[OpenLayers-Dev] WFS without proxy

[Tim Schaub]

On 11/30/10 2:56 PM, Phil Scadden wrote:
>
>>
>> This is not particularly useful for cross-domain requests though -
>> unless the service returns JSON padded with a callback.
>>
>> E.g.
>>
>> http://demo.opengeo.org/geoserver/wfs?VERSION=1.1.0&REQUEST=GetFeature&TYPENAME=tiger:poi&MAXFEATURES=1&OUTPUTFORMAT=json&FORMAT_OPTIONS=callback:foo
>>
>>
>> Using syntax like the request above, you can dynamically inject
>> scripts into your page that load features cross-origin.
> That looks exceedingly useful to me! I use script injection a lot to get
> around local file restrictions in Chrome and cross-site access. How
> would go about building that into OL as alternative to POST for wfs
> getfeature queries?
>

One thing to note is that Internet Explorer's limitation of 2083 
character URLs will make this only practical if you are not issuing 
requests with large filters.

To implement something like this in OpenLayers, the HTTP related 
protocols could be given an option to do script injection instead of 
XHR.  A plain old Script protocol would be a nice clean alternative as well.

Tim

-- 
Tim Schaub
OpenGeo - http://opengeo.org
Expert service straight from the developers.