[mapserver-users] Querying map using CGI ...

[Steve Lime]

The CGI provides to results via templates. Templates operate on the
resultCacheMemberObj
contents and do a layer.getFeature behind the scenes. You need only
concern yourself
with the presentation piece. Through templates you can:

  - output, and to a certain extent format, attributes
  - output and format coordinates and bounding boxes
  - limit the number of features output
  - control output order of layers
  - define custom mime-types

RFC 36 is a good place to start for the newer template support. I think
I've posted a few
examples to the list as well.
(http://mapserver.org/development/rfc/ms-rfc-36.html)

Steve

>>> On 6/23/2009 at 9:42 AM, in message
<33fad6880906230742o2036ea6ctae3a3cc003145984 at mail.gmail.com>, Paul
james
<pauljame at gmail.com> wrote:
> Thanks Steve! Great explanation!
> But, in mapscript I got the querýs result getting
resultCacheMemberObj and
> layer.getFeature...
> How can I do something like that using cgi?
> 
> Paul
> 
> 
> On Mon, Jun 22, 2009 at 6:29 PM, Steve Lime
<Steve.Lime at dnr.state.mn.us>wrote:
> 
>> Querying is controlled via the mode parameter. Mode=query does a
point
>> query returning at most 1 result in one layer. Mode=nquery allows
you
>> to query multiple layers and return multiple results from either a
point or
>> a rect. MapServer looks at the various additional supplied
parameters to
>> decide whether to do a point or rect query.
>>
>> For example, this url will drop a point through all queryable layers
that
>> have status DEFAULT (since I'm not explicitly turning anything on)
>>
>> 
http://mapserv.org/cgi-bin/mapserv?map=foo.map&mapxy=x+y&mode=nquery

>>
>> and this will do a bbox query:
>>
>>
>> 
>
http://mapserv.org/cgi-bin/mapserv?map=foo.map&mapext=minx+miny+maxx+maxy&mode=n

> query
>>
>> You can turn layers on with the layer or layers parameters and can
restrict
>> queries to one layer (if necessary) using qlayer.
>>
>>  mode=query ~ queryByPoint with MS_SINGLE
>>  mode=nquery ~ queryByPoint with MS_MULTIPLE or queryByRect
>>
>> The qlayer parameter has the effect of running the query methods on
a
>> layerObj while without it you're running on the whole mapObj.
>>
>> Does this help?
>>
>> Steve
>>
>> >>> On 6/22/2009 at 4:02 PM, in message
>> <33fad6880906221402qde8375bj252c48b367d7eb4d at mail.gmail.com>, Paul
james
>> <pauljame at gmail.com> wrote:
>> > Hello guys, I pretty lost with CGI...
>> > Using mapscript, I can get query results with functions
queryByPoint and
>> > queryByRect...
>> > How can I do that in CGI mode?
>> >
>> > Thanks
>> >
>> > Paul
>>
>>