[OpenLayers-Users] the WMSGetFeatureInfo control, exceptions & infoFormats

[Andrew Bailey]

WMSGetFeatureInfo control & Exceptions.

If I use a Control.Click to build some GetFeatureInfo requests I can
define an Exceptions parameter as part of the request. I've noticed that
if I'm using the WMSGetFeatureInfo control then there is Exceptions
parameter to define. I'm wondering if this is something that's missing
from the control or it's handled deep within the library. Or as a
developer is it something to be worried about.

infoFormats.

To place this in context: I'm working on an OL application with a
collection of WMS layers of interest on top of some national base
mapping. We're dealing with probably about 40-50 WMS publishers who use
a good healthy mix of supported infoFormats :-/

We wish to implement an Info tool for all visible layers. The
WMSGetFeatureInfo control is rather attractive for us as it allows a
drillDown but I'm wondering if a more resilient approach would be to
capture the infoFormats when we do our initial getCapabilities (as part
of the GeoExt tree panel) and then build separate GetFeatureInfo
requests for each layer. That way we would at least be able to identify
which features come from which WMS layer. I've noticed that with the
drillDown/WMSGetFeatureInfo approach not all features are returning with
a type value. If two separate WMS layers are defined from the same WMS
then i can't distinguish between the two.

Your thoughts/code would be appreciated on either matter!
Andy