On Tue, Mar 26, 2013 at 9:35 AM, wwsmith <[email protected]> wrote: > Using GeoServer 2.1.4 I'm looking for the possibility to use (system) time > functions in SLDs. > > Concrete: we have layer stores with data sets containing a text time stamp > like '2010-03-01' or '2012/04/01'. Now the SLD should display all data which > are older than 2 years - looking at the actual date ... - in an other color > than the default color. > > Are there any suggestions?
There are no functions for date manipulation out of the box. However, it's not hard to implement them if you can develop in Java, the function subsystem is pluggable, new functions can be added in GeoServer by dropping in a custom jar in the right format. GeoTools has a tutorial on its plugin system that uses functions as an example... the example is quite a bit more complex than necessary, you actually just need to create the function and you can register it directly without having to also create a factory for it: http://docs.geotools.org/latest/userguide/tutorial/factory.html It's really just: 1) create the function, e.g. https://github.com/geotools/geotools/blob/master/modules/library/main/src/main/java/org/geotools/filter/function/string/ConcatenateFunction.java 2) register the function in SPI, eg.: https://github.com/geotools/geotools/blob/master/modules/library/main/src/main/resources/META-INF/services/org.opengis.filter.expression.Function#L168 You just create a jar with those two files, drop it in GeoServer, and you get the extra function available to SLD, WFS and so on Cheers Andrea -- == Our support, Your Success! Visit http://opensdi.geo-solutions.it for more information. == Ing. Andrea Aime @geowolf Technical Lead GeoSolutions S.A.S. Via Poggio alle Viti 1187 55054 Massarosa (LU) Italy phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 339 8844549 http://www.geo-solutions.it http://twitter.com/geosolutions_it ------------------------------------------------------- ------------------------------------------------------------------------------ Own the Future-Intel® Level Up Game Demo Contest 2013 Rise to greatness in Intel's independent game demo contest. Compete for recognition, cash, and the chance to get your game on Steam. $5K grand prize plus 10 genre and skill prizes. Submit your demo by 6/6/13. http://p.sf.net/sfu/intel_levelupd2d _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
