[OpenLayers-Users] openlayers,geoserver in external web app

[Tue Topholm]

What about the onImageLoadError, I don't know if it is deprecated…




Den 28/12/2012 kl. 14.59 skrev pierre de fermat <fermatslittletheorem at gmail.com>:

> It is slightly more complicated than that. For session related
> exceptions, i need to show a dialogue box and redirect to login page.
> For timeout errors, i can request a 'try again' message etc. There are
> also lots of application logic related exceptions that I need to
> handle.
> 
> Best
> Pierre
> 
> On 12/28/12, Tue Topholm <tt at sugee.dk> wrote:
>> Why not just return an image with the error in…..
>> Den 28/12/2012 kl. 11.41 skrev pierre de fermat
>> <fermatslittletheorem at gmail.com>:
>> 
>>> Thanks Tue. I managed to redirect it and it works. However, this approach
>>> cannot handle exceptions. When i fake the wms call, and if the struts
>>> layer encounters an exception (session related, db timeout etc) , I just
>>> end up with an empty image. I am not able to redirect such a request via
>>> struts.xml or any other means. The proxy method would also face similar
>>> issues.
>>> 
>>> Any thoughts?
>>> 
>>> Best
>>> Pierre
>>> 
>>> 
>>> On Thu, Dec 27, 2012 at 6:06 PM, Tue Topholm <tt at sugee.dk> wrote:
>>> That is the "normal" way to do it....
>>> 
>>> You also have the option to provide a proxy url that does exactly what you
>>> want.
>>> 
>>> 
>>> --
>>> 
>>> Med venlig hilsen / Kind regards
>>> 
>>> Tue Topholm
>>> Sugee
>>> Tlf: +45 32 13 32 32
>>> W: http://www.sugee.dk
>>> 
>>> 
>>> 2012/12/27 pierre de fermat <fermatslittletheorem at gmail.com>
>>> Hi
>>> I am creating a web app (dojo/struts/postgres/postgis) which amongst
>>> other things, need to deliver GIS capabilities.
>>> 
>>> The base infrastructure (security,logging,caching etc) is in place and
>>> other modules are under development. I took up openlayers as my
>>> frontend js for rendering maps from geoserver.
>>> 
>>> For other modules, the request (ajax and regular) goes through my
>>> struts filter layers -> action class->dao->db route. However,
>>> openlayer requires configuration of wms services URL (provided by the
>>> geoserver) . I can't direct those requests directly to geoserver. I
>>> need my app to trap requests do bunch of validations and then process
>>> it. I am sure any app developer would have gone through the same issue
>>> that i am facing right now.
>>> 
>>> i am thinking of 'tricking' openlayer by giving the URL of a struts
>>> action which captures the parameters from the request URL, and then
>>> requesting the geoserver internally for the response.This way i could
>>> manage session, security etc and keep geoserver internally facing. Is
>>> this recomendded? Is there a better way to make openlayer work with
>>> external web app?
>>> 
>>> Regards
>>> Pierre
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
>>> 
>>> 
>> 
>>