[OpenLayers-Users] MapGuide overlay session ID requirements

[Kenneth Skovhede, GEOGRAF A/S]

As Zac notes, it depends on what you want.
If you want to use MapGuide tiles, turn layers on/off, use
selection, etc. you should use the MapGuide variant.

The MapGuide variant is also usable, without exposing the individual
layers as WMS, so a map setup is easier to make and maintain.

The synchronous call is not made with WMS.
A fix is done for MapGuide to remove this requirement, which
means that MapGuide 2.1 won't have this problem.

I have used the MapGuide layer in OL for quite some time,
and I have never had trouble with the call.

Regard,. Kenneth Skovhede, GEOGRAF A/S

Zac Spitzer skrev:
> depending on what your doing!
>
> wms ain't cached by mapguide whch s fine if your doing dynamic maps,
> but if you need
> to serve more than a few users, your gonna hit performance issues....
>
> I remember that Mr adair has patches in place for addressing some of that, have
> a look at the OL trac
>
> the session id stuff is only required for dynamic maps... which is
> useful when your
> doing funky stuff with the map, of course when your not, it's a big
> old pain in the butt,
> catch-22 yosarian....
>
> there's quite a case for a review of mapguide to make it more
> openlayers friendly,
>
> z
>
> On Sat, Jan 17, 2009 at 1:21 PM, gingerbbm <stuart.jones at jacobs.com> 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?
>> --
>> View this message in context: http://n2.nabble.com/MapGuide-overlay-session-ID-requirements-tp2169448p2171721.html
>> Sent from the OpenLayers Users mailing list archive at Nabble.com.
>>
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