves the actual feature 
>> data. This WFS can then be queried with DescribeFeatureType.
>> SLD spec 1.1.0 will shortly become official, bringing back SLD 
>> functionality to WMS - including DescribeLayer.
>>
>>
>> regards
>>
>> Markus
>>>
>>> Also to extend the "geodetic exception for axis order" in WMS 1.1.1 
>>> to cover all geodetic systems, not just 4326.  (Which is practically 
>>> what folks do anyways, it's just not explicit in the document.)
>>>
>>> P.
>>>
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>>
>>
>> --Dr. Markus Müller
>> l a t / l o n  GmbH (Hamburg)
>> Gluckstr. 53a            22081 Hamburg, Germany
>> phone ++49 +177 2470742        fax ++49 +228 18496-29
>> http://www.lat-lon.de        http://www.deegree.org
>> -- 
>>
>>
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-- 
Dr. Markus Müller
l a t / l o n  GmbH (Hamburg)
Gluckstr. 53a			22081 Hamburg, Germany
phone ++49 +177 2470742		fax ++49 +228 18496-29
http://www.lat-lon.de		http://www.deegree.org
--