[OpenLayers-Users] WMC and multi-url in OpenLayers 2.7

[Andreas Hocevar]

Kralidis,Tom [Ontario] wrote:
> Correct, WMC 1.1.0 allows one Server element with one OnlineResource element.
>
> I'm not sure whether OL supports OWS Context, but there you can define multiple Servers, and / or multiple OnlineResource URLs within a Server element, to handle something like this.
>   

Currently OpenLayers does not support OWS context, because we are 
uncertain if its state. Tom, can you maybe enlighten us: Will OWS 
context become an OGC standard soon? Where can we find the current spec? 
Is the spec already stable?

Thanks a lot!
Andreas.

> ..Tom
>  
>
>   
>> -----Original Message-----
>> From: users-bounces at openlayers.org 
>> [mailto:users-bounces at openlayers.org] On Behalf Of Jacolin Yves
>> Sent: Thursday, 23 April 2009 05:33
>> To: Users at openlayers.org
>> Subject: Re: [OpenLayers-Users] WMC and multi-url in OpenLayers 2.7
>>
>> Hi Andreas,
>>
>> Thanks for your reply. Indeed it sounds normal among the WMC spec.
>>
>> Here is the tickets : http://trac.openlayers.org/ticket/2059
>>
>> I am not sure if I am able to provide a patch as I am not a 
>> javascript developer.
>>
>> Regards,
>>
>> Y.
>> Le Thursday 23 April 2009 11:11:40 Andreas Hocevar, vous avez écrit :
>>     
>>> Hi Yves,
>>>
>>> the problem is that there is no concept of multiple server 
>>>       
>> urls in WMC.
>>     
>>> If you look at the schema for WMC 1.1, you will see that the 
>>> ServerType in the Layer has exactly one occurrence, and the 
>>> OnlineResource inside the ServerType also has exactly one 
>>>       
>> occurrence.
>>     
>>> So the issue in Format.WMC.v1 is that the content of 
>>>       
>> layer.url will be 
>>     
>>> written to the OnlineResource's xlink attribute, which will 
>>>       
>> produce an 
>>     
>>> invalid value (comma-separated list of urls) if the layer's 
>>>       
>> url is an 
>>     
>>> array. The question is whether we just want to write the 
>>>       
>> first url, or 
>>     
>>> an additional vendor extension value that stores all other urls.
>>>
>>> Anyway, this deserves a ticket. Yves, if you are interested 
>>>       
>> in getting 
>>     
>>> this fixed, we would appreciate if you could create this ticket and 
>>> maybe even provide a patch.
>>>
>>> Regards,
>>> Andreas.
>>>
>>> Jacolin Yves wrote:
>>>       
>>>> Hello,
>>>>
>>>> I am using WMC OGC service to allow users to print my map with 
>>>> another design. Using multi-URL in OL give something like this in 
>>>> the WMC
>>>> context: <Layer queryable="0" hidden="1">
>>>>   <Server service="OGC:WMS" version="1.1.1">
>>>>     <OnlineResource xlink:type="simple"
>>>> xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="
>>>> http://www.lpdipro.dev.local/tilecache/tilecache.py,
>>>> http://www1.lpdipro.dev.local/tilecache/tilecache.py,
>>>> http://www2.lpdipro.dev.local/tilecache/tilecache.py,
>>>> http://www3.lpdipro.dev.local/tilecache/tilecache.py"/>
>>>>   </Server>
>>>>   <Name>ratp_ligne_metro</Name>
>>>>   <Title>ratp_ligne_metro</Title>
>>>>
>>>> I added space between each url to improve readability.
>>>>
>>>> In OL code, after applying the context, the url of tile are:
>>>> http://www.lpdipro.dev.local/tilecache/tilecache.py,
>>>> http://www1.lpdipro.dev.local/tilecache/tilecache.py,
>>>> http://www2.lpdipro.dev.local/tilecache/tilecache.py,
>>>> http://www3.lpdipro.dev.local/tilecache/tilecache.py?
>>>> VERSION=1.1.1&FORMAT=image%2Fjpeg&
>>>> LAYERS=cadastre&SERVICE=WMS&REQUEST=GetMap&
>>>> STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&
>>>>
>>>>         
>>> SRS=EPSG%3A900913&BBOX=89321.71190000002,6171789.4407,245864.74580000
>>>       
>>>> 003,
>>>> 6328332.4746& WIDTH=256&HEIGHT=256
>>>>
>>>> Again return line and space added for readability.
>>>>
>>>> Is it something known and how to correct this? Do I need 
>>>>         
>> to create a 
>>     
>>>> bug report, example?
>>>>
>>>> Thanks,
>>>>
>>>> Y.
>>>> PS : I am going to test the new OL 2.8RC1 release.
>>>>         
>>
>> --
>> Yves Jacolin
>>
>> Ne demandez pas si vous pouvez contribuer, contribuer ! :)
>> ---
>> http://softlibre.gloobe.org
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-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.