[mapserver-users] NQuery problem

[Fawcett, David]

Subha, 

In taking a quick look at your layer, I think that you have a problem
with your data statement.  I am quite sure that if you want to use an
attribute(column) from your data layer for classification or query
results, you need to explicitly include the name of that column in the
select query that is in your data statement.  

David.

-----Original Message-----
From: mapserver-users-bounces at lists.osgeo.org
[mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Subha
Ramakrishnan
Sent: Friday, March 13, 2009 1:44 AM
To: Steve Lime
Cc: ruijgomes at gmail.com; mapserver-users at lists.osgeo.org
Subject: Re: [mapserver-users] NQuery problem


Hi

Here's how the layer looks in my mapfile:
layer
  name abc
  connectiontype postgis
  connection "user= user dbname=xyz host=localhost"
  type point
  tolerance 20
    group world
    dump true
    METADATA
       "wfs_title" "Factbook Metadata"
       "gml_include_items" "all"
       "wms_feature_info_mime_type" "text/html"
    END
    template "template.html"
    projection
      "init=epsg:4326"
    end
    transparency 65
    status on
  data "topology from tablename using unique id using SRID = -1"
  classitem "veg_class"
        class
                name "AGRICULTURE"
                expression "AGRICULTURE"
                style
                        symbol 'custom_icon'
                        size 20
                        color 179 189 209
                        outlinecolor 000 000 000
                end
        end
end

Status is on and template is defined.
Am i missing something else?

Thanks a lot for the help.

Subha
Steve Lime wrote:
> For a layer to be queryable you have to:
>
>   1 - either set Status DEFAULT, or explicitly turn it on (e.g.
layer=abc)
>   2 - define the layer TEMPLATE property
>
> Are those true?
>
> Steve
>
>   
>>>> Subha Ramakrishnan <subha at gslab.com> 03/13/09 12:38 AM >>>
>>>>         
> Hi,
>
> I am also facing a similar problem. It doesn't throw an error but it
> doesn't give me a result either.
>
> My url looks like this : 
> http://localhost/cgi-bin/mapserv?MAP=abc.map&MODE=nquery&LAYERS=abc&im
> gext=8920506.9477+3496535.4213+8954750.736418456+3530779.2100573704&im
> gbox=657+209+686+239&imgxy=670+230
>
> The extent given here is within  the map extent.
> Can you please tell me if there's some mistake here?
>
> Thanks a lot.
>
> Subha
>
> Steve Lime wrote:
>   
>> Nquery doesn't require qstring validation. What does your URL look 
>> like?
>>
>> Steve
>>
>>   
>>     
>>>>> Rui Gomes <ruijgomes at gmail.com> 03/12/09 9:42 PM >>>
>>>>>         
>>>>>           
>> I try to use the nquery function and i recived the follow error 
>> message:
>>
>> mapserv(): Web application error. Metadata qstring_validation_pattern

>> is not set.
>>
>> To avoid this i insert in the mapfile the follow lines inr the layer 
>> i want to query:
>>
>>
>> METADATA
>>           qstring_validation_pattern '.'
>> END
>>
>>
>> What this lines means. Why i have to put it?
>>
>> Thanks
>>   
>>     
>
>
>
>   

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