On Oct 27, 2011, at 11:22 AM, Smith, Michael ERDC-CRREL-NH wrote:
> Punnet,
>
> What I do in the situations where I want to default to all or allow some
> filtered access is
>
> METADATA
> "default_classes" "1=1"
> END
>
> So the dummy condition is passed when no filter is specified.
>
>
>
Believe it or not, I thought up of the above solution myself but discarded it
because I understood the text in the documents to mean the following --
FILTER "class = '%class%'"
will be applied if a class is provided. However, if no class is provided, and
if the following is provided
METADATA
"default_class" "1=1"
END
Then the filter will become "class = '1=1'", which is, of course not correct.
And, I just checked the logs with the above mods, and my suspicion was proven
correct. My log file shows ms croaking with the following
select "class",encode(ST_AsBinary(ST_Force_2D("the_geoms"),'NDR'),'hex') as
geom,"gid" from table where the_geoms &&
GeomFromText('POLYGON((-180.150250417362 -90,-180.150250417362
90,180.150250417362 90,180.150250417362 -90,-180.150250417362 -90))',4326) and
(class = '1=1')
Obviously, I do not want "class = '1=1'"
>
>
>
> On 10/27/11 8:49 AM, "Puneet Kishor" <[email protected]> wrote:
>
>> the fine manual says http://mapserver.org/cgi/runsub.html
>>
>>> Since version 5.6, you can provide a default value for any substitution
>>> parameter, that will be applied if the parameter was not found in the
>>> url.
>>> You do this by providing special entries inside the layer metadata :
>>>
>>> METADATA
>>> 'default_sound' 'yes'
>>> 'default_nseats' '5'
>>> 'default_multimedia' 'yes'
>>> END
>>>
>>> In this example, the mapfile will be created as if the url contained
>>> ³&sound=yes&nseats=5&multimedia=yes²
>>
>>
>> Right then. Except, I want *all* my classes to be drawn if no class has
>> been provided. And, if one or more classes have been provided, then I
>> want only those to be drawn. So,
>>
>> http://server/mapfile?mode=map
>>
>> should return a map with all the 100+ classes in a layer. And
>>
>> http://server/mapfile?mode=map&classes=Foo,Bar
>>
>> (or some other variation of the above) should return a map with only the
>> requested classes in the layer. I can't think of anyway of doing the
>> above without resorting to scripting, and I still have had no luck with
>> WMS returned from Perl MapScripting.
>>
>> Suggestions.
>>
>> --
>> Puneet Kishor_______________________________________________
>> mapserver-users mailing list
>> [email protected]
>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>
_______________________________________________
mapserver-users mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/mapserver-users
