Hi Andrea,
I'm still trying to figure out how to play with CQL filters to query by
attributes. I've found that Geoserver 2.1RC4 sould support ECQL filters but
the filter I'm building is not well interpreted.
what I'm doing is:
var filter = "ECQL.toFilter(isLike(strToLowerCase(LABEL), 'via passo%') ==
true)";
baseLyr.mergeNewParams({ 'cql_filter': filter });
it throuws an exception, like could not parse CQL filter list.
any idea?
thanks a lot
- Antonio
On Thu, Apr 14, 2011 at 10:54 PM, Andrea Aime
<[email protected]>wrote:
> On Wed, Apr 13, 2011 at 11:16 PM, Phil Scadden <[email protected]>wrote:
>
>>
>> > Using OL + WFS as Ricardo suggested is another option. It will give
>> > you more control,probably nice popup functionality and visual feedback
>> as you hover on the selection, but it won't scale up to large selections
>> (e.g., more than a few tens of features) whilst the approach I'm suggesting
>> above will be much more static but will scale up to whatever selection size
>> with no particular problems.
>> >
>> Andrea - the SLDSelect control in Openlayers more less implements what
>> you suggest.
>
>
> I see, good to know
>
>
>> This issue with it is that SLD filters are not honouring
>> the SRS of spatial geometry on geoserver (though they are honoured on
>> mapserver). If the spatial filter in the sld is in the same SRS as the
>> layer in geoserver, this mechanism scale fine.
>>
>>
> Yeah, in GeoServer we have to reproject the filters to the native SRS
> before
> they hit the data sources, since none of them is capable of handling
> filters in a srs other than the native one.
>
> In WFS we have good support for both parsing the srs and reprojecting the
> filter back to the native store srs, but in SLD handling we don't have
> anything
> like that.
> We'd need to check if the (old) SLD 1.0 parser is able to attach the srs
> information
> to geometries, if so adding filter reprojection would be possible using the
> same machinery used for WFS
>
> I'd suggest to add a request for improvement. If anybody feels like
> implementing
> this I can give directions on what code to touch.
>
> Cheers
> Andrea
>
> --
> -------------------------------------------------------
> Ing. Andrea Aime
> GeoSolutions S.A.S.
> Tech lead
>
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>
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>
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