There is something in the FunctionFinder that will look for a function
implementation (along with the fallback value if you could not find
it).
- public Function findFunction(String name, List parameters, Literal fallback )
the method implemention ends with the following:
if( fallback != null ){
return new FallbackFunction( name, parameters, fallback );
}
else {
throw new RuntimeException("Unable to find function " + name);
}
Jody
On Fri, Mar 19, 2010 at 3:50 PM, Michael Bedward
<michael.bedw...@gmail.com> wrote:
> Hi all,
>
> I'm trying to implement the Interpolate function based on skeleton in
> the render module (thanks again Jody for pointing me to this).
>
> The SE 1.1 spec says that Interpolate can have a fallback value. The
> only way to create a function with a fallback in GeoTools seems to be
> to use FilterFactoryImpl directly and call a deprecated method...
>
> http://javadoc.geotools.fr/2.6/org/geotools/filter/FilterFactoryImpl.html#function(java.lang.String,%20java.util.List,%20org.opengis.filter.expression.Literal)
>
> This seems unsatisfactory. Am I missing something ? And does anyone
> know what "Pending see org.opengis.filter.Factory2" means ?
>
> Michael
>
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