[mapguide-users] MG 2.1 Beta and WMS / FDO Exception

[Crispin_at_1Spatial]

Update.

WMS is tricky but with an appropriate "config" file and coordinate system
overrides in place we have MapGuide 2.1 test instances reading from ArcGIS
(9.2 I think), Smallworld and MapServer WMS servers.

I *guess* that the "Invalid format for the EXCEPTION parameter" issue that
MG(FDO) throws is with the way that MG(FDO) forms the WMS URL - the client
(MG) should check the service capabilities for what types of exception are
supported - eg XML, TXT and request appropriately.  Otherwise some request
will fail but the exception type requested is not supported by the server. 
For example, the service that gave me issues had this in the capabilities
(though so did the valid ones!):

		<Exception>
			<Format>application/vnd.ogc.se_xml</Format>
			<Format>application/vnd.ogc.se_inimage</Format>
			<Format>application/vnd.ogc.se_blank</Format>
		</Exception>


I'm no reader of OGC/WMS documentation though and don't have fiddler set-up
to see the request that was being passed.  That would be a help.

Finally, setting a coordinate override on the WMS but then removing the
coordinate system from the .MapDefinition helped in at least one case
bizzarely.

We get WMS integration requests for about 25% of our installations now so
having a reliable automated config builder (Maestro?), coordinate
understanding and stable provider will become increasingly valuable as
knowledge and especially for newcomers.


Crispin_at_1Spatial wrote:
> 
> I have a WMS connection that runs OK on a MapGuide 2.0.2 server --
> verified today.  I have taken the same settings over to MG 2.1 and get an
> FDO error.
> 
> MapGuide Server (Version 2.1.0.3891)
> MapGuide Site Administrator (Version 2.1.0.3891)
> 
> An exception occurred in FDO component. InvalidFormat:
> msWMSLoadGetMapParams(): WMS server error. Invalid format for the
> EXCEPTION parameter.
> 
> This occurs when I preview my .FeatureSource (using Maestro) and then
> click the "View Data" to invoke the second panel in the DescribeSchema
> interface... of course I get no layers to display with the same message
> written to the log files.
> 
> Before I log a ticket for the regression I have a quick query on the
> format of the config file... as per the instructions at...
> https://trac.osgeo.org/fdo/wiki/FdoWmsNotes
> 
> I have the following line that references "OSGeo.WMS.3.1" -- is this
> correct for FDO 3.4 / MG 2.1?
> It is certainly OK for FDO 3.3 / MG 2.0.2.
> 
>   <SchemaMapping provider="OSGeo.WMS.3.1" name="WMS"
> xmlns="http://fdowms.osgeo.org/schemas">
> 
> Anyone got WMS running with MG 2.1?
> 
>  Thanks in advance - Crispin
> 
> 
> 

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