[OpenLayers-Users] MapGuide overlay session ID requirements

[Mike Adair]

I'm not sure of the performance differences between between WMS and the 
MapGuide layer, but there is a patch available for the OL MapGuide layer 
that removes the asynchronous behaviour in the MapGuide Layer.  See: 
http://trac.openlayers.org/ticket/1756.  This is currently marked for 
review in the OL Trac system.  I'm not positive about the MGOS version 
numbers but I believe this works with MGOS2.0.2?

Mike


gingerbbm wrote:
> Brilliant. Thanks chaps :)
>
> The question now becomes: is there any preference between using
> OpenLayers.Layer.MapGuide and OpenLayers.Layer.WMS (which I've been using up
> until now)? The WMS is simpler to implement (no session ID required).
> Furthermore there's this warning from the MapGuide class's API
> documentation:
>
> "NOTE: untiled overlay layers issues a synchronous AJAX request before the
> image request can be issued so the users browser may lock up if the MG Web
> tier does not respond in a timely fashion."
>
> If the WMS call isn't synchronous (is it?), then there appears to be two
> good reasons to use it instead of the MapGuide class.
>
> Thoughts?
>   

-- 
   Michael Adair
   Senior Software Architect
   DM Solutions Group Inc.

   Office: (613) 565-5056 x26
   madair at dmsolutions.ca
   http://www.dmsolutions.ca
   http://research.dmsolutions.ca