Hey Justin,
Thanks for the reply. Do functions work for filter only or they can be used to
transform geometries too like in LineSymbolizer>Geometry ?
Btw, it's definitively something to look for, I'll give a try when I'll have
time, may be next week.
Cheers,
--
Jérémy Hanoun
De : Justin Deoliveira [mailto:[email protected]]
Envoyé : Thursday, November 25, 2010 4:34 PM
À : Jeremy HANOUN
Cc : Andrea Aime; [email protected]
Objet : *****SPAM***** Re: [Geoserver-users] How to add a function
Chiming in late... another way to add a simple filter function is the python
community module.
http://docs.geoserver.org/latest/en/user/community/python/hooks.html#filter
Only available on trunk, and probably a bit unstable at this point but
something to look for in the future. Or now for the brave :)
-Justin
On Tue, Nov 23, 2010 at 6:32 AM, Jeremy HANOUN
<[email protected]<mailto:[email protected]>> wrote:
-----Message d'origine-----
De : [email protected]<mailto:[email protected]>
[mailto:[email protected]<mailto:[email protected]>] De la part de
Andrea Aime
Envoyé : Tuesday, November 23, 2010 2:23 PM
À : Jeremy HANOUN
Cc :
[email protected]<mailto:[email protected]>
Objet : Re: [Geoserver-users] How to add a function
On Tue, Nov 23, 2010 at 2:08 PM, Jeremy HANOUN
<[email protected]<mailto:[email protected]>> wrote:
> -----Message d'origine-----
> De : [email protected]<mailto:[email protected]>
> [mailto:[email protected]<mailto:[email protected]>] De la part de
> Andrea Aime
> Envoyé : Tuesday, November 23, 2010 10:57 AM
> À : Jeremy HANOUN
> Cc :
> [email protected]<mailto:[email protected]>
> Objet : Re: [Geoserver-users] How to add a function
>
> On Tue, Nov 23, 2010 at 8:56 AM, Jeremy HANOUN
> <[email protected]<mailto:[email protected]>> wrote:
>> Guys,
>>
>>
>>
>> I may need your help on the following point.
>>
>>
>>
>> I need to add a function to apply on Geometry and wanted to know if this is
>> doable as a plugin.
>
> It is
>
>> If so, I'll be very pleased to have some information on how to do that.
>
> We don't have a guide but adding a function is easy enough that you can just
> see how it's done and replicate.
>
> Look at the GeoTools main module:
> http://svn.osgeo.org/geotools/trunk/modules/library/main/src/
> this is where most of the function code is:
> http://svn.osgeo.org/geotools/trunk/modules/library/main/src/main/java/org/geotools/filter/function/
> this is a simple date formatting function:
> http://svn.osgeo.org/geotools/trunk/modules/library/main/src/main/java/org/geotools/filter/function/FilterFunction_dateFormat.java
>
> To have them plug into GeoTools/GeoServer you also need to add a file
> in META-INF declaring the existance of the function,
> like this one:
> http://svn.osgeo.org/geotools/trunk/modules/library/main/src/main/resources/META-INF/services/org.opengis.filter.expression.Function
>
> Hi Andrea,
>
> Thanks for the answer.
>
> I think that i've missed something...
> I made a new project with the code for a class named FilterFunction_padding
> that extends FunctionExpressionImpl. The aim is to transform some geometries
> a little.
> My tree looks like :
> /src
> /perso
> /plugin
> /filter
> /function
> FilterFunction_padding.java
> /META-INF
> org.opengis.filter.expression.Function
Should have been /META-INF/services/org.opengis.filter.expression.Function
Look at the location of the geotools file:
http://svn.osgeo.org/geotools/trunk/modules/library/main/src/main/resources/META-INF/services/org.opengis.filter.expression.Function
Thanks again Andrea,
It worked, I sometime have my head in the clouds :)
I'll tell you more soon about this function (when I'll have remove the bugs), I
think this one could be helpful sometime and then I'll ask more questions on
how to contribute to those projects (geotools and geoserver).
Btw I finished the "parametric" functionality for the Env_Function.
Cheers,
--
Jeremy Hanoun
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Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.
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