Andrea can chime in, but I think that many of the vendor options currently
implemented would not work well with functions evaluated per-feature. Env
is kind of a special case, most functions in SLD are meant to operate on
attributes of the data.
That said, I think the LabelCacheImpl in GeoTools would be the place to
start investigating if you want to add support for functions in
vendoroptions.
http://svn.osgeo.org/geotools/trunk/modules/library/render/src/main/java/org/geotools/renderer/label/LabelCacheImpl.java
Good luck :)
--
David Winslow
OpenGeo - http://opengeo.org/
On Fri, Nov 5, 2010 at 12:34 PM, Jeremy HANOUN
<[email protected]>wrote:
> Thank you David for your quick answer.
> Would be it be useful if I try to add it ?
>
> Regards,
>
> --
> Jérémy Hanoun
>
> De : David Winslow [mailto:[email protected]]
> Envoyé : Friday, November 05, 2010 5:29 PM
> À : Jeremy HANOUN
> Cc : [email protected]
> Objet : Re: [Geoserver-users] Parameter substitution in spaceAround
>
> Yes, this functionality is unavailable for vendoroptions (Functions in
> general do not work for vendor options). As a workaround, you could provide
> several variants of your style and refer to them by name, or use the
> SLD_BODY or SLD (url to an SLD) query parameters to provide dynamically
> generated SLDs from outside of GeoServer.
>
> --
> David Winslow
> OpenGeo - http://opengeo.org/
> On Fri, Nov 5, 2010 at 12:06 PM, Jeremy HANOUN <[email protected]>
> wrote:
> Hi Guys,
>
> I'm pretty new in GIS Area and already have a question.
>
> I'm currently testing the v2.0.2 of GeoServer and tried parameter
> substitution.
>
> I succeed to use it according to the documentation on some part like
> CssParameter in Font and Fill section, Radius in Halo section, but I failed
> using it in VendorOption section. I wanted to dynamically set the
> spaceAround parameter. Here follows significative parts of my SLD.
>
> [...]
> <TextSymbolizer>
> [...]
> <Font>
> <CssParameter name="font-family">
> <ogc:Function name="env">
> <ogc:Literal>TownNameFont1</ogc:Literal>
> <ogc:Literal>Arial</ogc:Literal>
> </ogc:Function>
> </CssParameter>
> <CssParameter name="font-size">
> <ogc:Function name="env">
> <ogc:Literal>TownNameSize1</ogc:Literal>
> <ogc:Literal>12</ogc:Literal>
> </ogc:Function>
> </CssParameter>
> <CssParameter name="font-style">normal</CssParameter>
> <CssParameter name="font-weight">normal</CssParameter>
> </Font>
> [...]
> <Halo>
> <Radius>
> <ogc:Literal>
> <ogc:Function name="env">
> <ogc:Literal>TownNameHaloSize1</ogc:Literal>
> <ogc:Literal>2</ogc:Literal>
> </ogc:Function>
> </ogc:Literal>
> </Radius>
> <Fill>
> <CssParameter name="fill">
> <ogc:Function name="env">
> <ogc:Literal>TownNameHaloFill1</ogc:Literal>
> <ogc:Literal>#FFFFFF</ogc:Literal>
> </ogc:Function>
> </CssParameter>
> </Fill>
> </Halo>
> <Fill>
> <CssParameter name="fill">
> <ogc:Function name="env">
> <ogc:Literal>TownNameFill1</ogc:Literal>
> <ogc:Literal>#000000</ogc:Literal>
> </ogc:Function>
> </CssParameter>
> </Fill>
> <Priority>
> <ogc:PropertyName>pop</ogc:PropertyName>
> </Priority>
> <VendorOption name="conflictResolution">true</VendorOption>
> <VendorOption name="spaceAround">
> <ogc:Function name="env">
> <ogc:Literal>TownNameSpaceAround1</ogc:Literal>
> <ogc:Literal>12</ogc:Literal>
> </ogc:Function>
> </VendorOption>
> </TextSymbolizer>
> [...]
>
> Is this functionality unavailable on VendorOption or am I doing something
> wrong ?
>
> Thanks in advance.
>
> Cheers,
>
> --
> Jérémy Hanoun
>
>
>
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